2-13
IM 710105-03E
Making Preparations for Measurements
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App
Index
Specification of miniature passive probe (701946), after probe phase
compensation
On models with the /EX52, /EX54, /EX22, or /EX24 option, 701946 passive probes are
provided in place of standard supplied probes.
For details, see the manual that came with the probe.
Item
Specification
Overall probe length
1.3 m
Input impedance
10 MΩ ±1%
Input capacitance
Approx 9.5 pF
Attenuation ratio
10 : 1 ±2%
Bandwidth
DC to 500 MHz (not exceeding –3 dB)
Rise time
700 ps or less (typical*)
Maximum input voltage
400 Vrms
* Typical values are typical or mean values. They are not strictly guaranteed.
Precautions to Be Taken When Using Voltage Probes Other Than Those
Provided with the Instrument
• When measuring a signal including a frequency close to 500 MHz, use a probe with a
frequency range above 500 MHz.
• Measurement will only be correct if the attenuation ratio is set properly. Check the
attenuation ration of the probe that you are using and set it properly.
Setting the Probe Attenuation Ratio or Voltage-Current Conversion Factor
When using a probe not supported by the probe interface connector, set the DLM2000
attenuation ratio or voltage-current conversion factor to match the probe attenuation ratio
or voltage-current conversion factor. If this setting is not carried out, correct measurement
values will not be displayed.
Connecting a Probe Supported by the Probe Interface Connector
• If you connect a probe* supported by the probe interface connector to the DLM2000,
the probe type is automatically recognized, and the attenuation ratio set. Power is
supplied to the probe through the probe interface, and therefore it is not necessary to
connect the probe power cable to the probe power terminals.
• You can execute automatic zero adjustment on a current probe that is compatible with
the probe interface connector.
* For a list of compatible probes, see “Optional Accessories” on page vi.
2.4 Connecting the Probe
