User manual PROFOTO ACUTE2 - OTHER MANUAL

Acute2 manual Profoto, Stockholm, Sweden. Warning Contents Profoto generators and lamp heads are parts of a complete professional lighting system. Please read the instruction manual carefully before use. Flash tubes and modelling lamps emit considerable heat and may cause injury if not handled properly. Note, always unplug the lamp cable from the generator before changing the modelling lamp or flash tube. · Under no circumstances are generators or heads to be opened. Hazardous voltage and energy are inside the generator. · Do not touch hot metal parts. · Do not obstruct ventilation. · Do not connect flash heads with the protective cap in place. When using the flash, do not place filters, diffusing materials, or any other obstructions directly onto the glass cover, flash tube or modelling lamp. Never position the light extremely close to people. When mounting umbrellas, do not touch the flash tube or modelling lamp with the metal shaft ­ risk of high voltage. Never connect accessories of other brands without consulting an authorised service station. Service only to be performed by an authorised repair station! Do not expose generators hand heads to moisture. Do not store the equipment in a cold car overnight (risk of condensation caused by temperature fluctation). Always use a grounded CPE mains outlet. Note! Under no circumstances is any part of the equipment to be opened! The equipment is not user-serviceable and there is dangerous high voltage inside! Thanks! . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 The Acute2 System Chart . . . . . . . . . . . . . . . . . . . . . . . 6 Acute/D4head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Acute/D4 twin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 The Flash heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Acute/D4 head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Acute/D4 twin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Acute/D4 ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Brief instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Energy distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Energy distribution Acute/D4 twin . . . . . . . . . . . . . . . . . 20 Energy control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Gas generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . . 26 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Acute 2R Radio Slave . . . . . . . . . . . . . . . . . . . . . . . . . . 28 The Acute2 system consists of the following products: Generators: Acute2 1200, Acute2 2400, Acute2R 1200, Acute2R 2400 Heads: Acute/D4head, Acute/D4 twin, Acute/D4 ring All Profoto reflectors and accessories fit the Acute2 system. 3 Thanks! Thanks for showing us your confidence by investing in an Acute2 system. For more than three decades we have sought the perfect light. What pushes us is the conviction that we can offer even the most demanding photographer yet better tools. Before our products are shipped we have them pass an extensive and strict testing program. We check that they pass the quality and capacity levels the most demanding photographers require. For this reason our flash equipment is the standard in most rental studios in New York and Tokyo and the most rented flash all over the world. The system consists of a variety of generators built and designed to meet the demands of the most demanding photographers on this planet. Yet the most important thing is the light you create and it is then essential that the system offers freedom to create your own light. The Acute/D4 head in particular offer you this possibility . The light source, both the flash tube and the modelling light, is placed high and free in the flash head. This makes it easier for you to adjust the light and use your creativity. The reflectors are moveable and lock easily into place. By moving the position of the reflector you can get a higher or lower concentration of light in the center or more of a flood light. This is not new, of course. Our flash heads have always been designed that way. What is new, however, is our new glass cover, which is designed to increase precision. The Acute/D4 head and the Acute/D4 twin are supplied with a frosted and UV-coated cover glass, which together with the flash tube, produce a colour temperature adapted to daylight colour film. There are glass covers with varying filtration, for greater diversity. The whole Acute2 system is modular. Every single reflector and accessory creates its special light and the unique Profoto focusing system offers you a possibility to create your own light with only a few different reflectors. "A photographer's tools are a natural part of the creative process. Like a painter's brush, an artist's chisel or a musician's instrument, their form and design should reflect their function, they