Contemporary Research 232-MCT - Manual (Page 5)

Contemporary Research 5 232-MCT Mono Caption Tuner
Specifications
RF Tuner
Frequency Range: NTSC television 55.25 to 801.25 MHz, 62.5KHZ fine tune resolution
Maximum Input: Maximum Input: +20dBmV max, +10dBmV nominal*
Video Gain: ±5% maximum, 2% typical
Video Phase: ±3 degrees maximum, 2 degrees typical
Includes
12 VDC power supply, 500 mA min (North American shipments only)
Options
CC-232 RS-232 Control Cable (specify make and model)
RK1 Kit for mounting single unit in 19” rack, RK2 Kit for mounting two units side-by-side in 19” rack
IC-RC IR Wireless Remote
PMT-1 Pole Mount Bracket can mount tuner (and 232-AMP) to a video projector pole.
Troubleshooting
Symptom: Problems with Cable Channels
There are three types of cable channel systems, Cable, IRC, and HRC. While the Cable setting works for over 90% of
installations, there are a few cable systems set for IRC and HRC channel frequencies. Here’s how to tell which is which:
 IRC– Channels 5 and 6 are missing. Change to IRC and they will appear.
 HRC – None of the channels tune in, or they are noisy or lack audio. Change to HRC.
Symptom: Need to change Unit # of Tuner
See Page 9 for S2 RS-232 command.
Symptom: How do I select the composite input?
Select Channel 126.