ATC-105 optical isolation interface converter is a device compatible with RS-232C, RS-422 and RS-485 standards. It can convert single-ended RS-232 signals to balanced differential RS-422 or RS-485 signals. The internal optical isolator provides 3500V isolation voltage and has transient voltage suppression function, which can effectively prevent lightning and common ground interference.
The ATC-105 Light Isolation Interface Converter is compatible with RS‑232C, RS‑422 and RS‑485 standards and converts single‑ended RS‑232 signals to balanced differential RS‑422/RS‑485 signals. It includes a built‑in optical isolator with 3300 V RMS isolation voltage and transient voltage suppressors for lightning and ESD protection.
The manual covers performance parameters, connector pin‑outs, installation settings, four communication modes (point‑to‑point and point‑to‑multiple, full‑duplex and half‑duplex), wiring diagrams, and fault diagnosis procedures. It also provides a brief overview of RS‑232C interface basics. This manual is written in Chinese.
| RS‑232 Connector | DB9 female |
|---|---|
| Transmission Medium | Twisted pair or shielded cable |
| Working Mode | Asynchronous half‑duplex or full‑duplex |
| Signal Indicator LEDs | TXD, RXD, PWR |
| Isolation Voltage | 3300 V RMS (500 V DC continuous) |
| Data Rate | 0‑115.2 kbps |
| Dimensions | 125 mm × 54 mm × 22 mm |
| Maximum Devices in Multi‑point | 32 RS‑422/RS‑485 devices |
Set the left switch to the DCE position for a PC (DTE) connection; set it to DTE when connecting to other RS‑232 devices.
It supports four modes: point‑to‑point/four‑wire full‑duplex, point‑to‑multiple/four‑wire full‑duplex, point‑to‑point/two‑wire half‑duplex, and point‑to‑multiple/two‑wire half‑duplex.
Up to 32 devices can be connected in a multi‑point configuration.
The converter provides an isolation voltage of 3300 V RMS (500 V DC continuous).