should have the right feel, and they should be aesthetically pleasing". Profotos founders Eckhard Heine och Conny Dufgran, At "photokina",Cologne, Germany 1968 4 5 Acute 2 Acute2 1200 Acute2 2400 ProGas Power Cable Acute/D4 ring Acute2 Flash Extension Cable Acute/D4 head Acute/D4 twin Softlight Reflector Close-up Reflector Narrow Beam travel Reflector Narrow Beam travel Reflector Softlight Reflector Silver Softlight Reflector white ProGlobe w/clips Disc Reflector 7" Grid Reflector Barn Doors Honeycomb Grid Glass Kit ProGlobe w/Chimera Adapter Plate Magnum Reflector 7" Grid Telezoom Reflector Pro Tube Zoom Reflector Narrow Beam Reflector FilterHolder 40x40 cm 5,7 and 8 foot Reflector ProFocus ProFresnel Filter Cassette White Heat absorbing Iris filter Diaphragm 60x60 10° Honeycomb Grid BarnDoor Grid & Filter Holder The Acute2 series The system chart shows how the wide Profoto line of accessories fit together with generators and heads. Reflectors and heads can be combined in a number of varieties. The common denominator is the lamp head diameter, which is the base of the Profoto line of products. The lines indicate the possible combinations that Profoto equipment offers. ProBox Snoot 5°, 10° & 20° Grid Pattern Holder & Pin Set Slide holders 24x36 Barn Doors for ProFresnel Transparent Silver 6 7 Acute/D4 head Acute/D4 twin 1. UV reduced flash tube 2. Umbrella holder 3. Manoeuvre system with locking lever 4. Stand adapter 16mm (5/8") 5. Acute Glass Cover, frosted, UV-coated 6. Halogen modelling lamp, 250W, Mini-can E11 socket 7. Locking springs 8. Zoom reflector 9. Modelling light on/off 1. UV reduced flash tubes 2. Umbrella holder 3. Manoeuvre system with locking lever 4. Stand adapter 16mm (5/8") 5. Twin Glass Cover , frosted, UV-coated 6. Halogen modelling lamp, 500W, Mini-can E11 socket 7. Locking springs 8. Magnum Reflector 9. Modelling light on/off 1 6 1 5 6 5 7 7 9 3 9 3 2 8 4 2 8 4 8 9 The flash heads All Profoto lamp heads are designed for maximum light shaping purposes. The light source (both the flash tube and the modelling lamp) is mounted high and free in the flash head. This makes it easier for you to adjust the light and use your creativity. The flash head has a built in holder for the umbrella. The reflectors lock easily into place and by moving the reflector different types of light shaping is achieved. All Profoto reflectors and accessories fit the Acute/D4 head´s. A UV-reduced quartz flash tube is included with all Acute/D4 head´s. The flash tube has two metal pins. When removing a flash tube, pull it straight out of the sockets. When inserting a new flash tube, check that the trigger wire clasps properly around the flash tube (please see mounting instructions in package). In case the head overheats the modelling light automatically switches off. When the temperature has dropped sufficiently the modelling light will switch on again. Acute2 generators accept all Acute Alfa, Acute2 and the new Acute/D4 head and Acute/D4 twin. ATTENTION! Always control the model light via the head's dimmer if an Acute Alfa head is used and set the model light control of the Acute2 generator to "MAX". NOTE! Always unplug the lamp cable from the generator before changing modelling lamp or flash tube. Acute/D4 head The Acute/D4 head is fan cooled and it has an automatic voltage selector for the fan. The dimmer controlled modelling light is powered directly from the mains and it is therefore important to check that the rated voltage for the lamp corresponds with the mains supply. A 250 W E11 Mini-can halogen lamp is included in standard deliveries. The Acute/ D4head is supplied with a frosted UV-coated glass cover and a Zoom reflector. Combined with the UV-reducing quartz flash tube the frosted glass cover offers the recommended colour temperature for daylight type film. Distinctive colour temperature adjustments can be obtained by combining glass covers with different coatings. The following glass covers are available: 10 15 33 10 15 35 10 15 34 10 15 37 10 15 39 10 15 36 10 20 02 10 20 13 Glass Cover, frosted, UV-coated (standard) Glass Cover, frosted, extra UV-coated, -300°K Glass Cover, frosted, uncoated Glass Cover, clear, UV-coated Glass Cover, clear, extra UV-coated, -600°K Glass Cover, clear, uncoated 250W, 120V Halogen, Mini-Can 250W, 240V Halogen, Mini-Can 10 11 Acute/D4 twin The Acute/D4 twin is used to obtain even shorter flash duration, very quick recycling or to fire 4800 Ws out of one single head. An Acute/D4 twin has two flash tubes. As the flash duration is shorter at low power switch settings, and as only half of the desired power is used in each tube, consequently shorter flash duration is obtained. If you require shorter flash duration and you for example need 1200 Ws, you connect the Acute/D4 twin to the B sockets on the Acute2 1200 generator and fire 600 Ws from