P6245 Instruction Manual
4- 1
Theory of Operation
There are no user replaceable parts within the probe or the
compensation box; however, this theory of operation is provided to
assist you in isolating failures to either the probe or the host
oscilloscope. Refer to Figure 4--1 for the probe’s simplified
schematic.
Offset
Gain
Offset
Zero
Offset Ampifier
EEPROM
Offset to probe
Probe-Tip
Ampifier
Signal Out
Probe Tip
±
1 V Offset
Probe ID Out
+5 V
--5 V
Ground
Probe
Cable
TEKPROBE
Interface
Probe Head
Compensation Box
Oscilloscope
Clock In
+5
--5
Figure 4- 1: P6245 Simplified Schematic Diagram
Probe Head and Cable Assembly
The probe head assembly contains an active amplifier circuit that
buffers and amplifies the input signal. The amplifier receives power
and an offset level from the compensation box assembly via the
cable assembly.
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