Operating the Meter Using the Computer Interface

5

Computer Interface Command Set

Range and Measurement Rate Commands and Queries

The commands in Table 5-13 relate to ranging and measurement rates (i.e., readings/ second). In the autorange mode, the meter automatically selects a range for each reading; in the manual range mode, the user selects a fixed range.

Command

AUTO

AUTO?

FIXED

RANGE <range>

Table 5-13. Range and Measurement Rate Commands and Queries

Description

Causes the meter to enter the autoranging mode on the primary display. If the autorange mode cannot be selected (e.g., if REL, dB, MN MX, or diode/continuity test is selected), an Execution Error is generated.

Causes meter to return "1" if it is in autorange, or "0" if it is not.

Causes the meter to exit autoranging on the primary display and enter manual ranging. The present range becomes the selected range.

Sets the primary display to the range designated by <range>. <range> is a number between 1 and 7 that corresponds to a range shown in Tables 5-12A and 5-12B.

Table 5-13A. Ranges at Fast & Medium Measurement Rate

Range Value

1

2

3

4

5

6

7

Voltage

Range

300mV

3 V

30V 300 V

1000 V dc*

ERROR

ERROR

Ohms Range

300

3 k

30 k

300k3 M

30M

300M

Current Range

30mA 100 mA

10 A

ERROR ERROR ERROR ERROR

Frequency

Range

1000 Hz

10kHz 100 kHz

1000 kHz

1MHz

ERROR ERROR

* 1000 V dc, 750 V ac

Table 5-13B. Ranges at Slow Measurement Rate

Range

Voltage

Value

Range

 

 

1100 mV

21000 mV

310 V

4100 V

51000 V dc*

6ERROR

7ERROR

*1000 V dc, 750 V ac

Ohms Range

100

1000

10k

100k

1000 k

10M

100M

Current Range

10mA 100 mA

10 A

ERROR ERROR ERROR ERROR

Frequency

Range

1000 Hz

10kHz 100 kHz

1000 kHz

1MHz

ERROR ERROR

5-25

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Fluke 45 user manual Range and Measurement Rate Commands and Queries, Ohms Range, Current Range, Frequency Range

45 specifications

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