Ceyear 4456 Series, User Manual

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Chapter XVIOscilloscope Probe (Option)
193
Attenuation ratio switch:
× 1 and × 10 manual switch
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
Fig. 16.7 Diagram of P9551 Probe Accessories
When the P9551 passive voltage probe is used, the input impedance of the oscilloscope is set to 1M
Ω
and the
probe type is set to voltage. When the attenuation ratio switch on the P9551 front end is set to ×1, the probe
attenuation of the oscilloscope end is set to ×1. When the attenuation ratio switch on the P9551 front end is set to
×10, the probe attenuation of the oscilloscope end is set to ×10. When the probe attenuation of the oscilloscope is
set to ×10, the probe should be connected to a probe calibration square wave signal on the front panel of the
oscilloscope in order to avoid the error caused by the probe connection 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. 16.8 Schematic Diagram of Probe Compensation
Warning:
The maximum input voltage of the P9551 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.
16.3.2 Main Parameters of Probe
The main parameters of the P9551 probe are shown in the table below.
Over-compen
sation
Correct
compensation
Insufficient
compensation