Revision C 170 Series Monitor 7-25
2000947-004
Serviceable Assemblies: Tocotransducer Calibration
Trimline Tocotransducers
The Corometrics Trimline Tocotransducer must be calibrated using the following
procedure for use with the 170 Series Monitor.
Equipment Required
Digital voltmeter: DM501 or equivalent with x1 probe or leads
Common Mode Rejection (CMR) Test Jack (Refer to Figure 7-7 and Table
7-8.)
Calibrated 170 Series Monitor
Screwdriver or potentiometer adjustment tool
52.5 gram weight (cat. no. 13131AA)
Sealing tape (cat. no. 11043AA)
Torque seal
IMPORTANT
WEIGHT TYPE—The weight (cat. no. 13131AA) is designed
specifically for testing Trimline tocotransducers. The weight’s
bottom lip fits over the transducer’s button.
Procedure
During this procedure, refer to Figure 7-8 for the location of potentiometers in the
Trimline tocotransducer.
Figure 7-8. Trimline Tocotransducer Potentiometer Locations
CW
CW +
CW
GAIN
ZERO CTR
ZERO TRIM
CW
CW +
CW
GAIN
ZERO CTR
ZERO TRIM
Loop Style
Button-Top Style
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