● Four or eight programmable RS-232, RS-422 or RS-485 Serial Ports. No need to remove the module to make changes. ● Multiprotocol capability - ASYNC mode standard, HDLC, SDLC, and other bit oriented protocols with custom firmware. Supports virtually any serial data transfer application. ● Asynchronous mode select character format, flow control and clock sources. Program any asynchronous format. ● Any standard baud rate from 50 to 460.8 Kbaud with internal clock. Wide range of programmable baud rates. ● Message-based or Fast Data Channel buffers for continuous high-speed data transfer. Allows continuous serial data with minimal VXIbustime. ● Programmed termination resistors for RS-485 half duplex operation. Eliminates external resistors. ● Alpha numeric status display on front panel. Shows device activity and interface diagnostics for program debugging.
ICS Quad Serial Module VXI-5539A provides four or eight asynchronous RS-232/RS-422/RS-485 VXI serial channels. Module uses VXI Fast Data Channels to transfer the TX and RX data to and from the Slot 0 Controller. The Fast Data Channel buffers enable the VXI-5539A to maintain continuous high-speed data transfer without tying up the VXIbus backplane and the Slot 0 Controller. The VXI-5539A is a VXI to RS232 or a VXI to RS422 Module.
Sets VXIbus logical address 1 through 254 or selects dynamic addressing
Indicators
Four character LED display that shows device activity, errors, SYSFAIL and diagnostic messages as alphanumeric nmemonics. Push button selection of normal or extended messages and diagnostic routines.
Interface Specifications
Four or eight independent programmable channels with RS-232/RS-422/RS-485 signals and asynchronous characters.
Hardware Capabilities
Asynchronous mode with internal or isochronous clocks (standard)
Synchronous (byte-oriented) formats and IBM Bisync or SDLC/HDLC formats require additional firmware.
Asynchronous Capabilities
Baud rates from 50 to 460.8 Kbits/sec. with internal baud rate generator. Isosynchronous rates up to 10 Mbits/second with external clocks.
Character Format
5, 6, 7 or 8 bits/character
1, 1.5 or 2 stop bits
Odd, Even, or No parity
Flow Control
By hardware handshake
Transmission Modes
RS-232
RS-485 Full or Hall Duplex
RS-485 Half Duplex
Loopback and Echo test modes
RS-232 Signal Levels
Transmit
± 8 VDC typ.
Receive
± 3 VDC max.
RS-422/RS-485 Levels
Transmit
± 2 VDC min.
Receive
± 0.2 VDC min.
Termination Resistors
(program enabled in RS-422 and RS-485 modes)
150 Ω load
2.2 KΩ bias to GND and +5VDC
Data Transfer Modes
Message based data
Fast Data Channel buffers
Fast Data Channel Buffers
Buffer
4 Channel Units
8 Channel Units
Transmit
128 Kbytes
256Kbyts
Receive
128 Kbytes
256Kbyts
Pulse Output
Programmable pulse output for timing or test synchronization. Only available on 8 channel units.
Period
0.0001 to 3 sec
Width
0.0001 to 3 sec
Grootte
3.05 x 233.5 x 353mm (W x H x D)
Power
Power Consumption
+5 VDC @ 2.0 Amps
± 12 VDC @ 0.2 Amps
Mechanical
Serial Connectors
4 channels
DE-9P connectors with female screw locks for each channel
