Adjustments
Use the following procedures to make adjustments to the THDP and TMDP Series probes. (For probes with serial numbers C019999 and
below, see note and table that follow.) These procedures describe how to make adjustments to the specifications listed below.
Note: Only probes with serial numbers C020000 and above have internal adjustments. Probes with serial numbers C019999 and
below that require adjustments (other than of
fset zero) must be returned to Tektronix for service.
Table 13: THDP and TMDP Series probe adjustments
Specification Adjustment method used Probe serial number
Offset zero External; user probe controls All serial numbers
Gain accuracy Internal; adjustments on PCB Serial numbers C020000 and above
DC CMRR Internal; adjustments on PCB Serial numbers C020000 and above
LF compensation Internal; adjustments on PCB Serial numbers C020000 and above
AC CMRR Internal; adjustments on PCB Serial numbers C020000 and above
Note: The adjustments in the probes are preset at the factory for best overall performance. However
, you may follow these
procedures to check the probe characteristics and optimize them if necessary.
WARNING: These procedures require you to remove a reusable label from the back of the probe. Y
ou must replace the label
after you complete the probe adjustments. Failure to do so may subject the user to high voltages present in the probe during
measurements.
Figure 16: Probe serial number and adjustment locations
Adjustments
High Voltage Differential Probes THDP0100/0200 and TMDP0200 User Manual 51
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