Filter
Top Products
4-10 CSI-200 User Instructions
Panel Mic to Channel Test
1 Turn all front panel buttons off. Set all volume controls to minimum.
2 Remove the signal from the Four-Wire B input and reconnect it to the panel mic input (J28 tip
and ring, it is easiest to connect to the back of the connector.).
3 Set the signal generator to –25 dBu, 1 kHz.
4 Turn on the CH 1 TALK, MIC ON and PANEL MIC buttons.
5 Check the channel 1 output. It should be –0.9 dBu ±2 dBu.
Carbon Mic to Channel Test
1 Turn off the PANEL MIC and MIC ON buttons. (Only the CH 1 TALK LED should be on.)
2 Connect a 470 ohm resistor across the CARBON MIC HEADSET jack (J3 tip and ring). The
MIC ON LED should turn on.
3 Remove the signal from the panel mic input, and reconnect it to the CARBON MIC
HEADSET jack.
4 Set the signal generator to 11.2 dBu, 1 kHz.
5 Check the channel 1 output. It should be –0.9 dBu ±2 dBu.
6 Remove the 470 ohm resistor from the carbon mic input.
VOX Test
1 Remove the signal from the CARBON MIC HEADSET jack, and reconnect it to the DYN
MIC HEADSET jack mic input (J2 pins 1 & 2).
2 Set the generator to –45 dBu, 1 kHz.
3 Set DIP switch DS8 to the on position (VOX enabled), and note that the MIC ON LED turns
on.
4 Adjust the signal generator output level to zero, and note that the MIC ON LED turns off.
5 Reset DS8 to off.
Mic Kill Receive Test
1 Set all buttons to off.
2 Remove the signal from the DYN MIC HEADSET jack mic input, and reconnect it to intercom
channel 1.
3 Adjust signal generator to –5 dBu, 24 kHz (check frequency with frequency counter).
4 Set the MIC ON button to on.
5 Activate the CH 1 TALK button. The MIC ON LED should turn off.
6 Attenuate the signal input by 20 dB. Try turning on the MIC ON button. It should not turn on.
7 Attenuate the signal an additional 10 dB. Try turning on the MIC ON button. It should turn on.
8 Adjust signal generator to –5 dBu at 22.320 kHz.
9 Try turning the MIC ON button on and off. It should turn on and off as usual.
10Adjust the signal generator to –5 dBu at 23.520 kHz.