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PROGRAMMABLE RESISTOR MODULES 40-290/291
pickering
SECTION 1 - TECHNICAL SPECIFICATION
Programmable Resistor, 40-290/291
pickering
test
.com
Specifications
Power Requirements
+3.3 V
+5 V
+12 V
-12 V
0
740 mA (typ 400 mA)
0
0
Operating/Storage Conditions
Operating Conditions
Operating Temperature:
Humidity:
Altitude:
0 °C to +55 °C
Up to 90 % non-condensing
5000 m
Storage and Transport Conditions
Storage Temperature:
Humidity:
Altitude:
-20 °C to +75 °C
Up to 90 % non-condensing
15000 m
PXI & CompactPCI Compliance
The module is compliant with the PXI Specification 2.2.
Local Bus, Trigger Bus & Star Trigger are not implemented.
Uses a 33 MHz 32-bit backplane interface.
Safety & CE Compliance
All modules are fully CE compliant and meet
applicable EU directives: Low-voltage safety EN61010-
1:2010, EMC Immunity EN61326-1:2013, Emissions
EN55011:2009+A1:2010.
Mechanical Characteristics
Single slot 3U PXI (CompactPCI card).
3D models for all versions in a variety of popular file
formats are available on request.
Connectors
PXI bus via 32-bit P1/J1 backplane connector.
Resistor channel signals via front panel 68-pin female
micro-D connector. Each resistor has 4 wire connections
(Kelvin) so allowing elimination of wires and connectors in
high accuracy measurements.
Relay Type
The 40-290 & 40-291 are fitted with ruthenium sputtered
reed relays offering very long life with good low level
switching performance and excellent contact resistance
stability. Spare reed relays are built onto the circuit board
to allow easy maintenance with minimum downtime.
All reed relays are manufactured by our Relay Division:
pickeringrelay.com
Programmable Resistor Specification
Max Switch Voltage:
100 V*
Resolution:
0.5 Ω
† Accuracy of Fitted Resistor:
0.5 %
Residual Resistance, typical
(when chain is set to 0Ω):
1 Ω (8-bit)
2 Ω (16-bit)
Max Power: 0.5 to 10 Ω
10 to 100 Ω
100 Ω+
1 W
0.5 W
0.25 W
Operate Time:
Release Time:
<0.5 ms
<0.5 ms
Expected Life, Low power load:
Expected Life, Full power load:
>1x10
8
operations
>1x10
6
operations
* For full voltage rating, signal sources must be fully
isolated from mains supply and safety earth.
† Overall accuracy of module is a combination of the fitted
resistor accuracy and the relay/track resistance that
makes up the residual path resistance.
Switching Specification (16 x SPDT Reed Relays)
Switch Type:
Ruthenium Reed
Max Standoff Voltage:
100 V*
Max Power:
Max Switch Current:
Max Carry Current:
3 W
0.25 A
0.5 A
Initial Path Resistance, On:
Path Resistance, Off:
<400 mΩ
>1x10
9
Ω
Operate Time:
Release Time:
<0.5 ms
<0.5 ms
Expected Life, Low power load:
Expected Life, Full power load:
>1x10
8
operations
>1x10
6
operations
* For full voltage rating, signal sources must be fully
isolated from mains supply and safety earth.
40-290 Resistor Module