each tube. The flash duration is shorter than if a standard Acute/D4head is used. The flash duration at 1200 Ws with an Acute/D4 head is 1/560 while it is only 1/1000 with an Acute/D4 twin. If, on the contrary, you require faster recycling, you power the Acute/D4 twin with two Acute2 generators. The recycling is faster since each generator need to recharge less energy. To get 4800 Ws from one head you connect the Acute/D4 twin to two Acute2 2400 generators. Flash duration and recycling for an Acute/D4 twin at a certain power setting - for example 1200 Ws - compares with a Acute/D4 head powered with 600 Ws. Since the modelling light is powered from the mains supply it is important to check that the rated voltage for the modelling lamp corresponds with the mains supply. The modelling light is a 500W Halogen with a Mini-can socket (E11). The flash tube has two metal pins. When removing a flash tube, pull it straight out of the sockets. When inserting a new flash tube, check that the trigger wire clasps properly around the flash tube (please see mounting instructions in package). 10 15 18 10 15 19 10 15 20 10 15 21 10 20 07 10 20 15 Glass Cover, frosted, UV-coated (standard) Glass Cover, frosted, extra UV-coated, -300 gr K Glass Cover, frosted, uncoated Glass Cover, clear, UV-coated 500W, 120V, Halogen, Mini-can 500W, 240V, Halogen, Mini-can Acute/D4 ring The Acute/D4 ring is an entirely mobile source of light. The interior diameter of 100mm provides plenty of space for professional camera lenses. Since the camera holder can be tilted forward and backwards, as well as upwards and downwards, most cameras can be attached. The Acute/D4 ring gives a shadowless light and it makes an excellent source of light in cramped areas, such as the interior of an automobile. Many fashion photographers also use the Acute/D4 ring to find new angles and capture details. The ring flash provides a very distinct, directed light, but can be complemented by a soft light reflector, which increases the light source, thereby producing a soft light with little shadow. For close-ups, there is a reflector that focuses the light 50 cm in front of the camera lens. The maximum charge is 9600 Ws/minute. This means 4 flashes a minute at 2400 Ws, 8 flashes at 1200 Ws, 16 flashes at 600 Ws, etc. Changing flash tube is only to be done at a professional service station. Mounting the reflector: ·Remove the two ridged screws fixating the camera holder. ·Remove the four ridged nuts holding the outer and inner reflectors together. ·Run the lamp cable through the outer reflector and let the reflector slide into position. ·Reassemble the outer and inner reflectors using the ridge nuts. ·Reassemble the camera holder using the two ridged screws. 10 06 42 Softlight Reflector Ring 10 06 43 Close-Up Reflector Ring 12 13 Nomenclature 17. Flash head socket (group A) 1. Power On/Off 2. Modelling Light Dimmer for Group A 3. Modelling Light Dimmer for Group B 4. Modelling Light Control Max/Dim/Off 5. Ready Lamp & Test Button 6. Fast/Slow Recharging and Amp. draw Button 7. Voltage Selector Mains Supply 8. Mains Frequency Selector 9. Sound Switch 10. Slave (Photocell) Switch On/Off 11. Photocell and IR 12. A-Switch 13. A+B/A<->B Switch 14. B-switch 15. Bracket Dial 16. Sync Input 17 18 19 20 18. Mains connection 19. Flash head socket(group B) 20. Flash head socket(group B) Brief instructions · Check that the voltage you have selected on generator 1 2 3 4 5 corresponds with the mains supply voltage · Check that the modelling lamp has the correct voltage · Connect flash head/s · Connect the mains supply cable 6 7 8 9 10 11 · Choose recycling time · Switch on the POWER · Switch on modelling light (MOD. LIGHT) · Choose energy distribution 12 13 14 15 16 · Adjust the modelling light · Press the ready lamp/test button for flash · Connect sync cable 14 14 15 Warning! Never use ordinary household extension cords to extend the length of the power cable. They may overheat. Contact your Profoto distributor for proper equipment. Connecting lamp heads One, two or three lamp heads can be connected to the sockets marked A, B and B (15). When connecting the lamp plug, align the white dots on the plug with the white dot on the generator panel. Secure by turning the locking ring on the Energy distribution The energy can be controlled over a 6 f-stop range or 7 when using two heads connected to the B sockets. The energy output through the outlets A (17) and B (19,20) is controlled by the A+B / A<->B switch (13), the switch- (17) ( 19) (20) (12) (13) (14) (15) es A and B (12+14) and the dial BRACKET (15). The nominal energy of the flash unit is divided equally into two groups, A and B, and the two groups can either be combined or separated with the A+B / A<->B switch (13). The energy in group A is controlled by the A-switch (12) and the energy in group B is controlled