User manual TRANSTEL GROUP LINE SENSOR VERSION 7.1 FOR ML500
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Manual abstract: user guide TRANSTEL GROUP LINE SENSOR VERSION 7.1 FOR ML500
Detailed instructions for use are in the User's Guide.
[. . . ] Version 7. 1 LS-U Line Sensor for the TransTel ML500 System
The TransTel Version 7. 1 LS-U Line Sensor offers several unique features when a Telco line is connected to the RJ11 Jack marked TELCO at the rear panel of the ML500 chassis. · · · · · · Automatic switching to cellular transmission within 5 to10 seconds if the telco line has been cut or tip-ring voltage is no longer present. [. . . ] In the telco mode of operation, it is possible to access the cellular mode by depressing the CELLULAR MODE button on the front panel of the transceiver module.
The Line Sensor module consists of a separate board. It can be accessed by extracting the transceiver module. However, prior to removal of the transceiver module, turn off the power supply and disconnect antenna and telephone cabling at the rear of the of the chassis. In addition, two captive black retaining screws (one in the extraction handle and one at the top of the module front panel) must be loosened. Exercise great care when extracting a transceiver module and avoid any damage to the components of the module. The Line Sensor board is located at the rear section of the module. Two switches (SW1 and SW2 on the left upper edge of the Line Sensor board) control settings for closure of the dry contacts on the rear panel of the chassis. Switch settings from 0 through 9 result in the following actions:
SWITCH SETTINGS SW2 (left switch) Duration in Increments of 0 or 2n-1 Hours 0 n=1 through 8: 1, 2, 4, 8, 16, 32, 64, or 128 hrs. n=9: indefinite number of hours or until ALARM RESET is pressed; (factory default). SW1 (right switch) Alarm Activation after n Minutes Any setting 0 (factory default) Switch settings 1 to 9 (n=1, 2, 4 , 8 , 16 , 32, 64 , 128 , or 255 minutes delay) ACTION IF TELCO LINE VOLTAGE IS LOST ACTION IF TELCO DIAL TONE IS LOST
No alarm contact closure Red ALARM LED on immediately for duration set with SW2. [. . . ] The contacts remain closed until the fault condition is corrected. The contacts open automatically (red ALARM LED off) when signal is again acquired or the fault condition has been corrected.
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