Technical data

1260-37 User Manual Publication No. 980673-024 Rev. A
Installation Instructions 2-2 Astronics Test Systems
Module
Installation
Installation of the 1260-
37 Switching Module into a VXIbus
mainframe, including the setting of DIP switches, is described in
the Installation Section of the 1260 Series VXIbus Switching Cards
Manual. Configuration of the motherboard PCB and setting DIP
switches S1-5 and S1-6 are described in the following sections.
1260-37 ID Byte
There are two configurations for the 1260-
37 Signal
Multiplexer/Scanner circuit; two-wire and four-
wire. Each
configuration responds to different sets of values for <channel
number>. The set of values the 1260-37 responds to is controlled
by switch 5 on
DIP switch 51 on the main PCB. The switch
settings that correspond to the two configurations are as follows:
Configuration S1 Switch 5 S1 Switch 6
Four-wire Off Off
Two-wire On Off
Configuration
Jumpers
The 1260-37 Scanner/Multiplexer circuit i
s a user configurable
switching circuit. It may be configured to any one of eight different
configurations as shown below. The 1260-37 SPDT switch circuit
is not configurable.
1) Eight 1 x 6 two-wire scanner/multiplexers
2) Four 1 x 6 four-wire scanner/multiplexers
3) Four 1 x 12 two-wire scanner/multiplexers
4) Two 1 x 12 four-wire scanner/multiplexers
5) Two 1 x 24 two-wire scanner/multiplexers
6) One 1 x 24 four-wire scanner/multiplexers
7) One 1 x 48 two-wire scanner/multiplexers
8) One 1 x 96 one wire scanner/multiplexer
The 1260-
37 Scanner/Multiplexer circuit is shipped from the
factory in the 1 x 48 two-wire configuration. Table 2-1 gives the
information necessary to configure the module into the other
possible configurations. Note that the Scanner/ Multiplexer circuit
front panel connections are at J200 and J202 while the SPDT
switch connections are at J201 and J203.