by the B-switch (14). In each group the energy can be halved or quartered. Please see panel for details. Below you will find detailed description on how to control the energy if you use one, two or three AcuteHeads or if you use a AcuteTwin. Always start with settin g the BRACKET dial(15) to max, the A- and B switch at full and the A+B / A<->B switch (13) in position A+B. You now have maximum energy. Full f-stop changes are done with the A- or/and B-switch. Fine adjustments or further f-stop reductions are done with the BRACKET dial. 16 17 Energy distribution One head 1. Connect the head to socket A. 2. Reduce the energy one f-stop by switching A+B / A<- >B switch to position A<- >B. 3. Further reduce the energy one or two f-stops by halving or quartering the energy with the A-switch. 4. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. Two heads Symmetrical light distribution 1. Connect the two heads to the B sockets. 2. Reduce the energy one f-stop by switching A+B / A< -> B switch to position A<- >B. 3. Further reduce the energy one or two f-stops by halving or quartering the energy with the B-switch. 4. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. Asymmetrical light distribution 1. Connect one head to the A socket and one head to one of the B sockets. 2. Set the A+B / A <-> B switch in position A<->B. The energy for the two heads is now individually controlled. 3. Reduce the energy one or two f-stops by halving or quartering the energy with the A-switch for the head connected to the A-socket. 4. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. Three heads Symmetrical light distribution 1. Connect one head to each socket 2. Set the A+B / A< - >B switch in position A+B. The energy for the two groups is now added and then equally divided between the connected heads. 3. Reduce the light output by reducing the energy with A- and B- switch. 5. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. Asymmetrical light distribution 1. Connect one head to each socket 2. Set the A+B / A< - >B switch in position A< -> B. The energy for the two groups is now individually controlled. 3. Reduce the energy for the head connected to socket A by one or two f-stops by halving or quartering the energy with the A-switch. 4. Reduce the energy for the heads connected to sockets B by one or two f-stops by halving or quartering the energy with the B-switch. The energy in group B is equally divided between the two heads. 5. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. 18 19 Energy distribution Acute/D4 twin Energy Control One generator 1. Connect the head sockets to the two B sockets on the generator. 2. Reduce the energy one f-stop by switching A+B / A<->B switch to position A<->B. 3. Further reduce the energy one or two f-stops by halving or quartering the energy with the B-switch. 4. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops. With the dial BRACKET (15) the total energy can, irrespective of the energy distribution, be reduced to 1/4, i.e. two f-stops. The flash duration, recycling and colour temperature is affected by using the dial BRACKET. When using the bracketing dial (15) to reduce the energy you need to dump excess energy by pushing down the test button (5). To obtain the shortest possible flash duration use the position max and reduce energy by using the energy switches. Bracketing Two generators 1. Connect the head socket to socket A on each generator. 2. Reduce the energy one f-stop by switching A+B / A<-> B switch to position A< -> B on both generators. 3. Further reduce the energy one or two f-stops by halving or quartering the energy with the A-switch on both generators. 4. Use the dial BRACKET for fine adjustments and to further reduce the energy by two f-stops on both generators. The BRACKET DIAL can also be used to obtain alternative exposures - "bracketing". 1. Turn the dial to -1. Find your correct f-stop with your flash meter. Make the first exposure. 2. Turn the dial to max. The power increases to an over exposure of one f-stop . Make the second exposure. 3. Turn the dial to -2 energy. Press the test button (5). After recharging the power is decreased to an underexposure of one f-stop. 4. Now make the third exposure. This procedure results in three different exposures. One is "correct", one is overexposed by one f-stop and one is under exposed by one f-stop. There are three different exposures without any change in lighting or depth of field. It is of course possible to choose only1/4 or 1/2 of an f-stop "bracketing". The distance between marks is 1/4 of an f-stop. (5) (15) 20 21 The 5 metre sync cord can without restrictions be elongated Charging and recycling Check that the voltage selector (7) and the frequency selector (8) matches the mains supply voltage. Turn on the Sound signal The acoustic signal "beeps" when the unit is fully