Ceyear 4456 Series, User Manual

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Chapter XVIOscilloscope Probe (Option)
191
The P9550A probe is equipped with accessories for easy testing. Please be familiar with the description of
relevant accessories before use to make better use of this product.
Warning:
The maximum input voltage of theP9550A passive voltage probe is 300V
(DC+ACpk). Do not exceed this voltage in use. Otherwise, it will cause personal
hazard or injury or damage to the DUTs.
Probe front end:
Fully enclosed design for safer
use
BNC end: Connected to the oscilloscope
Compensation adjustment: For frequency
compensation in X10 state
Hook: Use a retractable probe to
make your measurements easier
and safer
Ground clamp: Use a crocodile-type ground
clamp to reliably ground the probe for safe
operation and correct signal reading
Adjustment rod: Adjust the
compensation of the probe
Color ring sleeve: Put the color ring sleeve on both ends of the probe
to easily distinguish the probes used in different channels
Automatic identification end:
Automatically identify the
probe and set the impedance
of the oscilloscope and the
probe attenuation
Fig. 16.4 Diagram of P9550A Probe Accessories
When the P9550A passive voltage probe is used, the input impedance of the oscilloscope is automatically set to
1M
Ω
, the probe type is automatically set to voltage, and the probe attenuation is automatically set to ×10. To
avoid the error caused by the probe connection, the probe should be connected to a probe calibration square wave
signal on the front panel of the oscilloscope, with about 1 kHz frequency and 3 Vpp amplitude, so as to keep flat
amplitude-frequency characteristics of the oscilloscope by adjusting the compensation capacitance of the probe.
Fig. 16.5 Schematic Diagram of Probe Compensation
16.2.2 Main Parameters of Probe
Over-compen
sation
Correct
compensation
Insufficient
compensation