Motorola SG4-DRT-2X Instrucciones de operaciones descargar pdf (Pagina 57)

Bench Setup and Operation 3-29

SG4000 Installation and Operation Manual

Connect the appropriate return RF cables from the SG4-RF modules to the combined

redundant return board.

6 Position jumpers J3 and J6 as required by the number of active inputs you are using.

Jumper

J3 enables/disables IN4 and jumper J6 enables/disables IN2.

7 Ensure that the PIC cable is properly connected to the lid router board and center power

distribution board in the housing base.

8 Route and connect the fiber service cables.

9 Apply power to the node (see Powering the Node in this section). Allow five to ten seconds

for the system self-diagnosis to complete.

10 Verify that the green LED (ON), located on the top panel of each transmitter, is illuminated

to confirm enable status. Refer to Section 4, “Modules,” for fault LED functions.

11 Measure the RF power at the test point on the top of each return path transmitter.

The −20 dB test points are located after the JXP pad location and indicate the level into the

transmitter.

12 Place the proper JXP pads into the transmitter pad facilities to achieve the nominal total

power level of −5 dBmV at the test point.

13 Review return-path system levels.

The unit is configured to drive the laser to the recommended level (+15 dBmV) when the

total combined power at all housing ports is approximately +28 dBmV.

14 Measure the optical power level at the test point on the top of each return path transmitter.

The scaled voltage at this test point is 1.0 V/mW.

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Motorola SG4-DRT-2X Instrucciones de operaciones Pagina 57