- Wide input measuring range: 40–126 dBuV
- Frequency range: 5–865MHz
- When works in return path analysis set:
- measures pilot signals of GPS-01 generators
- searches active GPS-01s
- measures spectrum of a return path
- measures frequency response of a return path
- receives auxiliary information from GPS-01s
- transmits results of all measurements through a forward path
- Measurement in the forward path:
- levels of carriers, carrier/noise, carrier/audio
- spectrum with a different frequency span
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CIU 01 is intended to work in the Return Path Analysis Set, which allows measuring frequency response function of a return path, to install and maintain TV cable network. The head end return path monitor CIU 01 performs measuring of pilot signals, injected by the GPS 01s, frequency response function and spectrum in the cable segment. Results of measurements is displayed on the screen and transmitted through the forward path simultaneously.
Specifications | |
Measuring | |
Frequency range of the return path measuring, MHz | 5-65 |
Frequency range of the forward path measuring, MHz | 46-865 |
Terminal type | BNC |
Input impedance, Ohm | 75 |
Internal attenuator, dB | 0, 20, 40 (auto) |
Return loss, dB, not less | 16 |
Input measuring range, dBuV | 40-126 |
Resolution, dB | 0,1 |
Accuracy, dB | ±2 |
IF bandwidth, kHz | 230±60 |
Low frequency filter range when in return band mode, MHz | 5-70 |
Low frequency filter attenuation in return band mode, dB, not less | 40 |
Transmitter | |
Frequency range, MHz | 400-500 |
Level range, dBuV | 60-120 |
Terminal type | BNC |
Output impedance, Ohm | 75 |
Return path analysis set characteristics | |
Time of new pilot-signals finding out, sec, less than | 60 |
Spectrum measuring time, sec, less than | 15 |
Quantity of active GPS-01s | up to 8 |
Computer terminal | RS-232 |
Power supply | |
Mains | 220±22V/50-60Hz |
Power consumption, W | 20 |
Mechanical features | |
Dimensions, mm | 483x156x133 |
Weight, kg | 3,2 |
Environmental | |
Operating temperature, °C | from +10 to +40 |
CIU-01 Manual (2.1)
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