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Understanding the Relay Driver Module
Using This Chapter
Scanning Channels
Setting Scan
Mode Operation
Using Scanning
Trigger Sources
This chapter gives guidelines to scan Relay Driver Module channels
and to use the Scan Complete bit. In addition, this chapter shows how the
instrument responds to special IEEE 488.2 commands and to the
SYStem:ERRor? command. The chapter contents are:
•
Scanning Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 47
•
Setting/Checking States . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 50
•
Example Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 51
This section shows several methods to control scanning channels for the
Relay Driver Module, including:
•
Setting Scan Mode Operation
•
Using Scanning Trigger Sources
•
Scanning With External Instruments
•
Using the Scan Complete Bit
For the Relay Driver Module, scanning channels consists of closing and
opening a set of channels, one channel at a time. Single-scan, multiple-scan
(2 to 32767), or continuous scanning modes are available. See Figure 4-1 for
a typical sequence to set Relay Driver Module scanning operation.
Note
Although [ROUTe:]SCAN:MODE NONE|VOLT|RES is accepted by the
Relay Driver Module, this command has no effect on Relay Driver Module
operation. You can use [ROUTe:]SCAN:MODE? to query the scanning
mode (NONE, VOLT, or RES) of the Relay Driver Module.
The TRIG:SOUR command specifies the source to advance the scan. You
can use the TRIG command to advance the scan when TRIG:SOUR BUS
or TRIG:SOUR HOLD is set. Figure 4-2 shows scanning trigger sources.
Understanding the Relay Driver Module
Chapter 4
47
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