Specifications – Contemporary Research QMOD-SDI Manual User Manual
Page 4

Contemporary Research
4
QMOD-SDI
Specifications
Physical
Size: 8.5” [216mm] wide x 1.75” [44mm] height (1RU) x 6.0” [153mm] deep
Weight: 1.5 lbs [0.68kg]
Temperature: +32° to 122° F operating temperature, convection cooled
Mounting: Rack mounting for one or two units side-by-side optional (RK1, RK2)
Front Panel
Setup, Select and directional buttons for front-panel setup
Menu LCD, 2 lines of 20 blue characters each
Encoding
MPEG2 Profile: MP@HL for HD, MP@ML for SD
1080i, 720p, 480p, and 480i resolution, depending on input
Video Encoding bitrate 18 or 25 Mbps
MPEG1, Layer 2 audio
Modulation
Latency
Switchable 64/256 QAM, J83 Annex B, Interleaving Modes (128,1)
MER 38 dB typical
360 ms@720p, 660ms1080i, includes all processing and tuning
HDTV modulators experience more latency, as the media is converted to
MPEG2 and QAM, then distributed over RF.
Compliance
FCC Class B, ROHS, meets California standards
Power
2.1mm coaxial jack (inside center conductor positive)
0.8 A maximum, 11.5 to 13.5 VDC, 12 VDC typical
Real Panel
RS-232
Closures
SDI Input
Video Inputs
Audio Inputs
RF Out
DB-9 male, RS-232 data link to control system
300 to 19,200 baud (9600 default), 8 data bits, no parity, 1 stop bit
3 GPI Pins in DB-9, selects composite/stereo inputs for EAS
4=1, 9=2, 5=GND
BNC Female
SD-SDI rate 270Mb/s or HD-SDI rate 1.485Gb/s
Coax cable auto-equalizer for SD up to 460m, HD up to 230m (RG6)
Auto-sense 1080i at 29.97Hz, 720p at 59.94Hz, or SD 480i at 29.97 Hz
Video Format YCbCr 4:2:2
Can accept SDI embedded Stereo 48KHz digital audio, Groups 1-4
Component: RCA Y, Pb, Pr (1080i/720p/480p/480i) , 59.94/29.97 Hz
Note: If source outputs Component on a DB-15, use VGA cable to wire to QMOD, set
QMOD to Component
S-Video: Y(Composite), C (Blue Pb) 480i, 29.97 Hz
Composite: RCA female (480i), 29.97 Hz
Digital SPDIF: Coax and TOSlink optical output, PCM 48K sample rate
Analog L and R: 2 stereo RCA female jacks
Inputs assignable to video inputs
‘F’, female, 75 ohm impedance
Agile, channels 2-135 (48-860 MHz), standard, HRC, or IRC spacing
6 MHz bandwidth fits any open channel without interference to adjacent channels
1 KHz resolution, +/- 30 ppm accuracy, +/- 35 ppm stability
29 dBmV typical output power, attenuated in 5 steps, approx 4 dB
Includes
PS12-1 Switching power supply, 1A 12 VDC, fits in typical AC power strips
PS12-4Y 4A power supply with Y cable to drive 2-4 QMODs (free at time of order)
Options
RK1 Single Rack Kit , RK2 Dual Rack Kit
CC-232 RS-232 Cable
Firmware
4.5 Improved composite video operation
4.6 allows selection of 4:3 or 16x9 format on 480i, requires 02E7 encoder firmware
4.7 adds auto-sensing of input resolution
5.1 FPGA resets after 2 encoder resets
5.4 removes background color glitch