1255A
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EADS North America Test and Services Racal Instruments™ 1255A MATURE Enhanced Optical and Microwave GPIB Switching System The Racal Instruments™ 1255A Switch System provides four slots for VXIbus C-Sized 1260-Series switch modules. It contains all the necessary interfaces for developing a comprehensive switch system, while significantly reducing cost with the elimination of mainframes and controllers. Key Features Product Information • Non-Volatile Memory: stores relay configurations for fast, easy setup • Maximizes switch density GPIB and RS-232 Control • Reduces ATE switching cost The 1255A comes complete with both an internal IEEE-488 and RS-232 interface. The included VXIplug&play compliant drivers make it an easy addition to any system. The 1255A additionally provides a message-based interface that controls multiple 1260-Series switch cards via the VXI local bus. • Power-Up Recall: automatically recalls a complete system configuration at power-up • Four VXIbus C-sized switch card capacity (1260 Series) • Built-in IEEE-488 and RS232 controllers • VXIplug&play compatible • Ideal for optical and microwave switching systems 1260-Series Switch Family Compatibility As with all 1260 Series switches, the local bus is used to transmit control signals from the internal controller to all 1260 cards in the chassis. The 1255A will support the entire line of Racal Instruments switch modules with signals from DC to light. The system also provides an upgradeable path to a full VXIbus system, if ever a larger ATE system capability is needed. Switch modules can be of mixed or dedicated signal type. An excellent selection of 1x2, 1x4, 1x8, and 2x2 switches are available. • Relay Monitoring: provides confidence checking of all relays • Scan Mode: provides synchronous scanning of multiple test points • External Trigger: allows external device to trigger switching operations Easy Maintenance Features You can maintain the 1255A with ease. A pluggable power supply and easy-to-clean fan filter simplify maintenance. Accessories and Options Rack mount ears and blanking plates (3) are included with the chassis The unit can be rack mounted with either the annunciator panel or the switching modules facing the front. The 1255A is part of our extensive family of VXIbus switching systems, which offers modules in configurations ranging from matrices to multiplexers, and signal type from DC to Microwave. Extensive Software Features The 1255A includes powerful software features such as: • Self Test: executed automatically at power-up; ensures that CPU, memory, and switching module handshaking are functioning correctly ECO# 2010-EADSTS-12-13-5-MU. Uncontrolled Unclassified Information (“UUI”). This documentation does not contain ITAR-controlled data within the definition of the ITAR and has been reviewed and approved for release to non-US persons. EADS North America Proprietary Copyright © 2011

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EADS North America Test and Services Racal Instruments™ 1255A (Mature) Note: The EADS North America Test and Services policy is one of continuous develop- ment and improvement. Consequently, the equipment may vary in detail from the descrip- tion and specifications in this publication. Electrical Specifications Host Computer Interface Front Panel Annunciators • FAIL: Self-test failure • ADDR: 1255A addressed by host • Microsoft Win32® application program- ming interface-based \/X\plug&play compatible disk shipped with instrument contains: LabWindows™/CVI driver • Executable Soft Front Panel...

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