10
WIR TX75 PRO Infrared Transmitter
figure 7: balanced line out (XlR) to WIR TX75 PRO line input (Phoenix Contact® connector) cable
1
2
3
FEMALE XLR
RED (IN PHASE)
RED
2 CONDUCTOR
WITH SHIELD
BLACK (SIGNAL)
BLACK
TO TX75
SHIELD NOT CONNECTED
ON TX75 CABLE END
1= SHIELD, 2= RED (SIGNAL IN PHASE), 3= BLACK (SIGNAL)
PHOENIX
+
-
UNBALANCED AUDIO
1
2
3
FEMALE XLR
RED (IN PHASE)
RED
2 CONDUCTOR
WITH SHIELD
BLACK (SIGNAL)
BLACK
TO TX75
SHIELD CONNECTED TO GND
ON TX75 CABLE END
1= SHIELD, 2= RED (SIGNAL IN PHASE), 3= BLACK (SIGNAL)
A509
PHOENIX
+
-
BALANCED AUDIO
figure 8: Unbalanced line out (XlR) to WIR TX75 PRO line input (Phoenix) cable
1
2
3
FEMALE XLR
RED (IN PHASE)
RED
2 CONDUCTOR
WITH SHIELD
BLACK (SIGNAL)
BLACK
TO TX75
SHIELD NOT CONNECTED
ON TX75 CABLE END
1= SHIELD, 2= RED (SIGNAL IN PHASE), 3= BLACK (SIGNAL)
PHOENIX
+
-
UNBALANCED AUDIO
1
2
3
FEMALE XLR
RED (IN PHASE)
RED
2 CONDUCTOR
WITH SHIELD
BLACK (SIGNAL)
BLACK
TO TX75
SHIELD CONNECTED TO GND
ON TX75 CABLE END
1= SHIELD, 2= RED (SIGNAL IN PHASE), 3= BLACK (SIGNAL)
A509
PHOENIX
+
-
BALANCED AUDIO
Adjust the Audio level
line level Source
After an audio signal has been connected to the transmitter, adjust the audio source gain until the WIR TX75 PRO audio-level
indicator for that channel blinks periodically.
microphone Source
Speak into the microphone from a normal distance and at a natural voice level. Use the microphone gain adjustment on the TX75
to set the gain to the point where the audio level indicator on the selected channel blinks periodically. If the audio level indicator is
always on or on most of the time, the level is too high. If the audio level indicator is never on, the level is too low.
Connecting master and Slave Units
Connect all WIR TX75 PRO master and WIR TX75-S slave(s) units together using CAT-5e cables, the “to slave” jacks on the
master, and the “Master In” jack on the slave(s). For systems with no slave units, the CAT-5e cables and “to slave” jacks are not
used. For systems with one slave unit, either “out 1” or “out 2” may be used.
When a cable is plugged into a “to slave” jack, the master unit will automatically detect mis-wired, intermittent or bad CAT-5e
cables; a yellow status indicator light will blink on that channel’s “to slave” jack to indicate any problem. See WIR TX75 PRO
Indicators table on page 12 for instructions on how to read indicator lights.
The WIR TX75 PRO automatically detect when slave units are plugged in, establishes a data link to verify operation, monitors
status, and enables baseband output to the slave emitter(s).