recycled. The signal can be turned on/off with the SOUND switch (9) Recycling Time With the button fast/slow (6) the recycling time can be adjusted to slow to preserve weak fuses or heavily loaded mains supplies. Slow recycling puts less pressure on fuses. Modelling Light Control With the mod. light switch (4) select the desired mode of operation if you want maximum mod. light , mod.light off or a possibility of dimming the mod. light in order to receive a proportional mod. light. To dim the dim. light use the Mod A(2) dial to control the head connected to group A(17) and the Mod B(3) dial for the head(s) connected to group B(19, 20). Automatic Safety Function If the unit is under intensive use with frequent flashing for an extreme long period of time, the recycling will stop completely. This is to prevent the unit from overheating and is indicated by a red light in the photocell(11) The overheat protection in the AcuteHead turns off the modelling light when the head is overheated. The protection functions are automatically reset when the temperature is lowered. Protection from wrongly set mains voltage selector switch inhibits charging for 5 seconds and shuts off if wrongly set. For quality reasons, the first charging cycle is longer than the following. with a sync extension cable. (9) (7) main switch POWER (1). The recycling time is very short. Variations may occur depending on the selected flash energy and the mains power supply. The shortest recycling time is obtained with low flash energy (6) (4) (8) (15) selected with the A-, B- and A+B / A<->B-switches and the BRACKET (15) dial. Flash duration The shortest flash duration is obtained by using an AcuteTwin connected to the B sockets, the BRACKET dial set to 1/1, the A+B/A<->B switch to the A<->B position and the B switch set at 1/4. (3) (11) Photo Cell The built-in photo cell (11) will sense flash release as well as IR-signals from most IR-transmitters. The photocell is turned off with the switch SLAVE (10). (2) (10) Ready lamp/test button (5) The ready lamp button TEST (5) has two functions. First, it lights up when the unit is fully recycled. Second, it can be used to manually sync the unit. When you have chosen a lower energy setting with the dial BRACKET (15), release a flash and the unit will recycle for the new energy setting. Connecting Camera and Flash meter Synchronise by connecting the sync cable from the camera or flash meter to the sync socket (16). (16) 22 23 Gas generator Warranty All Profoto products are guaranteed for a period of 2 years, with the exception of flash tubes, cables, glass covers and modelling lamps. Reliability Testing ­ The R-test The Profoto R-test guarantees that all products leaving the factory meet the very high standards required of professional equipment by professional photographers. The R-test is a rigorous performance test that Profoto generators are put through ­ 360 full power flashes are released during one hour, which is equivalent to 10 rolls of 35 mm film. After the test the equipment is examined to see that all parts have kept a normal operating temperature and are not malfunctioning in any way. All Profoto products are subjected to the R-test prior to being shipped. Most gas/petrol electric generators with an output of 2000W or more can operate one Acute2 generator. Please note that you must use a ProGas2 unit between the gas generator and each Acute2 generator to prevent damage to these two units if the gas generator operates at 190-240V. For more detailed information please see below or contact your local Profoto dealer. With a gas generator with an output of 3000W or more two Acute2 generators can be operated. A. Make sure the petrol-electric generator set produces at least 2000W continuous output power for each connected unit. Always check this figure against the data sheet, as the model number does not always reflect the true power output. NOTE: Generators less powerful than 2000W should never be used. B. Use one 'ProGas2' (order no. 10 02 17) for each connected Acute 2 flash unit, if a 19 0-240V petrol-electric generator set is being used. The 'ProGas2' is designed to protect your Acute2 flash unit from damaging voltage fluctuations, which may occur when a 190-240V petrol-electric generator set is used. The 'ProGas2' should be connected between the 190-240V petrol-electric generator set and the flash unit. NOTE: It is not necessary to use the 'ProGas2' with a 90-130V generator set. 24 25 Troubleshooting Guide Problem · No ready lamp but ready sound · No flash · Fuses keep blowing · Continuous red light in Photocell · Generator works badly or shuts off after a few seconds · Slow recharging /recycling · Flashing red light in Photocell · Bad mains quality? Action · Change ready lamp · Check flash tube · Reduce recycling speed · Generator is overheated · Check voltage settings on generator. · Low mains voltage? - Reduce the BRACKET(15) · Indicates slow recycling setting · Check setting of recycling time Technical data Guide no. in meter/feet at ISO 100/21° Acute2 1200 Magnum reflector 50° Zoom reflector Umbrella, white Power requirements · · · 90-130 VAC, 50 or 60 Hz. 15 Amps recommended for 2 units. 