The Keysight E1421B (formerly Agilent/HP) is a high-performance 6-slot, C-size VXIbus mainframe designed for compact automated test applications. Featuring a robust 450 W power supply, automatic backplane jumpering, and efficient positive-pressure cooling, it ensures reliable system integration and optimal module performance in demanding environments.

Specifications

General

ParameterValue
InterfacesVXIbus Backplane; external interfaces (GPIB, LAN, USB) dependent on the installed Slot 0 controller module
DisplayNone (LED status indicators for power supply rails and fan status)

Physical

ParameterValue
Power Supply100 - 240 VAC (nominal), 47 - 66 Hz, 450 W maximum usable power
Operating Temperature0 to +55 °C
Dimensions (W×H×D)425.5 mm × 221.5 mm × 574 mm
Weight15.5 kg

System Architecture & Capacity

ParameterValue
Number of Module Slots6
Compatible Module SizeVXI C-size
Backplane ComplianceVXIbus Specification Revision 1.4
Slot Pitch / Spacing30.48 mm (1.2 in)
Interrupt / Jumper ConfigurationAutomatic solid-state daisy-chain jumpering for IACK and LWORD

Backplane Electrical Specifications

ParameterValue
+5V Rail Maximum Current40 A
-5.2V Rail Maximum Current25 A
+12V Rail Maximum Current8 A
+24V Rail Maximum Current4 A
-2V Rail Maximum Current10 A

User Interface & Operation

ParameterValue
Power MonitoringFront-panel LEDs monitoring all 7 VXI power supply voltages

Physical Characteristics

ParameterValue
Cooling System TypePositive pressure, fan-forced air
Form Factor5U Rackmount (with optional rackmount adapters)

Environmental & Compliance

ParameterValue
Storage Temperature Range-40 °C to +75 °C
Operating Humidity Range65% RH
Safety CertificationsUL 1244, CSA C22.2, EN 61010-1
EMC Compliance StandardsCISPR 11, EN 55011, EN 50082-1

Power Distribution

ParameterValue
Total Usable DC Power450 W

Standards & Compliance

ParameterValue
VXIbus Specification ComplianceRevision 1.4

Technology

VXIbus

Applications

Automated Test Equipment (ATE) systems

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