Ericsson LBI-39128 manual Adaptation from Old PMU

Power Sensor interface module connector marked “J1”, label the cable “J1” and disconnect it from the Power Sensor interface module.

11.If a cable (or an existing 19C852379G1 Channel Termination Board) is connected to the Power Sensor interface module connector marked “J2”, label the cable (or board) “J2” and disconnect it at the Power Sensor interface module.

12.Find the cables (or group of cables) connected to the Power Sensor interface module connectors marked “J6” and “J7”, determine which cable (or group of cables) goes to some point outside the cabinet, label this cable (or group of cables) “J9” (the connector number on the new Power Sensor interface module is different), and disconnect this cable (or group of cables) at the Power Sensor interface module.

13.Remove the old 19C852213G1 Power Sensor interface module and all cables still connected to it (all cables still connected to it should have been disconnected at their other end in step #5).

14.Mount the new 19C852632G1 Power Sensor interface module in the space vacated by the old module.

15.Connect the existing cables (or board) labeled “J1”, “J2”, and “J9” in steps 10-12 to the connectors marked “J1”, “J2”, and “J9” respectively on the new Power Sensor interface module.

16.Connect the 5 new 188D6466P2 cables from J3 through J7 on the new Power Sensor interface module to Port 1 through Port 5, respectively, on the back of the new PMU.

17.Connect the new 188D6466P1 cable from J8 on the new Power Sensor interface module to Port 7 on the back of the new PMU (skip Port 6).

18.Double check the installation using the interconnection diagram shown in Figure 11.

19.Set the power switch on the back of the PMU to the “Off” position.

20.Turn on the main 12V power supply for the cabinet.

C. Adaptation from Old PMU

Use this procedure only if your Site Controller cabinet doesn’t have EDACS Interface panels, but does have an old PMU.

Daisy Chain Cable to Power Sensors for Transmitter Channels 11 - 20 Antenna Power Sensor Cable to Power Sensors for Antennas 1 & 2 Daisy Chain Cable to Power Sensors for Transmitter Channels 1 - 12

19C852632G1 POWER SENSOR INTERFACE MODULE

POWER MONITOR UNIT

Figure 11 - Connections for Upgrade from Old PMU

This procedure consists of replacing the old PMU with the new PMU, adding an adapter cable between the existing transmitter power sensor cables and the new PMU, and adding an adapter cable between the existing antenna power sensor cable and the new PMU. The existing RS232 data link to the Site Controller computer and the two DC power wires can be re-connected directly to the new PMU. This procedure upgrades the system to the extent that it adds the new PMU, but uses adapter cables instead of upgrading to the EDACS Interface Panel configuration.

Parts Required

Before you start this procedure, be sure you have all the parts on hand. The parts for this procedure are shown in Table 4.

Table 4 - Parts for Adaptation from Old PMU