MDO3000 Programmer Manual.pdf - 第250页
Commands Listed in A lphabetical Order Syntax CH<x>? CH<x>:AMPSVIA VOL T s:ENAble This command specifies the state of the amps via volts feature f or the specifi ed channel. This feature supports measuring curr…
Commands Listed in Alphabetical Order
Related Commands
*CAL?, CALibra
te:RESults:SPC?, CALibrate:INTERNal:STARt,
CALibrate:RF:STATus?
CALibrate:RF:STARt (No Query Form)
This command is identical to CALIBRATE:RF.
NOTE. Disconnect or otherwise remove all input signals prior to starting
self-calibration. The self-calibration can take several minutes to complete .
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
Calibration and Diagnostic
Syntax
CALibrate:RF:STARt
CALibrate:RF:STATus? (Query Only)
This query returns the stat
us of the last RF calibration.
Conditions
MDO3000, MDO4000/B, or MDO4000C mo
dels with option SA3 or SA6 only.
Group
Calibration and Diagnostic
Syntax
CALibrate:RF:STATus?
Related Commands
CALibrate:RF:STARt
Examples
CAL:RF:STAT? might return PASS.
CH<x>? (Query Only)
Returns the vertical parameters for channel <x>, where x is the channel number
(1–4).
Group
Vertical
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-219
Commands Listed in Alphabetical Order
Syntax
CH<x>?
CH<x>:AMPSVIAVOLTs:ENAble
This command specifies the state of the amps via volts feature for the specified
channel. This feature supports measuring current via the voltage drop across a
resistor (1–4).
Group
Vertical
Syntax
CH<x>:AMPSVIAVOLTs:ENAble {<NR1>|OFF|ON}
CH<x>:AMPSVIAVOLTs:ENAble?
Arguments
OFF sets the amps via volts function for channel <x> to off.
ON sets the amps via volts function for channel <x> to on.
<NR1> = 0 sets the amps via volts function to off. Any other value sets the
functiontoon.
Examples
CH1:AMSVIAVOLTS:ENABLE ON turns on the amps via volts feature for
channel 1.
CH<x>:AMPSVIAVOLTs:FACtor
This command specifies the amps via volts factor for the specified channel (1–4).
Group
Vertical
Syntax
CH<x>:AMPSVIAVOLTs:FACtor <NR3>
CH<x>:AMPSVIAVOLTs:FACtor?
Arguments
<NR3> is a double-precision ASCII string that represents the amps via volts factor.
Examples
CH1:AMPSVIAVOLTS:FACTOR 15.5 sets the amps via volts factor for channel 1
to 15.5.
2-220 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
CH<x>:BANdwi
dth
This command specifies the selectable low-pass bandwidth limit filter for channel
<x>, where x is the channel number (1–4).
Available bandwidth limits vary by model, and are also influenced by attached
probes. Furthermore, some oscilloscope models support options to increase
the analog bandwidth. The presence of those options also affects the available
bandwidth limits.
To see what the available bandwidth limits are, on the UI, push the relevant
channel's front panel button and the push the Bandwidth lower menu button, and
see what bandwidths are listed in the side menu.
Group
Vertical
Syntax
CH<x>:BANdwidth {FULl|<NR3>}
CH<x>:BANdwidth?
Arguments
FULl disables any optional bandwidth limiting. The specified channel operates
at its maximum attainable bandwidth.
<NR3> is a double-precision ASCII string. The oscilloscope rounds this value to
an available bandwidth using geometric rounding, and then uses this value to
set the upper bandwidth limit.
Examples
CH1:BANDWIDTH 20E6 sets the bandwidth of channel 1 to 20 MHz.
CH<x>:COUPling
This command specifies the input attenuator coupling setting for channel <x>,
where x is the channel number (1–4).
Group
Vertical
Syntax
CH<x>:COUPling {AC|DC|DCREJect}
CH<x>:COUPling?
Arguments
AC sets channel <x> to AC coupling.
DC sets channel <x> to DC coupling.
DCREJect sets channel <x> to DC Reject coupling when a probe that supports
DC Reject coupling is attached. Attempting to set the coupling to DCREJect for a
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-221