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Tektronix DS1000 Series Television
Demodulator
The Tektronix DS1000 Series Television Demodulators
are the answer to cable operators, broadcasters
and manufacturers that need a low-cost,
high-performance demodulator. They
support television standard M/N and
B/G.
The Tektronix DS1000 Series are full measurement grade
demodulators, with specifications better than demodulators twice their size. Input
sensitivity and other specifications make the DS1000 Series ideal for use as a repeater
or as the analog front end of an RF-to-digital conversion system in all-digital cable
systems. It can also act as a precision
set-top converter for making baseband
measurements in the field.
The Tektronix DS1000 Series are well suited for remote
node monitoring. The addressable serial port allows remote control and status monitoring
using computers and modems.
Features:
- Standards Supported:
- M/N (DS1001A/DS1001G)
- B/G (DS1002)
- Tuning Range:
- 55.25 to 801.25 MHz (M/N)
- 48.25 to 860.25 MHz (B/G)
- Stereo Sound: BTSC, Dual Tone, NICAM (System Dependent)
- Zero Carrier Pulse for Depth of Modulation Measurements
- Standard and User-defined Channel Tables
- RF Ghost Canceling Processing (DS1001G Only)
- RS-232/RS-485 I/O Port for Remote Control
- Simultaneous Left and Right and SAP Audio Output Monitoring
- Remote Monitoring of RF Input Level
- Lower Power Dissipation for Increased Efficiency and
Reliability
- Dual Video Outputs
- IF Inputs and Outputs
- Front Panel Lock-out Feature
Applications:
- Remote Node Monitoring
- Operational Demodulation
- Broadcast Demodulation
Video specifications:
| Category |
Product |
Description |
RF Tuning Range
|
DS1001
DS1002
DS1003
|
55.25 – 801.25 MHz
48.25 – 860.25 MHz
48.25 – 860.25 MHz
(under range to 45.25 MHz) |
Frequency |
|
Visual |
DS1001
DS1002
DS1003 |
45.75 MHz
38.9 MHz
38.9 MHz |
Aural |
DS1001
DS1002
DS1003 |
41.25 MHz
33.40 MHz, 33.16 MHz, 33.05 MHz (NICAM)
32.90 MHz, 32.35 MHz (NICAM) |
IF Output |
All |
+51 dBmV/+111 dB�V (typical), BNC |
RF Sensitivity |
All |
0 to +30 dBmV |
+60 to +90 dBmV |
Return Loss |
All |
> 6 dB |
Input Impedance |
All |
75 �, female F type connector |
Frequency stability |
All |
±50 kHz |
Video signal to noise |
DS1001
DS1002
DS1003 |
> 50 dB (NTC7-weighted)
> 50 dB (unified-weighted)
> 50 dB (unified-weighted) |
Video outputs |
DS1001
DS1002
DS1003 |
One BNC connector
Two BNC connectors
Two BNC connectors |
Quadrature output |
All |
1 Vpp, 90° phase of video signal on BNC
connector |
4.5 MHz
Intercarrier output |
DS1001
DS1002
DS1003 |
One BNC connector
None
None |
Differential Gain |
All |
< 1.5% |
Differential Phase |
All |
±1.5° |
Chroma/Luma Delay |
All |
< 40 ns |
Frequency response |
DS1001 |
±0.7 dB, 100 kHz to 3.58 MHz (18°C to 26°C) ±1.0 dB, 100 kHz to 3.58 MHz (5°C to 35°C) ±2 dB, 3.58 MHz to 4.1 MHz (typical) |
DS1002
DS1003 |
±0.7 dB, 100 kHz to 4.43 MHz (18°C to 26°C) ±1.0 dB, 100 kHz to 4.43 MHz (5°C to 35°C) ±2 dB, 4.43 MHz to 5.0 MHz (typical) |
Group Delay |
DS1001 |
± 50 ns, 100 kHz to 3.58 MHz |
(Sound trap off) |
DS1002 |
(Referenced to system M/N) ± 60 ns, 100 kHz to 4.43 MHz |
DS1003 |
(Referenced to system B/G General) ± 60 ns, 100 kHz to 4.43 MHz |
|
(Referenced to system I Flat) |
Luminance Bar Amp |
All |
< 2% typical |
Luminance Bar Tilt |
All |
< 3% typical |
2T K Factor |
All |
< 2.5% typical |
Line Time Distortion |
All |
< 3% typical |
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