16
5 Troubleshooting
Problem
Noise, crackling, unwanted
signals.
Distortion.
Momentary loss of sound
(“dropouts”) at some locations
within performance area.
Possible Cause
1. Antenna location.
2. Interference from other
wireless systems, TV, radio,
CB radios, or defective
electrical appliances or
installations.
1. (Bodypack transmitter
only:) GAIN control is set
too high or too low.
2. Interference from other
wireless systems, TV, radio,
CB radios, or defective
electrical appliances or
installations.
1. Antenna location.
Remedy
1. Relocate receiver.
2. Switch off interference
sources or defective appli-
ances or use a WMS 40
tuned to a different fre-
quency; have electrical
installation checked.
1. Turn GAIN control down or
up just enough to stop the
distortion.
2. Switch off interference
sources or defective appli-
ances or use a WMS 40
tuned to a different fre-
quency; have electrical
installation checked.
1. Relocate receiver. If dead
spots persist, mark and
avoid them.
6 Specifications
Carrier frequency range 710 to 865 MHz
Modulation FM
Audio bandwidth 40 to 20,000 Hz
Frequency stability (-10°C to +50°C) ±15 kHz
T.H.D. at 1 kHz 0.8% typ.
Compander integrated
Signal/noise ratio 103 dB(A) typ.
Current consumption 95 ±15 mA
Power requirement 12 to 16 V DC
Input sensitivity -95 dBm typ.
Squelch threshold -70 to -98 dBm
Audio outputs XLR bal. and unbal. 1/4” jack: adjustable from mic to line
level: 2 Vrms max.
Size (WxDxH) 235 x 142 x 43 mm (9.3 x 5.6 x 1.7 in.)
Net weight 470 g (16.6 oz.)
This product complies with the following standards: EN60065:1998, EN301 489-9 v.1.1.1
(09-2000), and EN300 422-2 v.1.1.1 (07-2000).