Ultrak CRX-501 Installation And Operation Manual page 3

Control receiver
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Issue 1, Revision A - April 1995 -- Added Appendix A for installing a CRX-500
Series Receiver with Option B1 or Option B2 installed
Issue 1, Revision B - October 1995 - Added data and drawings for CRX-
502/220/X Control Receivers for 220 Vac pan and tilts
Issue 1, Revision C - November 1995 - Corrected LED indicators for the
expansion board
Issue 1, Revision D - November 1995 - Corrected Figure 3-2 to match changed
text in Revision C
Issue 1, Revision E - February 1996 - Added table for lens zoom, focus, and
common connections, changed Table 2-1 on page 2-23 to Table 2-2.
Issue 1, Revision F - April 1996 - Added Model CRX-510/220/X.
Issue 1, Revision G - April 1996 - Added CE Warning and Declaration (Note: As
of 1/1/97 this product does not meet CE requirements)
Issue 1, Revision H - August 1996 - updated installationd drawings 517584-1440
and 517588-1440.
Issue 1, Revision I – July 1997 – added note for addressing unit for controlling
auxiliary contacts and updated controller manual numbers.
Issue 1, Revision J – July 1997 – added cross-reference for current model
numbers
Issue 1, Revision K – August 1998 – added note for ground connection for pan
and tilt unit (ECR 11478) and changed coaxial cable distance for UCT option
from <1500 feet to <800 feet.

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Crx-502Crx-510Crx-520

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