Motorola SG4-DRT-2X Betriebsanleitung PDF herunterladen (Seite 54)

3-26 Bench Setup and Operation

SG4000 Installation and Operation Manual

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

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

board in the housing base.

8 Route and connect the fiber service cable.

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 the 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 provided on top of the return path transmitter.

The −20 dB test point is located after the JXP pad location and indicates the level into the

laser.

12 Place the proper JXP pad into the transmitter pad facility 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 provided on the top of the return path

transmitter.

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

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Motorola SG4-DRT-2X Betriebsanleitung Seite 54