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Using the Relay Multiplexer Modules
Using This Chapter
Multiplexer Commands
ARM:COUN <number>
INIT[:IMM]
INIT:CONT 1|0|ON|OFF
[ROUT:]CLOS <channel_list>
[ROUT:]CLOS? <channel_list>
[ROUT:]OPEN <channel_list>
[ROUT:]SCAN <channel_list>
[ROUT:]SCAN:MODE FRES
[ROUT:]SCAN:PORT ABUS
NOTE: The commands with brackets ([ ]) are implied and are not shown in this chapter
Chapter 3
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This chapter uses typical examples to show how to use the 16-Channel Relay
and 16-Channel Thermocouple Relay Multiplexer Modules. Refer to
Chapter 4 ("Understanding the Relay Multiplexer Modules") for more
information. This chapter contains the following sections:
•
Multiplexer Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 31
•
Connecting Switchbox Channels to Common . . . . . . . . . . . page 32
•
Connecting Switchbox Channels to Tree Terminals for Making
Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 34
•
Scanning a Range of Switchbox Channels . . . . . . . . . . . . . . page 36
•
Measuring Temperature Using Thermocouples (HP E1344A/47A
Modules Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 39
Table 3-1. Multiplexer Commands in Chapter 3
Command
Selects multiple scanning cycles.
Starts scanning process; use the [ROUT:]SCAN command
to select channels for scanning.
Enables/disables continuous scanning cycles.
Closes all channels in channel list.
Queries mainframe for channel closure.
Opens all channels in channel list.
Closes all channels in channel list one at a time; previous
channel opens before next channel closes.
Automatically closes paired channel relays (e.g., channels
01 and 09) during 4-wire ohms measurements and
scanning.
Automatically closes the tree switches while scanning.
Description
Using the Relay Multiplexer Modules
Chapter 3
31
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