RS232 to 232 converter, serial port optoelectronic isolator

Due to the use of optoelectronic isolation technology, the electrical and ground circuits of the RS-232 devices at both ends are completely isolated, thereby protecting communication equipment from interference and damage caused by power ground circuits and surges, significantly improving the reliability and stability of the communication system. At the same time, by changing the original single ended transmission mode of the RS-232 interface and using dual line balanced transmission, the communication distance is greatly increased.

In the field of asynchronous RS-232 point-to-point using dedicated proprietary lines, HXSP-158 can be used to meet the requirements of interface protection or extended distance.

The SP-158 series products are available in 4-wire, 6-wire, and 8-wire options for power connection. The 4-wire products can transmit a pair of data signals, while the 6-wire and 8-wire products can also transmit one or two pairs of control signals.

SP-158/168 has a compact size and no special requirements for wires. It does not require an external power supply and can be directly plugged into the device's RS-232 interface, making it very convenient to use.

The SP-158/168 series products have been widely used in point-to-point RS-232 communication, connection between multi-user terminals and hosts, RS-232 remote control systems, program-controlled switch billing terminals, and satellite receivers.

1.0 Product Features:

Extend the communication distance of serial port RS-232 to 12 kilometers

◆ Balanced current transmission, strong anti-interference ability

◆ Adopting photoelectric isolation to prevent damage to equipment caused by ground wire loop waves and surges

◆ Isolation voltage reaches 3500V

◆ Supports RS-232 asynchronous communication standard

◆ Directly plug into RS-232 interface, easy to use

◆ No need for external power supply

◆ Use dedicated communication cables, ordinary wires are sufficient

The transmission rate can reach 57.6kbps

Full duplex or simplex mode, compact size

2.0 Performance Parameters:

Interface: One end complies with EIA RS-232 and CCTTT V.24

Asynchronous protocol, using dedicated 4-core copper wire on the other end

◆ Connector: DB9 hole connector is used on the RS-232 side

Use DB9 pin connector on one side of the line

Transmission mode: asynchronous, full duplex, or simplex

Distance: 12KM using 24AGW wire @ 600BPS

1KM using 24AGW wire @ 38.4KBPS

100KM using 24-AWG wire @ 57.6KBPS

◆ Isolation voltage: 3500 @ 1S or 7500V pulse

◆ Speed: Maximum asynchronous 57.6KBPS

◆ Power supply: Self powered serial port

◆ Volume: 6.8x3.4x1.6cm

Weight: 40g

Working environment: -20 to 65 ℃ (0% to 95% RH)

3.0 Application Fields:

◆ Point to point RS-232 communication

◆ Multi user system

◆ Remote terminal

◆ Multi user terminal connected to host

RS-232 remote control system

◆ Program controlled switch billing terminal

◆ Satellite receiver

◆ Remote call center system

◆ Connection between RS-232 devices that are not located on the same ground

4.0 SP-158/168 Product Function Description

RS-232C interface: DB9 pin connector (DTR and DCD short circuited, RTS and CTS short circuited)

Long distance transmission line interface: using DB9 pin connector terminal

Type: RS-232C side (near end) directly connected to DTE equipment using transmission line: 4 copper wires are used for transmission. Wiring method: There are two DB9 pin connectors on the far end, with 2 to 3, 3 to 2, 4 to 5, and 5 to 4 connections. Remote DB9 is defined as: 3 is T -, 4 is T+, 2 is R -, and 5 is R+. When the two products are connected, they are powered symmetrically by one of TXD, RTS, or DTR. Transmission signal: TXD and RXD bidirectional transmission

SP-168 Long Line Driver:

RS-232 interface: DB25 port connector (DTR and DCD short circuited,

Short circuit between RTS and CTS

Long distance transmission line interface: using DB25-pin connector

Terminal type: RS-232 (DB25 port end) directly connected to DTE equipment. Transmission line: 4 copper wires are used for transmission. Wiring method: 2 to 3, 3 to 2, 7 to 20, 20 to 7 between two DB25 pin connectors at the far end. Definition of B25 at the far end: 3 is T -, 7 is R+, 2 is T+5 is R -. Symmetrical power supply when two products are connected: powered by one of TXD, RTS, DTR, even if only TXD can work normally. Transmission signal: TXD and RXD bidirectional transmission