Racal Instruments 1260 VXI, Инструкция по эксплуатации

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1260-21 User Manual
Module Operation 3-4 Racal Instruments
©
2005
descriptors for 1x2 switches on the 1260-21:
OPEN (@10(5))
Open channel 5 on the 1260-21
that has module address 10.
CLOSE (@10(5,7))
Close channels 5 and 7 on the
1260-21 that has module address
10.
CLOSE (@5(5:7))
Close channels 5 through 7,
inclusive, on the 1260-21 that has
module address 5.
Reply To The
MOD:LIST?
Command
The 1260-01T returns a reply to the MOD:LIST? command. This
reply is unique for each different 1260 series switch module. The
syntax for the reply is:
<module address> : <module-specific identification string>
The <module-specific identification string> for the 1260-21 is:
1260-21 12-CHANNEL SPDT 10A SWITCH
So, for a 1260-21 whose <module address> is set to 6, the reply to
this query would be:
6 : 1260-21 12-CHANNEL SPDT 10A SWITCH
Operating The
1260-21 in
Register-Based
Mode
In register-based mode, the 1260-21 is operated by directly writing
to control registers and reading from status registers on the 1260-
21 module. There are two control registers and two status registers
on the 1260-21 module. Relay Control Registers 0 control 8 1x2
switches. Relay Control Registers 1 control another four 1x2
switches. When a control register is written to, all channels
controlled by that register are operated simultaneously. Writing a
‘1’ to the register bit will activate the relay coil and put it into the
NO position. Writing a ‘0’ to the register bit will deactivate the relay
coil and put it back into the NC position. Default value for all
control registers is hex ‘00’ after reset.
The status registers contain the Read Back bits from the coil
voltage. The 1x2 switches require only one status bit each. Refer
to
Figure 3-3 for the relay order that comprises 1x2 switches.