CONFigure:FREQuency

CONFigure:FREQuency
CONFigure:PERiod

Syntax | Description | Parameters | Remarks | Return Format | Examples

Syntax

CONFigure:FREQuency [{<range>|AUTO|MIN|MAX|DEF}[,{<resolution>|MIN|MAX|DEF}],] (@<scan_list>)

CONFigure:PERiod [{<range>|AUTO|MIN|MAX|DEF}[,{<resolution>|MIN|MAX|DEF}],] (@<scan_list>)

Description

These commands configure the channels for frequency or period measurements, but they do not initiate the scan.

The CONFigure command does not place the instrument in the "wait-for-trigger" state. Use the INITiate or READ? command in conjunction with CONFigure to place the instrument in the "wait-for-trigger" state.

Used With:

• 34901A   20 Channel Multiplexer (2/4-wire) Module
• 34902A   16 Channel Multiplexer (2/4-wire) Module
• 34908A   40 Channel Single-Ended Multiplexer Module

Parameters

Name	Type	Range of Values	Default Value
<range>	Numeric	Expected value in Hz (frequency) or seconds (period). Valid values range from 3 Hz to 300 kHz, and their inverses (for period). For frequency and period measurements, this parameter is only used in conjunction with the <resolution> parameter to set the gate time. It is otherwise unnecessary for frequency and period measurements.	AUTO
<resolution>	Numeric	Desired resolution in Hz (frequency) or seconds (period).	0.000003 x Range (1 PLC)
<scan_list>	Scan List	One or more channels, as shown: (@310) - channel 10 on the module in slot 300. (@305:310) - channels 05 through 10 on the module in slot 300. (@202:207,209,302:308) - channels 02 through 07 and 09 on the module in slot 200 and channels 02 through 08 on the module in slot 300.	This is a required parameter.

Remarks

• When you specify a range of channels with this command, any channels that are invalid will be ignored (no error will be generated) but the first and last channel in the range must be valid for the selected function.

• If the input signal is greater than can be measured on the selected range (manual ranging), the instrument gives an overload indication: "±OVLD" from the front panel or "±9.9E+37" from the remote interface.
• The *RST command will clear the scan list and set all measurement parameters to their factory settings. The Instrument Preset (SYSTem:PRESet command) will not clear the scan list; however, this command will clear reading memory and all stored statistical data.

Examples

The following program segment configures the instrument for frequency measurements on channel 04 in slot 300. The READ? command places the instrument in the "wait-for-trigger" state, scans the channel once, and then sends the reading to reading memory and the instrument's output buffer. The default range (autorange) and resolution (fixed at 6½ digits) are used for the measurement.

CONF:FREQ (@304)
ROUT:SCAN (@304)
READ?

Typical Response: +1.32130000E+03

 

The following program segment configures the instrument for frequency measurements on channels 03 and 08 in slot 100. The INITiate command places the instrument in the "wait-for-trigger" state, scans the channels once, and stores the readings in memory. The FETCh? command transfers the readings from reading memory to the instrument's output buffer.  

CONF:FREQ 100,(@103,108)
ROUT:SCAN (@103,108)
INIT
FETC?

Typical Response: +4.27150000E+03,+1.32130000E+03

 

The following program segment configures channel 10 on the module in slot 300 for a frequency measurement. The READ? command places the instrument in the "wait-for-trigger" state, initiates a trigger, and then sends the reading to reading memory and the instrument's output buffer. The default range (autorange) and resolution (fixed at 6½ digits) are used for the measurement.

CONF:FREQ (@310)
READ?

Typical Response: +10.13240000E+03

See Also

CONFigure?

FETCh?

INITiate

MEASure:FREQuency?

MEASure:PERiod?

READ?

ROUTe:SCAN

[SENSe:]FREQuency:RANGe:LOWer

[SENSe:]FREQuency:VOLTage:RANGe:AUTO