Page 1.1
PROGRAMMABLE RESISTOR MODULES 40-290/291
pickering
SECTION 1 - TECHNICAL SPECIFICATION
SECTION 1 - TECHNICAL SPECIFICATION
pickering
test
.com
PXI Programmable Resistor Module
40-290/291
ISSUE 9.1 MAR 2021
y
Dual 16-Bit or Quad 8-Bit Resolution Resistor Module
y
Programmable From 0 Ω to 32767.5 Ω in 0.5 Ω Steps
y
Built-In Non-Volatile Parametric Memory For
Calibration Data
y
Option To Include 16 SPDT Reed Relays
y
Uses High Reliability Pickering Reed Relays For
Maximum Performance
y
Over 1000 Value Changes Per Second
y
Special Versions Built To Order
y
VISA, IVI & Kernel Drivers Supplied for Windows
y
Supported by PXI or LXI Chassis
y
3 Year Warranty
The 40-290 Programmable Resistor Module comprises a dual
16-bit resistor chain together with 16 optional SPDT Reed
Relays (see diagram below). The 40-291 is configured as a quad
8-bit programmable resistor chain also with the option of 16
SPDT relays. Connections are made via a front panel 68-pin
male connector.
Programmable resistors may be connected together either
in series or in parallel to form many types of configuration.
For example potentiometers (2 resistors in series) and more
accurate resistors (connecting in parallel). Each programmable
resistor has a position for a user inserted offset value.
The 40-290 and 40-291 use Ruthenium Reed Relays for
maximum switching accuracy and operating life.
To give maximum accuracy each resistor chain has on-board
E
2
PROM, this allows accurate calibration data to be recorded for
each resistor in the chain.
If versions are required with different resistor ranges than those
shown, please contact the Sales Office for assistance.
Programmable Resistor Module Configured In Dual 16-Bit Resistor Mode With 16 x SPDT Reed Relays
Resistor
Chain 1
Relays may be connected
to the resistors using
internal wire jumpers
Resistor
Chain 2
16 x SPDT
Reed Relays
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R off
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R off
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW10
SW11
SW12
SW13
SW14
SW15
SW16
16 Bit
8 Bit
16 Bit
16 Bit
8 Bit
8 Bit
Programmable Resistor Module Overview
Individual
Resistor
Chains
Example
Series
Connection
40-290
40-291
