Specifications, Physical, Front panel – Contemporary Research 232-MCT User Manual

Page 4: Rear panel, Internal character generator/captioning

Contemporary Research

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