Operating the Meter Using the Computer Interface

5

Computer Interface Command Set

Compare Commands and Queries

The commands in Table 5-15 cause the meter to determine whether a measurement is higher than, lower than, or within a specified range. These commands correspond to the COMP, HI, and LO buttons on the front panel.

Command

COMP

COMP?

COMPCLR

COMPHI <high value>

COMPLO <low value>

HOLDCLR

Table 5-15. Compare Commands and Queries

Description

Meter enters compare (COMP) function. Touch Hold is automatically turned on. (Touch Hold can be turned off with "HOLDCLR" command.)

Meter returns "Hl" if the last COMP measurement reading was above the compare range, "LO" if it was below it, "PASS" if within compare range, or "— " if a measurement has not completed.

Meter exits compare function (and Touch Hold if it is selected), and restores display to normal operation.

Sets "HI" compare (COMP) value to <high value>. <high value> can be a signed integer, signed real number without exponent, or signed real number with exponent.

Sets "LO" compare (COMP) value to <low value>. <low value> can be a signed integer, signed real number without exponent, or signed real number with exponent.

Meter exits Touch Hold and restores display to normal operation, but does not exit the compare function.

Trigger Configuration Commands

The commands in Table 5-16 set and return the trigger configuration.

Command

TRIGGER <type>

Table 5-16. Trigger Configuration Commands

Description

Sets the trigger configuration to <type>.

<type> corresponds to a number between 1 and 5 selected from Table 5-15A. If the <type> entered is not one of these numbers, an Execution Error is generated.

Type

1

2

3

4

5

Table 5-15A. Trigger Type

Trigger

Rear Trigger

 

 

Internal

Disabled

External

Disabled

External

Disabled

External

Enabled

External

Enabled

 

 

Settling Delay

Off

On

Off

On

TRIGGER?

Select a trigger type with the settling delay (type 3 or 5) enabled when the input signal is not stable before a measurement is triggered. Typical settling delays are provided in Table 4-4.

Returns the trigger <type> set by the TRIGGER command.

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Fluke 45 Trigger Configuration Commands, Compare Commands and Queries Description, Type 15A. Trigger Type Rear Trigger

45 specifications

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