EFJohnson 3000 SERIES Switch User Manual


 
WIDE AREA MODULE (WAM)
19-4
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. Select for normal operation (S5 all sections closed).
6. Reset the module, Press S2 and release.
Example: Microwave has -16 dBm max input, set
J12 for -28 dBm.
Main Receive
1. Determine the maximum transmit level that is sent
by the ancillary equipment to the interface module.
2. Select Test 1 (S5 open section 1, close sections
2, 3, 4).
3. Reset the module, Press S2 and release.
4. Insert an alignment tone -12 dB from the level deter-
mined 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 inter-
face module.
5. Adjust R41 to be -6 dBm at J11, +6 dBm if
maximum level is sent by the ancillary equipment.
6. Set S5 for normal operation (S5 all sections closed).
7. Reset the module, Press S2 and release.
Example: Microwave has +7 dBm maximum
output. Apply -5 dBm and set J11 for -6 dBm or
apply +7 dBm, then set for +6 dBm.
Secondary Transmit and Receive
Not used since the secondary line is not used.
19.4 WAM E&M-LEAD CONNECTIONS
NOTE: All WAM E&M Lead connection Examples and
Figures reflect only one WAM configuration (WAC)
and only one Switch per location.
Duplication of the following Examples and Figures
are required for multiple, simultaneous WACs.
Multiple Switches per location that are included in
a WAC in any of the following Examples and
Figures need to daisy-chain E-Lead inputs and M-
Lead outputs and then connect them together. (An
example that has one Location with three Switches
is shown in Figure 19-3.)
Figure 19-3 WAM E&M LEAD CABLE LAYOUT
1 LOCATION
MA
MB
EA
EB
TXS+ (MA2)
TXS- (MB2)
WAM/SWITCH 1
MA
MB
EA
EB
TXS+ (MA2)
TXS- (MB2)
WAM/SWITCH 2
MA
MB
EA
EB
TXS+ (MA2)
TXS- (MB2)
WAM/SWITCH 3
MA
MB
EA
EB
EXTERNAL
CONNECTIONS
(SEE NOTE)
NOTE: EXTERNAL CONNECTIONS ARE THE INTERFACE TO
ANY ADDITIONAL LOCATIONS.