![background image](http://html2.mh-extra.com/html/racal-instruments/1257/1257_manual_3121580018.webp)
1257 User Manual
EADS North America Defense
Introduction 1-1
Test and Services, Inc.
©
2001
Chapter 1
INTRODUCTION
Overview
The 1257 Switching System is a high-performance switching and
control system in a compact 4U, 5U, or 6U rack-mountable
package. The 1257 is designed to accept removable microwave
and optical switching drawers customized to particular
applications. The 1257 has the following capabilities:
•
Sources 150W at 12V
•
240 controllable channels
•
TTL, CMOS, or 2A open drain control signals
Figure 1-1, 1257 Switching System