Toner Cable SDQPSK Digital Satellite Demodulator - Manual (Page 3)

FEATURES
•
Convenient front panel buttons
allow easy channel selection.
•
SAW Filtered.
•
Low phase noise.
•
May be used with 256 QAM.
•
Coverage of CATV and Broadcast
channels.
RF INPUT
Frequency Range: * 54 to 806 MHz;
OFF-AIR channels 2 to 69, CATV channels 2 to 125.
Input level Range: -15 dBmV to +30 dBmV.
Impedance: 75 Ohms.
Noise Figure: 12 dB, maximum.
Image Rejection: 80 dB.
OUTPUT
IF Frequency: 44 MHz.
Level: +30 dBmV, ±2 dB.
Impedance: 75 Ohms.
Frequency Stability: ±5 PPM.
IF Bandwidth: 6 MHz @ -3 dB, SAW filtered.
SSB Phase Noise: -92 dBc @ 10 kHz offset.
Amplitude Flatness
(6 MHz Channel): ±0.5 dB.
DIGITAL PERFORMANCE
MER WITH 8VSB: >25 dB (unequalized), >35 dB (equalized).
SPECIFICATIONS
•
Convenient front panel buttons
allow easy channel selection.
•
RF Output is +45 dBmV.
•
Low phase noise.
•
Designed for use with 256 QAM.
•
Coverage of CATV and Broadcast
channels.
DUC860/DUC550
Digital Upconverters
The DUC860 and DUC550 are professional, low noise, upconverters
used to translate the 44 MHz digital IF signal from the TMQAM
modulator or DDC806 downconverter to the desired CATV output
channel. Both modules feature low phase noise and can be used for
QAM modulation up to 256 QAM. The DUC550 is used for output
frequencies between 54 MHz and 550 Mhz. The DUC860 is used or
output frequencies between 550 MHz and 860 MHz. This one-unit
wide module can be rack mounted using the DRMM12 rack mount.
DDC806
(cont.)
IF INPUT
Input Level: +30 dBmV, ±2 dB.
Imput Impedance: 70 Ohms, return loss >10 dB.
OUTPUT
Frequency Range-
DUC860: 550 to 860 MHz:
CATV channels 78 to 134,
Broadcast TV Channels 27-69.
(internal jumper set to BC position).
DUC550: 50 to 550 MHz;
CATV channels 2 to 78, 95 to 99,
Broadcast TV Channels 2-27.
(internal jumper set to BC position).
Output Level: +45 dBmV minimum, 15 dB adjustment range.
Broadband Noise: -73 dBc (6 MHz bandwidth)
@ +45 dBmV ouput level.
In Channel C/N: 63 dB (6 MHz bandwidth)
@ +45 dBmV output level.
OUTPUT (cont.)
Spurious Outputs
(5 MHz to 900 MHz): -60 dBc @ +45 dBmV output level.
Output Impedance: 75 Ohms, >10 dB return loss.
Amplitude Flatness Over
6 MHz Channels: ±0.25 dB maximum.
SSS Phase Noise: -95 dBc @ 10kHz offset,
-65 dBc @ 1 kHz offset.
Frequency Stability: ±5 ppm.
MER: 33 dB minimum (unequalized),
36 dB minimum (with blind equalizer).
GENERAL
DC Power Input: +12 V ±5% at 230 mA typical,
250 mA maximum.
+ 5 V ±5% at 280 mA typical,
325 mA maximum.
Operating Temperature: 0°C to + 50°C, ambient.
Size: 1'' W x 3.5'' H x 9.25'' D
(2.5 cm W x 8.9 cm H x 23.5 cm D).
Weight: 1 lb. 1 oz. (0.45 Kg).
SPECIFICATIONS
FEATURES