180-250 VAC, 50 or 60 Hz. 10 Amps recommended for 2 units. Gasoline generators, see guidelines on page 24 128/420 64/210 32,5/126 Acute2 2400 180/592 90/295 45,5/180 (minimum 2000W true output per flash unit). Charge speed set at Max. Flash duration, one head Technical data t0,5 Recycling time, sec Mains voltage 240V 50 Hz 100V 50 Hz 117V 60 Hz Acute2 1200 0.09-1.6 s 0.12-2.7 s 0.09-1.5 s Acute2 2400 0.18-3.2 s 0.24-5.1 s 0.17-2.9 s Energy [Ws] 4800 2400 1200 600 13x19x30cm (5.1x7.5x11.8in) 13x19x22cm (5.1x7.5x8.7in) incl. 300 150 75 5.9kg (12.9 lb) 4.1kg (9.0 lb) 37,5 Acute2 1200/2400 Acute/D4 head Acute2 1200 n/a n/a 560 1000 1800 3200 3200 3200 Acute2 2400 n/a 320 560 1000 1800 1800 1800 n/a Acute/D4 twin n/a /320 560 1000 1800 3200/1800 3200/1800 3200/1800 3200/ n/a Duration and recycling data are approximate and may differ slightly between units due to component variations Size (height x length x width) 2400Ws incl. Handle 1200Ws Handle Weight Acute2 2400Ws Acute2 1200Ws Max Modelling lamp 500W per head (1000W per generator at 90-130V) 26 27 Acute2R Radio Slave The Acute2R can learn multiple zones on a Quad-Triggering The Radio module built into the Acute2R pack is a learning PocketWizard Receiver. Channel and zone are set using a PocketWizard Transmitter. Please check that the generator and transmitter are using the same frequency (US version: 344MHz/CE version: 433 MHz). Example: the teaching Transmitter is set to channel 17 with NOTE! Please check if you're using a legal frequency before activating the transmitter in another country. To teach the Acute2R a receive Channel and Zone* follow these steps: 1. Select the desired channel and zone on a PocketWizard Transmitter. 2. Power off the Acute2R generator and wait 5 seconds. 3. Power on the generator. 4. Within 20 seconds, press and hold the PocketWizard Transmitter TEST button (up to 4 seconds) until flash triggers. If using a Sekonic meter with Radio module as a Transmitter, press the measure button repeatedly within the 30 second learning period until the flash triggers. If the Acute2R is not taught a receive channel within approximately 30 seconds of power on it will remember the previously taught channel. During the learning period the Acute2R will likely not respond to a Transmitter performing normal triggering on the previous channel. To trigger on the previous channel either teach the channel again following the procedure above or wait 30-40 seconds after power on then begin triggering. The Acute2R radio receiver is always in operation while the generator is powered on. It is possible to use the photo slave or a sync cord in addition to radio triggering Until the Acute2R is taught, it is possible for an inadvertent trigger from a second Transmitter to teach it the second Transmitter's channel and zone. While this is highly unlikely, 1 in 32 chance, and only during the 30 second learning period) it is still possible. zones A, B, and C selected. If the Acute2R is taught this combination it will trigger from any Transmitter set to channel 17 with zones A, B, or C selected. It will not trigger if only zone D is selected on the Transmitter. It will trigger if zones A and D are selected. To teach the Acute2R to trigger in only one zone make sure the teaching Transmitter has only one zone selected. channel (17 through 32). This provides the photographer with the convenience to activate or deactivate the flash unit(s) wirelessly in four separately controllable zones (ABCD) without leaving the camera position. For best radio operation do the following: 1. Keep power, sync, and lamp head cords away from the antenna. 2. Maintain line of sight between the Transmitter and Acute2R whenever possible (not necessary, but improves performance). 3. When hiding the generator from view try to not hide it behind or against metal or water filled objects as this affects radio range. Remember that people and trees are mostly water! 4. Keep the Transmitter's antenna parallel with the Acute2R's antenna. Do not attach metal objects to the antenna as an attempt to increase range. The Acute2R's antenna is a precision length to optimize range. Additional material may reduce range dramatically. Profoto AB Box 2023, SE 128 21 Skarpnäck, Sweden. Phone +46 (0)8-447 53 00, Fax +46 (0)8-447 53 20. Email info@profoto.se www.profoto.com Product codes, descriptions and included components may vary from market to market around the world. Please consult your local dealer or distributor for specific information. 33 40 06 / Photos: Jan Fridlund.