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7-74
IM AQ6370C-17EN
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:R
POSition
Function
Sets/queries the position of the reference level
of the main scale of the level axis.
Syntax
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
RPOSition<wsp><integer>[DIV]
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
RPOSition?
<integer> = Position of the reference level
Example
:DISPLAY:TRACE:Y1:RPOSITION 10DIV
:DISPLAY:TRACE:Y1:RPOSITION? -> 10
Explanation • If a value greater than the number of display
divisions of the level axis is specified for the
position of the reference level, the position of
this level is treated as the top of the scale.
• This is a sequential command.
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:S
PACing
Function
Sets/queries the scale mode of the main scale
of the level axis.
Syntax
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
SPACing<wsp>LOGarighmic|LINear|0|1
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
SPACing?
LOGarithmic = LOG scale
LINear = Linear scale
Response 0 = LOGarithmic, 1 = LINear
Example
:DISPLAY:TRACE:Y1:SPACING LINIER
:DISPLAY:TRACE:Y1:SPACING? -> 1
Explanation This is a sequential command.
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:U
NIT
Function
Sets/queries the units of the main scale of the
level axis.
Syntax
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
UNIT<wsp><unit>
:DISPlay[:WINDow]:TRACe:Y1[:SCALe]:
UNIT?
DBM = dBm
W = W
DBM/NM = dBm/nm or dBm/THz
W/NM = W/nm or W/THz
Response 0 = dBm
1 = W
2 = DBM/NM
3 = W/NM
Example
:DISPLAY:TRACE:Y1:UNIT DBM/NM
:DISPLAY:TRACE:Y1:UNIT? -> 2
Explanation • For the AQ6375, the parameters cannot
be set when in Wavenumber mode.
Query commands function even when in
Wavenumber mode.
• This is a sequential command.
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:A
UTO
Function
Sets/queries the automatic setting function of
the sub scale of the level axis.
Syntax
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
AUTO<wsp>OFF|ON|0|1
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
AUTO?
Response 0 = OFF, 1 = ON
Example
:DISPLAY:TRACE:Y2:AUTO ON
:DISPLAY:TRACE:Y2:AUTO? -> 1
Explanation This is a sequential command.
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:L
ENGth
Function
Sets/queries the parameter of the optical fiber
length used when the unit of the subscale of the
level axis is dB/km.
Syntax
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
LENGth<wsp><NRf>[KM]
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
LENGth?
<NRf> = Length of optical fiber [km]
Example
:DISPLAY:TRACE:Y2:LENGTH 99.999KM
:DISPLAY:TRACE:Y2:LENGTH?->
+9.99001
Explanation • When the unit of the subscale is set to other
than “dB/km”, an execution error occurs.
• This is a sequential command.
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:O
LEVel
Function
Sets/queries the offset level of the sub scale of
the level axis.
Syntax
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
OLEVel<wsp><NRf>[DB|DB/KM]
:DISPlay[:WINDow]:TRACe:Y2[:SCALe]:
OLEVel?
<NRf> = Offset level [dB|dB/km]
Example
:DISPLAY:TRACE:Y2:OLEVEL 10DB/KM
:DISPLAY:TRACE:Y2:OLEVEL? ->
+1.00001
Explanation • When the unit of the subscale is set to other
than “dB” or “dB/km”, an execution error
occurs.
• If the unit is not specified in the parameter, dB
is set if the subscale of the level axis is in the
dB mode or dB/km is set if it is in the dB/km
mode.
• If a unit different from the current set unit
(
:DISPlay[:WINDow]:TRACe:Y2[:SCA
Le]:UNIT
) of the subscale is specified, an
execution error occurs.
• This is a sequential command.
7.6 Instrument-Specific Commands