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.
Probe Head
Probe Tip
Offset to probe
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.
P6245 Instruction Manual
Compensation Box
Probe-Tip
Ampifier
EEPROM
Offset Ampifier
Probe
Cable
Offset
Zero
+5
- - 5
Offset
Gain
TEKPROBE
Interface
Oscilloscope
Signal Out
Probe ID Out
Clock In
±1 V Offset
+5 V
- - 5 V
Ground
4- 1