EFJohnson 3000 SERIES User Manual

Page 151

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LOGGING ENCODER MODULE (LEM)

17-3

Main Transmit

1. Determine the maximum level to be received by the

ancillary equipment to be transmitted.

2. Set S5 for Test 1 (open section 1, close sections 2, 3

and 4).

3. Reset the module, Press S2 and release.

4. Adjust R44 for -12 dB from the maximum level in

Step 1 at J12.

5. Set S5 for Test 8 (open section 4, close 1, 2 and 3).

6. Reset the module, Press S2 and release.

7. Adjust R86 to be -3 dBm

±

0.5 dB at TP4.

8. Verify the level at J12 to be -12 dB

±

1 dB from the

maximum level from Step 1.

9. Select for normal operation (S5 all sections closed).

10.Reset the module, Press S2 and release.

Example: Microwave has -16 dBm max input, set
J12 for -28 dBm.

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