Motorola DCT1800 installation manual Specifications

Appendix A

Specifications

Input frequency	54 - 860 MHz (excluding data carrier frequency)
HRC/IRC frequency assignments	Downloadable
Number of channels:	136 carriers per cable
Analog	1 channel per carrier
Digital	More than 1 channel per carrier, content dependent
Input analog video level	0 dBmV – +15 dBmV
Input analog sound level	–17 dBmV – +2 dBmV
Average digital input level	–10 dBmV – +5 dBmV
Data carrier:	QPSK-modulated carrier
Frequency	Agile
Bandwidth	1.5 MHz
Level	–10 dBmV – +5 dBmV
Video s/n	49 dB @ 0 dBmV input level
Output frequency accuracy	±150 kHz
Return loss:
Input	6 dB minimum
Output	8 dB minimum
Spurious output	–57 dBc maximum, in band
Cross-modulation distortion	–56 dB (136 channels, each @ +15 dBmV)
Composite second order distortion	–57 dB (136 channels, each @ +15 dBmV)
Second order distortion	–60 dB (136 channels, each @ +15 dBmV)
Composite triple beat distortion	–57 dB (136 channels, each @ +15 dBmV)
Set-top input beats (with all input signals)	–25 dB (136 channels, each @ +15 dBmV)
Hum modulation distortion	3 IRE
Output level	10 - 15 dBmV
Isolation (input/output)	70 dB minimum
Differential phase	10 degrees (maximum)
On-screen display (OSD):
Screen size	352 x 480 pixels (configuration dependent)
Message/barker capacity	Up to 40 pages (configuration dependent)
Mechanical security	Standard: security screws, unichassis construction
Operating environment range:
Temperature	0° - 40°C (32° through 104°F)
Humidity	5 - 95% (noncondensing)

DCT1800 Installation Manual