HP E1343A User Manual page 39

Example: Making 2-Wire
Ohms Measurements by
Scanning
Example: Making 4-Wire
Ohms Measurements by
Scanning
Example: Making
Multiple Scans
Example: Making
Continuous Scans
Comments
38 Using the Relay Multiplexer Modules
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Use the same setup shown in the first program example in this section,
except change the commands in lines 10 and 40 to the following:
10 OUTPUT 722;"TRIG EXT;OHM"
40 OUTPUT 70914;"SCAN:MODE RES"
This command, when used with
SCAN < channel_list > commands, automatically closes the channels defined
in the channel list, and the AT and AT2 Tree Switches during scanning.
Use the SCAN:MODE FRES
channels defined in the SCAN <
measurement requires paired channel closure (e.g., channels 02 and 10),
which the command automatically performs. Change the commands in lines
10 and 40 to the following:
10 OUTPUT 722;"TRIG EXT;OHM"
40 OUTPUT 70914;"SCAN:MODE FRES"
This command, when used with the
SCAN < channel_list > commands, automatically closes the channels defined
in the channel list and the AT and BT Tree Switches during scanning.
The number
ARM:COUN <
the command to the first program example in this section, as follows:
OUTPUT 70914;"ARM:COUN 10"
OUTPUT 70914;"SCAN (@100:215)"
The INIT:CONT ON command selects continuous scanning cycles
( INIT:CONT OFF disables continuous scanning cycles). Add the command
to the first program example in this section, as follows:
OUTPUT 70914;"INIT:CONT ON"
OUTPUT 70914;"SCAN (@100:215)"
See Chapter 4 for more information on scanning.
Scanning Requirements of a Switchbox (in an HP Mainframe with an
HP Command Module). To scan modules in a switchbox, you must:
-- know the card numbers (see Chapter 1) of all the modules to be
scanned;
-- sequentially address the modules (e.g., Logical Address 112, 113,
114, etc.);
-- set lowest addressed module to a logical address that is a multiple of
8 (see the HP 75000 Series B Installation and Getting Started
Guide, or other appropriate manuals, for more information).
!Set multimeter to 2-wire ohms.
!Closes channel switches.
SCAN:PORT ABUS
command to automatically close the selected
channel_list > command. This type of
!Set multimeter to 4-wire ohms.
!Closes channel switches.
SCAN:PORT ABUS
command selects multiple scanning cycles. Add
>
!Enables 10 scanning cycles.
!Sets scan list.
!Enables continuous scanning
cycles.
!Sets scan list.
and
and
Chapter 3