ICS GPIB-to-Serial Minibox 4894B

Levertijd:
3~4 weken
SKU
4894B

Enhanced GPIB to Serial Interface

● Provides RS-232C single-ended and RS-422/RS-485 differential serial interfaces. Compatible with all RS-232 devices and RS-422/RS-485 networks.
● Expanded baud rate range from 50 to 115,200 baud. All standard rates.
● Built-in 256 Kbyte RAM buffer for spooling data. Large data memory.
● Over 600 Kbyte/second GPIB data transfer rate. DMA handshake speeds up GPIB data transfers.
● Transparent data transfer. Does not require data input/output commands.
● Saves configuration settings in flash memory. Configure unit without having to remove the cover.
● Programmable replacement for the NI CV interfaces. Upgrade to a 488.2 Interface.

 

The ICS GPIB-to-Serial Minibox 4894B is an enhanced bidirectional IEEE-488.2/GPIB to serial interface that can be used to adapt devices with RS-232 and RS-485 (RS-422) serial interfaces to the GPIB Bus. A 256 Kbyte RAM buffers up to 252,000 characters and frees the computer for other tasks while the ICS GPIB-to-Serial Minibox 4894B transparently transfers data to or from the serial device. The 4894B's high speed DMA handshake transfers data at rates > 600 Kbytes/sec to minimizes GPIB bus data transfer time. The ICS GPIB-to-Serial Minibox 4894B's ability to run at any rate from 50 to 115,200 baud and in full or half-duplex mode makes it the ideal interface for driving modems, plotters, PLCs, RS-485 networks and other serial devices from the GPIB Bus. Can also be used to replace the National Instruments GPIB-232-CV or GPIB-485-CV interfaces.

Meer informatie
Art.nr.
4894B
Fabrikant
ICS Electronics
Land van herkomst
Verenigde Staten
GPIB Capabilities
IEEE 488 Bus Interface
The 4894B's 488 Bus interface meets IEEE STD 488.1-1987 and has the following capabilities:
G Mode: SH1, AH1, T6, L3, SR1, PP0, DC1, RL0, DT1, C0 and E1/E2 drivers.
S Mode: SH1, AH1, T3, L2, SR0, PP0, DC0, RL0, DT0, C0 and E1/E2 drivers.
GPIB Addresses 0-30 primary addresses
SRQ Generation
SRQs are generated if the unit is not addressed to talk, if SRQs are enabled and one of the following occurs:
488.2 Mode: Any combination of enabled ESR, STB, Operational or Questionable register bit(s). Includes data in Rx buffer, Rx message received, Rx buffer full, GPIB buffer empty and GPIB buffer full.
NI-CV Emulation Mode: GPIB buffer empty and data in serial buffer only.
Escape Sequence In G mode the 4894B powers up in the transparent Data sub-mode. Device Trigger is used to switch from Data to Command sub-mode. SCPI SYST:OPER DATA command is used to switch back to the Data sub-mode.
488.2 Common Commands *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RST, *SRE, *STB, *TST?, IST?, *PRE, *PRE?, *PCB, *SRE? and *WAI
Buffers

GPIB Input Buffer

220,000 bytes
Serial Input Buffer 32,000 bytes
Data Transfer Rate > 600 Kbytes/sec.
Interface Specifications

Serial Interface

Provides RS-232C single ended or RS-485 (RS-422) differential signals on a DB-25S connector. Pin assignments conform to EIA RS-530 specification and are pin compatible with most RS-232 devices. Signal selection by internal jumpers.
Baud Rates All standard rates and any user rate from 50 to over 115,200 baud. Parser selects closest integer rate for non-standard baud rates.
Data Character Formats
Data bits 7 or 8 bits
Parity Odd, even or none
Stop bits 1 or 2
Transmit Enable Modes
Full-duplex Transmitter always active.
Half-duplex Transmitter tristated 0.2 ms after last character.
Data Transfer Protocols
Hardware handshake always enabled.
X-on /X-off handshake enabled or disabled by a separate command.
Controls and Indicators
Front Panel Indicators
PWR Indicates power on
RDY Unit has passed self test
TALK Unit has recognized its Talk Address
LSTN Unit has recognized its Listen address
BUSY Blinks while receiving serial data
FULL An internal data buffer is full
Grootte
189.2 x 141.5 x 38.6mm (l x w x h)
Omgeving
Operating Temperature -10 °C ~ +55 °C
Storage Temperature -20 °C ~ +70 °C
Humidity 0-90% RH without condensation
Shock/Vibration Normal handling only
Construction All metal case
Power
9 to 32 VDC @ 3.5 VA
Included Accessories
Instruction Manual
Support CD ROM
UL/CSA/VDE approved AC power
Adapters provided for Europe - 230±10% Vac, 50/60 Hz
ICS GPIB-to-Serial Minibox 4894B aanpassen
Aantal
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Enhanced GPIB to Serial Interface
ICS GPIB-to-Serial Minibox 4894B
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