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Line-Matching Transformer An RCA jack is provided near the output terminal strip for connection to a
WMT1A Connector WMT1A line-matching transformer. A 600-ohm, balanced telephone level output
signal can be obtained by plugging the RCA connector of the WMT1A line-matching
transformer into this jack and taking the output signal off of the WMT1A line-
matching transformer screw terminals (see Figure 9).This is useful for dividing a long
line when connecting to remote equipment.
Output Cover Replacement When all output connections are made, remove the appropriate knockout on the
input cover. Replace the cover and tighten the screws while dressing the wires
through the knockout hole.
.....
WMT-..A
.....
.....
.....
CLASS 2 WIRING ACCEPTABLE
Figure 9 : WMT1A Connection to RCA Jack on Amplifier
Amplifier
WMT1A
RCA Jack
Additional Power Amplifier An external power amplifier can be used with the TPU250 amplifier.You must first
add a resistor voltage divider to the telephone amplifier, as illustrated in Figure 8.
Connect a patch cord to the high-level/high-impedance input of the booster
amplifier.
TO 25V OUTPUT TERMINAL
TO HI-Z INPUT OF
BOOSTER AMPLIFIER
39K
1/2 W
10K
1/2W
TO COM ON
TERMINAL STRIP
Figure 8 : Output Circuitry