MDO3000 Programmer Manual.pdf - 第263页
Commands Listed in Alphabetical Order CH<x>:PRObe: SIGnal This command specifies the input bypass setting of a T ekVPI probe attached t o channel <x>, where x is the channel number . The probe must support inp…
Commands Listed in Alphabetical Order
Syntax
CH<x>:PRObe:P
ROPDELay <NR3>
CH<x>:PRObe:PROPDELay?
Arguments
<NR3> is a floating point number that specifies the propagation time delay for the
connected probe.
Examples
CH1:PROBE:PROPDELAY 100E-12 sets the CH1 propagation delay to 100 ps.
CH1:PROBE:PROPDELAY? might return :CH1:PROBE:PROPDELAY 1.1E-9
indicating that the CH1 propagation delay is set to 1.1 ns.
CH<x>:PRObe:RECDESkew? (Query Only)
Returns the recommended deskew for the probe connected to the specified
channel.
Group
Vertical
Syntax
CH<x>:PRObe:RECDESkew?
CH<x>:PRObe:RESistance? (Query Only)
Returns the resistance factor of the probe attached to channel <x>, where x is the
channel number.
Group
Vertical
Syntax
CH<x>:PRObe:RESistance?
Examples
CH2:PRObe:RESistance? might return :CH2:PROBE:RESISTANCE
1.0000E+6
indicating that the input resistance of the probe attached to Channel 2
is 1 MΩ.
NOTE. This query will return 0.0 if no probe is attached or the attached probe
does not report the input resistance.
2-232 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
CH<x>:PRObe:
SIGnal
This command specifies the input bypass setting of a TekVPI probe attached to
channel <x>, where x is the channel number. The probe must support input bypass,
for example T
CP0001. This command is ignored if sent to an unsupported probe.
Group
Vertical
Syntax
CH<x>:PRObe:SIGnal {BYPass|PASS}
CH<x>:PRObe:SIGnal?
Arguments
BYPass sets the probe to Bypass mode.
PASS sets the probe to Pass mode.
CH<x>:PRObe:UNIts? (Query Only)
Returns a string describing the units of measure for the probe attached to channel
<x>, where x is the channel number.
NOTE. Use the command CH<x>:YUNits to set the probe type to “Voltage”
or “Current”.
Group
Vertical
Syntax
CH<x>:PRObe:UNIts?
Examples
CH4:PROBE:UNITS? might return :CH4:P ROBE:UNITS "V" indicating that the
units of measure for the probe attached to channel 4 are volts.
CH<x>:SCAle
This command specifies the vertical scaleforthechannelspecifiedby<x>,where
x is the channel number. This setting controls the vertical size of the acquisition
window as well as the display scale. The range and resolution of scale values
depends on the probe attached and any other external factors you have specified.
For a signal with constant amplitude, increasing the scale causes the waveform to
be displayed smaller. Decreasing the scale causes the waveform to be displayed
larger.
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-233
Commands Listed in Alphabetical Order
Group
Vertical
Syntax
CH<x>:SCAle <NR3>
CH<x>:SCAle?
Related Commands
CH<x>:OFFSet, CH<x>:POSition, REF<x>:VERTical:SCAle,
MATH[1]:VERTical:SCAle
Arguments
<NR3> is a floating point number that specifies the vertical channel scale in
units-per-division. The value entered here is truncated to three significant digits.
Examples
CH4:SCALE 100E-03 sets the channel 4 scale to 100 mV per division.
CH2:SCALE? might return :CH2:S CALE 1.0000 indicating that the current scale
setting of channel 2 is 1 V per division.
CH<x>:TERmination
Sets the connected-disconnected status of a 50 Ω resistor (or 75 Ω with
MDO3000 models) which may be connected between the specified channel's
coupled input and oscilloscope ground. The channel is specified by <x>. There is
also a corresponding query that requests the termination parameter and translates
this enumeration into one of the two float values.
NOTE. 75 Ω termination is not available on the MDO3104 or MDO3102 models.
Group
Vertical
Syntax
CH<x>:TERmination {FIFty|MEG|<NR3>}
CH<x>:TERmination?
Arguments
FIFty sets the channel <x> input resistance to 50 Ω.
MEG sets the channel <x> input resistance to 1 MΩ.
<NR3> is a floating point number that specifies the channel <x> input resistance
numerically.
Examples
CH4:TERMINATION 50.0E+0 establishes 50 Ω impedance on channel 1.
CH2:TERMINATION? might return :CH2:TERMIN ATION 50.0E+0 indicating
that channel 2 is set to 50 Ω impedance.
2-234 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual