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Communications Section
3. Operation During Data Communication (RS-232C)
<Holding the Measured Values>
● Holding by Inputting a Command
• Display hold can be set by inputting the command “H1” from the computer.*1 When display hold is set,
the displayed data will not change and data output is only performed once for the data which was mea-
sured just before the command was input.*2
• While display hold is set, no measurement can be taken and thus no measurement data will be output.
• Input the command “H0” to the instrument from the PC. The instrument will be released from hold
mode, resume measurement and output measured data.
*1: If the command is input when no measurement data is present, the error code “E10” (command error) will be output. Measurement
data will not be present in the following circumstances:
a. After POWER switch is set to ON but before zero calibration is performed.
b. After zero calibration has been performed but before any measurements have been taken.
c. When the error message “NO SYNC. SIGNAL” is shown in the LCD display.
*2: If the measurement data output when display hold is set is not accepted within 0.5 seconds, the measurement data will be discarded
and the held measurement data cannot be output.
● Operating in Hold Mode
• While display hold is set, measurement data is not output. However, if measurement conditions are
changed by inputting commands from the computer, the new measurement data (recalculated according
to the new measurement conditions) will be output. *
3
• Even while display hold is set, the following information can be output:
a. Data recalled from memory using the command “Kxx” (xx is the memory channel from which data is
requested).
b. Status information requested using the command “Z”
c. Error messages related to input commands (“E3”, “E4”, “E5”, “E10”, “E11”, “E12”, or “E13”)
• If the command “I” is input while display hold is set, zero calibration will be performed and display hold
will be canceled.
*3: Measured data will not be output if the PC is not ready for data reception within 0.5 seconds after the instrument is ready to output
the measured data.
<Operation Just After Power-ON>
● Immediately after POWER switch is set to ON but before zero calibration has been performed, no measure-
ments can be taken and thus no measurement data will be output. However, the following information can be
output:
• Data recalled from memory using the command “Kxx” (xx is the memory channel from which data is
requested).
• Status information requested using the command “Z”
• Error messages related to input commands (“E4”, “E10”, “E11”, or “E12”)
• Error messages related to performing zero calibration (“E21”, “E29”, or “E30”)
• Error messages relating to connections (“E25” or “E26”)