Common Commands - YOKOGAWA AQ7277 User Manual

Remote otdr communication interface
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4.2

Common Commands

*CLS(Clear Status)
Function Clears all event status registers, the summary
of which is reflected in the status byte register.
Syntax
*CLS
Example
*CLS
Description • Clears all queues, with the exception of the
output queue, and all event registers, with the
exception of the MAV summary message.
• After executing this command, OCIS (Operation
Complete Command Idle State) and OQIS
(Operation Complete Query Idle State) are
brought about.
*ESE(Standard Event Status Enable)
Function Sets/queries the standard event enable register.
Syntax
*ESE<wsp><integer>
*ESE?
<integer> = 0 to 255
Example
*ESE 251
*ESE? -> 251
Description • An item having had its bit set becomes enabled.
• R esets to the default value in the following
cases:
When power is ON
When "0" is set
• The set value remains the same in the following
cases:
*RST
*CLS
Device clear (DCL, SDC)
• The default is 0.
*ESR?(Standard Event Status Register)
Function Queries the standard event status register and
simultaneously clears it.
Syntax
*ESR?
Example
*ESR? -> 251
Description The return value of this query is not affected by
ESE (Event Status Enable Register).
4-4
*IDN? (Identification)
Function Queries the instrument type and firmware version.
Syntax
*IDN?
Example
*IDN? -> YOKOGAWA,AQ7277-B01,
SN123456789,F1.00
SN123456789:
(9 digit string)
F1.00:Firmware version
Description Outputs 4 field data delimited by a comma.
Field 1: Manufacturer "YOKOGAWA"
Field 2: Model "AQ7277-B01"
Field 3: Instrument serial number "SN123456789"
Field 4: Software version "F1.00"
*RST (Reset)
Function Executes a device reset to return the instrument to
the known (default) status.
Syntax
*RST
Example
*RST
Description • Stops operation being processed and returns
the instrument to the known set value (default
value) immediately.
• This unit's parameters are cleared.
• The following items will remain the same.Output
queue
SRE
ESE
Calibration data affecting the instrument's
specifications
*SRE(Service Request Enable)
Function Sets/queries the service request enable register.
Syntax
*SRE <wsp><integer>
*SRE?
<integer> = 0 to 255
Example
*SRE
250
*SRE? -> 250
Description • An item having had its bit set becomes enabled.
• Resets to the default value in the following
cases:
When power is ON
When "0" is set
• The set value remains the same in the following
cases:
*RST
*CLS
Device clear (DCL, SDC)
• The default is 0.
Serial number
IM AQ7277-17EN

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