Installation and Operating Guide TransTel ML500 Introduction The ML500 houses either a DC or AC power supply and up to five transceiver modules in a compact 19-inch rack-mountable chassis. Each transceiver module is identified by a TransTel serial number and a Motorola ESN (electronic serial number). It is listed on the inside of each transceiver module, on the attached parts list, and on the packing list. The ESNs must be provided to the cellular carrier for assignment of the cellular telephone numbers. Installation The ML500 is shipped fully assembled and is ready for rack-mounting. The chassis can be mounted in a standard 19-inch wide rack. Mounting screws can be either 10-24x1 or 12-24x1. The mounting screws must be firmly tightened in order to secure the chassis to the rack. In the event that the above parts or packing lists are not available, this is a good time to record the ESNs from the serial number labels of each transceiver module. Make sure the power is off and remove any power, telephone, and antenna cables from rear of chassis. Then loosen the screws at the top of the face plate and at the bottom at each extractor handle and, using these handle, pull out the module far enough so that you can read the ESN on the serial number label attached to the transceiver housing of each module. Reinsert the modules and secure them by tightening the screws at the top of each module and in the extractor handles. Described below is an alternate method for obtaining a readout of the ESN on the display of the Motorola handset. If the chassis is not mounted in a rack, provide at least for a one-inch air space below the chassis. This air space is necessary for air-cooling of the power supply and transceiver modules. After mounting the chassis, follow the grounding practice used with your PBX or other switching equipment. If required, terminate an appropriate size ground wire at the stainless steel grounding screw on the rear panel of the chassis. Make sure the switch at the rear panel of the power supply is turned off and connect the supplied AC cord to a suitable 115 VAC outlet. Connect the cable of a suitable omnidirectional, directional, or patch antenna to the TNC connector at the rear panel of each transceiver module or the TNC connector of the MPLK PentaLink antenna combiner. MLINS80730 Page 1 of 4 Operating Guide ML500 Turn on the switch on the rear panel of power supply to activate AC power. The green POWER LED on the front panel of the power supply, the green SIGNAL LED, and the yellow CELLULAR LED will come on. If the TransTel Line Loss Sensor has been installed, the red ALARM LED may also be turned on. Programming The ML500 is designed to be easily programmed in USER MODE or TEST MODE with the provided Motorola cellular handset. Insert the RJ45 plug of the handset into the modular PROGRAM jack in the front panel of the module to be programmed. Depress the power key of the handset twice to activate the handset. Proceed with USER MODE programming as described in the enclosed Motorola NAM programming guide. To program the ML500 module in TEST MODE, proceed as follows: Power the module interface board down by depressing the power key of the handset. Move the switch above the PROGRAM jack from NORMAL to TEST. Power the handset up by depressing the power key of the handset again. Enter #55# on the handset key pad to start the programming process. Follow the Motorola instructions for test mode programming of Series IV transceivers. Pressing * after the final programming step will program the transceiver with the number assigned by the cellular carrier. Power the handset down by depressing the power key and move the slide switch from TEST to NORMAL. Power the handset up again by depressing the power key and disconnect the handset from the PROGRAM jack. Note: It is possible to obtain a readout of the ESN when the unit has been placed in test mode. Enter #38# and the display of the handset will two sets of two-digit numbers. The first two indicate the register or line number (00), the next two the first two digits of the ESN (e. g. C3). Depressing * on the handset advances to the next line (01) and the next two digits of the ESN. Depress * until you have recorded the ESN. To exit this mode, power the handset down as described above under test mode programming. Antenna Alignment The test mode feature of the ML500 is also useful for positioning the cellular antenna for achieve maximum signal strength. The Motorola cellular handset must be plugged into the PROGRAM jack on the front panel of the ML500 module to do this. MLINS80730 Page 2 of 4 Operating Guide ML500 Place the module in test mode by depressing the power key of the handset such that it is turned on and then turned off again. Move the slide switch from NORMAL to TEST and turn the handset on again. Several sets of alternating numbers will be displayed on the display of the handset. The last three digits of a six-digit display indicate signal strength. These numbers which may range from 000 to as high as 250 are relative RSSI (received signal strength indication) numbers and can be calibrated if an appropriate dBm test meter is available. For acceptable transmission quality, the RSSI should indicate a value of 80 or more. To check for proper antenna position, move the antenna and check the readout. As the signal improves, the RSSI numbers will increase. When using a directional antenna such as a Yagi or log periodic dipole array, rotate the antenna in 15-degree increments, pause to allow for the signal to stabilize, and check the readout. After a full circle is completed, note the optimum antenna position. Depress the power key on the handset, move the slide switch from TEST to NORMAL and turn the handset on again by depressing the power key. Unplug the handset from the PROGRAM jack and proceed to the next step. Signal Indication Your ML500 modules are equipped with a circuit that monitors the cellular signal. If the signal is too low for acceptable transmission over the cellular network, the green SIGNAL LED will be turned off. After a few seconds, the red ALARM LED will come on. At the same time, a relay closes a pair of dry contacts in the terminal block on the right rear side (as viewed from the front) of the armor plate of the ML500 chassis. These contacts can be used to connect an alarm system (not provided by TransTel) to alert the user when the cellular signal is unacceptable or the antenna has been disconnected. When the signal returns to an acceptable level, the red ALARM LED will be turned off and the the dry contacts in the terminal block on the rear of the chassis are opened. Operation without Line Sensor In this mode, the yellow LED marked CELLULAR and the green LED marked SIGNAL will be illuminated. The green TELCO LED, the red FAULT LED, and the ALARM RESET and CELLULAR MODE push button switches are not operable. You are now ready to connect the RJ11 plug of a standard telephone, modem, or other peripheral device to the RJ11 jack marked PBX/PHONE. MLINS80730 Page 3 of 4 Operating Guide ML500 Operation with installed Line Sensor If your ML500 is equipped with the TransTel Line Sensor, connect the telco line to the RJ11 jack marked TELCO. If a telco line is connected, the transceiver module will default to this line and the green TELCO LED will be illuminated. When the telco line is cut or disconnected, the Line Sensor will switch the module to the cellular mode of operation within five to ten seconds depending on the impedance of the peripheral equipment. In this mode, the yellow LED marked CELLULAR and the ALARM LED are illuminated. Pushing the ALARM RESET button will turn off the ALARM LED. If use of the telco line is restored or if the telco line is connected again, the Line Sensor will switch the module to the telco line mode of operation within five seconds. However, the Line Sensor will not interrupt a call in progress or switch if the cellular line is off-hook. In the telco mode of operation, the Line Sensor will switch to the cellular mode of operation if the cellular number of the module is called. This allows for the convenient check-out of the cellular operating mode. The switch-over is only for the duration of the call and will not occur if a call on the telco line is in progress. The module can also be forced to switch to the cellular operating mode from the telco mode by depressing the CELLULAR MODE switch. The module will stay in this operating mode for at least one minute or for the duration of the cellular call even if it exceeds one minute. Additional operating modes for the Line Sensor are described in a separate document that is attached to the ML500 instructions when a Line Sensor is purchased by the customer. For additional questions concerning the operation of the ML500 contact TransTel. All rights reserved. TransTel Group, Inc. 5555 Oakbrook Parkway, Suite 110 Norcross, Georgia 30093 Tel.: (404) 368-8343 Fax: (404) 368-8382 MLINS80730 Page 4 of 4 ...