User manual for the Jiuzhou Technology QAM860-AS digital modulation converter, covering installation, operation, specifications and troubleshooting.
The Jiuzhou Technology QAM860-AS digital modulation converter is a front‑end device for digital cable TV systems. It can demodulate QPSK satellite signals, perform error‑correction coding and QAM modulation, and output RF signals directly onto a cable network.
The manual provides safety and installation guidelines, detailed panel descriptions, menu configuration steps, technical specifications, and a troubleshooting guide for common faults such as power‑indicator issues and signal lock problems. This manual is written in Chinese.
| Input satellite frequency | 950 MHz ~ 2150 MHz |
|---|---|
| Output RF level | 40 ~ 60 dBmV |
| Power consumption | 25 W MAX |
| Dimensions | 480 × 320 × 45 mm |
| Weight | 4.5 kg |
| Operating temperature | 0 ~ +50 °C |
Check that the power is connected; if the power supply is faulty, replace the fuse or send the unit for repair.
Select the MASTER RESET option in the SYSTEM menu and confirm the prompt; the device will restart and all parameters return to their original values.
It means the ASI input/output loop is not connected or the QAM modulation is experiencing an error; check the ASI connections and reload the program.
Enter the QAM PARAMETER menu, select QAM MODE, then modify the symbol rate and confirm with OK; the changes are saved after three OK flashes.