Lectrosonics UT195 - Manual (Page 8)

OPERATING INSTRUCTIONS
1. Connect the power cord.
2. Attach the antenna.
3. Connect the audio cable to the audio output XLR.
4. Set the front panel Audio Output Level control to minimum and set the Power switch to On. Check to see that the front
panel Power LED lights up.
5. Adjust the transmitter gain. THIS IS PERHAPS THE MOST IMPORTANT STEP IN THE SET UP PROCEDURE. See
your transmitter manual (Operating Instructions section) for details on how to adjust the transmitter gain. In general, adjust
the transmitter gain so that the voice peaks will cause the 0dB LED on the front of the receiver to light on the loudest peak
audio levels. This will result in the best possible signal to noise ratio for the system without causing overload distortion.
6. Adjust the Audio Output control according to the type of input on your equipment. The Range switch (located on the back
panel) sets the adjustment range of the front panel Audio Output control and has two positions.
VAR: Allows an adjustment from –30dBm to 0dBm
FIX: Sets the audio output to a fixed +8dBm with no
front panel control.
The input levels of different cameras, VCRs, and PA equipment vary, which may require that you set the Audio Output
control to an intermediate position. Try different settings and listen to the results. If the output of the receiver is too high,
you may hear distortion or a loss of the natural dynamics of the audio signal. If the output is too low, you may hear steady
noise (hiss) along with the audio. The UR195 audio output is designed to drive any audio input device from microphone
level to +8dBm line level.
Note:
When using the +8 dBm FIX position of the output range switch, do not ground pin 2 or pin 3 of the XLR output! The
output impedance is only 50 Ohms (unbalanced) when in the FIX position and this is not enough to isolate the audio amplifier
from a short to ground. Distortion will result.
MONITOR
LEVEL
UR195 Simplified Audio
Output Circuit
AMP
3
2
1
HI
FIXED
HI
FIXED
50
1k
50
MUTE
RELAY
UR195 REPLACEMENT PARTS and ACCESSORIES
Part No. Description
A-500S UHF Rubber Duck Antenna, straight connector
A-500RA UHF Rubber Duck Antenna, right angle connector
32251 Velcro mounting strips
35753 Zippered, padded vinyl system pouch
CH12 AC Power Adapter, 110V input, 12VDC output
8