ST1952 Operation Manual
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the reference value. This command is typically used to zero the display. For example, if the
instrument is displaying a 0.1Ω offset, sending this command and enabling Reference zeroes the
display.
This command is functional only if the instrument is on the specified measurement function.
Sending this command while in any other function causes an error. Also, if the latest reading is
overflowed or a reading has not been triggered, an error occurs when this command is sent.
6.3.9 FREQuency and PERiod subsystem
The commands in this subsystem are used to configure and control frequency as well as period
measurement function and are summarized in Table 6-9.
Table 6-9
FREQency and PERiod Subsystem Commands Summary
Command
Function Description
Default
:FREQuency
:THReshold
:VOLTage
:RANGe <n>
:RANGe?
:REFerence <n>
:STATe <b>
:STATe?
:ACQuire
:REFerence?
Path to configure frequency
Path to select the threshold voltage range:
Set the measurement range of voltage
Select threshold range (
0.1,1,10,100,750)
Query threshold range
Specify reference (0 to 1.0e6)
Enable or disable reference
Query state of reference
Use input signal as reference
Query reference value
1
0
OFF
:THReshold command
This command is used to set the range of frequency measurement.
:RANGe <n>
Command syntax:
:FREQuency:THReshold:VOLTage:RANGe <n> Set voltage threshold range.
:PERiod:THReshold:VOLTage:RANGe <n>
Set voltage threshold range.
Command parameter:
<n> =
0.1,1,10,100,750
Specify signal levels in volts (voltage threshold)
Query:
:RANGe?
Query maximum signal level.
Description:
These commands are used to specify the expected input level.
