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ICS GPIB Bus Switch 4842
GPIB Bus Switch and Multiplexer
● Operates as a 1:2 or 1:3 bus switch, permitting a single controller to operate three IEEE 488 Bus systems and up to 39 devices. Expands the number of instruments beyond the IEEE 488 limits.
● Operates as a 2:1 or 3:1 multiplexer so up to three bus controllers can share a common IEEE 488 bus, instruments, or GPIB peripherals. Time-shares expensive equipment.
● Cascadeable for large system applications. Easy expansion to nine buses.
● High data-transfer rate and minimum signal delays. Does not degrade system performance.
● Each bus controller can poll the 4842's status to determine availability of shared instruments or peripherals. Find out what's happening on the remote bus.
● Reservation stack with automatic SRQ to next controller. Reserves your turn with the shared equipment.
● IEEE-488.2 compatible unit uses SCPI commands. Uses standardized commands
for easy programming.
The Model 4842 GPIB Bus Switch is a GPIB controlled switch that enables several GPIB Controllers to share one or more GPIB device(s) or lets a single GPIB Controller operate multiple Bus systems. The 4842 is basically a GPIB controlled A-B-C switch for the GPIB bus. When used as a Bus Switch, the 4842 lets a GPIB controller connected to the common port select and control devices attached to the numbered ports. When used as a Multiplexer, the ICS GPIB Bus Switch 4842 lets Bus controllers connected to the numbered ports share the common bus and any devices attached to it.
IEEE 488 Bus Interface | Each port meets IEEE STD 488.1-1987 and is compatible with all IEEE 488 Bus commands. Loading is one GPIB load per numbered port. |
Address Capability | Primary addresses 0-30 |
488.2 Common Commands | *CLS, *ESE, *ESE?, *ESR?, *IDN?, *OPC, *OPC?, *RCL, *RST, *SAV, *SRE, *SRE?, *STB, TST? and *WAI |
SCPI Commands | Used to set and query all programmable functions. The 4842 conforms to SCPI 1995.0 Specification. |
Signal Pass-thru Specifications | Bidirectional data transfer for all bus signals. SRQs combined to generate an SRQ on the common port |
Signal delay | 5 ns max. |
Data Handshake Delay | 10 ns max. |
Handshake Rate | >2 Mbyte/s. |
Parallel Poll Delay | 10 ns max. |
Switch 'on' resistance | <5 Ω |
Switch response | <24 ms |
Front Panel Indicators | |
PWR | Indicates power on |
RDY | Unit has passed self test |
TALK | Unit is addressed to talk |
LSTN | Unit is addressed to listen |
PORT 1 | Connected to Common Port |
PORT 2 | Connected to Common Port |
PORT 3 | Connected to Common Port |
ERR | Unit has detected a command error |
Controls | |
POWER | Front panel switch |
RESET | Front panel button |
ADDRESS | Rear panel GPIB address |
MPXR | Rear panel mode select |
Operating Temperature | -10 °C ~ +55 °C |
Storage Temperature | -20 °C ~ +70 °C |