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9.2 RS-232 BASICS, CONTINUED
The cable distances that can be used are dependent on both the speed of transmission
and the type of cable used. Reducing the data rate increases the distance available as
does low capacitance cable. If long distances are required use RS-232 line drivers.
These line drivers convert from RS-232 to other formats such as RS-485 or Fiber Optic
that are better suited to long distance data transmission. At the other end the data is
converted back to RS-232 format.
AF-232 as used by MAXPRO-Net PTZ communications is not the same as RS-232. Only
the signal levels are the same, the data format is incompatible with normal multiplexing
and packet switching methods. AF-232 can be used where the equipment supports RS-
232 signal levels but imposes no protocol & timing restrictions on the data. A typical
example of this would be an RS-232 link over Optical Fiber modems where the
documentation states only data rates between two baud rates, but no format or timing
information.
9.3
VCR CONNECTIONS USING THE RD9022
9.3.1
Cable Manufacture
When manufacturing cables the RJ-11 male connectors must both be on the same side
of the cable. This is the same standard used in telephone cables (which may be used if
necessary). The flat cable usually has a rib, colored line or marking on one side that can
be used as a reference.
The cable that connects between the RD9022 (previous version is the RD9005) and the
VCR is normally Male-to-Male. This is because most VCRs are terminated with a socket.
At some sites the VCRs are terminated to a plug and connect to the cable with a female-
to-female adapter. Care must be taken with these adapters as some reverse the
conductors internally, while others do not. Check for this with a meter and make the
cables appropriately.
9.4
SINGLE SYSTEM JUNCTIONS (SPLIT MATRICES)
This document is intended for MAXPRO SYSTEMS trained engineers. It is expected that
the reader is familiar with the use of the MAXPRO-Net SETMAX configuration software
and associated tools.
Purpose
To provide the low level details on how to configure Split Matrices with interconnections.
The steps involved will be outlined to the SETMAX field entry level.
Pre-reading
MAXPRO-Net System Commissioning Manual Section 3.7 (Networking and Trunking)
and the Network examples in Chapter 7.
Rev. C
9-3
HMXMU001018
10/06
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