DL-1200/1UA Power Modem User Manual, introduces the performance parameters, product diagram, indicator light meaning, interface jumper definition, power supply and its interface, jumper, rotary switch and potentiometer (ADJ) and other contents
The DL-1200/1UA is a power line modem that supports dual‑board independent operation with transmission rates of 300, 600 and 1200 BPS using binary frequency‑shift keying (FSK). It offers simplex, half‑duplex and full‑duplex modes, 2‑line or 4‑line connections, 600 Ω output impedance, and built‑in three‑stage lightning protection. Power can be supplied from AC 165‑265 V or DC 200‑360 V with hot‑backup, and the unit fits a 19‑inch 1U rack.
The manual details the front‑panel indicators, RS‑232C DB9 male connector pinout, jumper and DIP‑switch settings for line mode and frequency selection, test procedures for local and remote loop self‑checks, and a troubleshooting guide covering carrier loss, data reception issues, and other faults. This manual is written in Chinese.
| Transmission speed | 300, 600, 1200 BPS |
|---|---|
| Modulation method | Binary Frequency Shift Keying (FSK) |
| Transmission mode | Simplex, half‑duplex, full‑duplex; 2‑line or 4‑line |
| Output impedance | 600 Ω |
| Bit error rate | ≤1×10⁻⁵ |
| Signal‑to‑noise ratio | ≤16 dB |
| Power supply | AC 165‑265 V / DC 200‑360 V dual hot‑backup |
| Rack size | 19‑inch 1U |
| RS‑232C connector | DB9 male |
Connect the RJ‑11 send + to receive + and send ‑ to receive ‑, then send data from the computer and verify it is received correctly.
The factory default speed is set to 600 BPS.
It can be powered from AC 165‑265 V or DC 200‑360 V, with dual hot‑backup capability.