EFJohnson 3000 SERIES - Manual (Page 167)

MULTI-NET CONSOLE MODULE (MCM)
20-3
4. Normal Operation
a. Set S5 to 0, normal operation (close sections 1, 2,
3, and 4).
b. Reset the module, press S2 and release.
c. Remove the input alignment tone from J1.
NOTE: FSK is not aligned since it is not used on the
MCM.
20.4 ALIGNMENT
Connections to the MCM may take several forms:
•
Direct Connection.
•
Leased Lines.
•
Microwave Link.
•
T1 Channel Bank Interfaces.
This ancillary equipment requires certain input
and output levels for proper operation. The module
should be adjusted accordingly.
Main Transmit
1. Determine the maximum level to be received by the
ancillary equipment to be transmitted.
2. Set S5 to 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 normal operation (all sections closed).
6. Reset the module, Press S2 and release.
Example: Microwave has -16 dBm maximum
input, set J12 for -28 dBm.
Proceed To Talk Tone Level (Orbicom Consoles)
When using the Multi-Net Console Module with
an Orbicom Console, perform the following
alignment.
1. Set S5 to Test 1 (open section 1, close sections 2, 3,
and 4).
2. Adjust R83 for -3 dBm ±0.5 dB level at TP3.
3. Set S5 to 0, normal operation (close sections 1, 2, 3,
and 4).
4. Reset the module, Press S2 and release.
Main Receive
1. Determine the maximum transmit level that is sent
by the ancillary equipment to the interface module.
2. Set S5 to Test 1 (open section 1, close sections 2, 3,
and 4)
3. Reset the module, Press S2 and release.
4. Insert the maximum level determined in Step 1
using a 600-ohm audio oscillator into EQU port of
J1. Otherwise, set the ancillary equipment to send
the alignment tone to the interface module.
5. Adjust R41 to be -6 dBm at J11.
6. Set S5 for normal operation (all sections closed).
7. Reset the module, Press S2 and release.
Example: Microwave has +7 dBm maximum
output, set J11 for -5 dBm.
Secondary Transmit and Receive
Not aligned since the MCM does not use FSK
signaling.