11
WIR TX75 PRO Infrared Transmitter
Once a master and slave unit are connected, the yellow and green indicators located on the “to slave” and “Master In” jacks mimic
each other. This allows the user to know the status of the entire system by simply looking at the indicators on the back of the
master unit. A switch is provided to turn off all indicator lights AFTER initial set-up, to allow for less conspicuous operation.
Note: The WIR TX75 PRO will automatically detect and adjust for differences in CAT-5e cable length. Matching cable lengths
to the slaves is not necessary. Cable length up to 100 feet may be used.
figure 9: Connecting a WIR TX75 PRO master transmitter to two WIR TX75-S slave emitters
TO SLAVE ONLY
POWER
PHOENIX
MIC
CAT5E
TX75 PRO MASTER
TX75-S SLAVE #1
(OPTIONAL)
AUDIO
SOURCE
MICROPHONE
(ELECTRET)
AC POWER
SOURCE
TX75-S SLAVE #2
(OPTIONAL)
A508
Troubleshooting
For easier troubleshooting, the TX75 units are equipped with a series of self-tests and indications. Please see WIR TX75 PRO
indicator lights table on page 12 to aid in troubleshooting.
The WIR TX75 PRO “Power Indicator” is not lit:
• Make sure the power supply is plugged into the transmitter and any remote power switch is on.
• Set the “Indicators” switch on the back panel to “On”.
• Make sure the electrical outlet is on.
• Make sure the 48 VDC power supply is working.
The WIR TX75 PRO’s Ch1 or Ch2 “Audio-level Indicator” does not light:
• Make sure the WIR TX75 PRO is plugged in.
• Set the “Indicators” switch on the back panel to “On”.
• Make sure the audio input is connected properly. Refer to figures 6,7,8, or 9 depending on the connection being used.
• Make sure an active and adequate level audio signal is being sent to the WIR TX75 PRO transmitter.
