Contemporary Research
4
232-MCT Mono Caption Tuner
Specifications
Physical
Size:
8.5" [216mm] wide x 1.75" [38mm] height (1RU) x 6.0" [153mm] deep
Weight:
1.5 lbs [0.68kg]
Enclosure:
All aluminum with durable black powder coat paint
Mounting:
Rack mounting for one or two units side-by-side optional (RK1, RK2)
Front Panel
IR Sensor:
Receives 57 KHz IR commands, CR mode 9 or Sharp TV
Power LED:
Green LED behind IR window lights when power is on (AV unmuted)
Rear Panel
Power In:
2.1mm coaxial jack (inside center conductor positive), 350 mA maximum
10.5 to 14.5 VDC, 12 VDC typical (may be unregulated)
RS-232 Control:
DB-9 male connector
User selectable 300 to 19,200 (9600 default) baud, 8 data bits, no parity, 1 stop bit
Employs standard ASCII strings from any terminal program, PC, or control system
Can accept non-standard RS-232, including 0 to +5 VDC operation
Integrates with 232-AMP, daisy-chain RS-232, set tuner to Unit 2
Closures:
2 momentary closure inputs - Channel Up (Pin 4), Down (Pin 9), GND (Pin 5)
IR In:
3.5mm stereo jack for optional IR-RXC IR Receiver
Sleeve= DC power+ from power jack input, limited to less than 100mA
Ring=DC power– (GND)
Tip= IR data signal
Antenna/Cable:
‘F’, female, 75 ohm impedance
AV Input:
1 RCA female NTSC composite, 2 RCA mono audio (mixes stereo input to mono)
Video Output:
RCA female, NTSC composite, 75 ohm impedance, 1V peak-to-peak typical
Audio Outputs:
2 RCA female, mono, unbalanced, 330 ohms impedance
(they are marked Left/Right, but both provide the same mono output)
Response:
Total Harmonic Distortion (THD) 0.5%, 0.1% typical 20Hz to 20KHz
Level:
+8dBu, (2V RMS), 0 to -70 dB and mute, 64 steps
Internal Character Generator/Captioning
Characters:
ASCII
Format:
White text over video or white text with black background over video,
Up to 32 characters, 13 lines
Function:
Closed captioning, channel labels, interactive menus, messages, and system feedback
Captioning:
Modes CC1-CC4, TT1-TT4, On/On with Mute/Off modes, CG text times out to show
captioning
