. . . . .
ROUTINE MAINTENANCE
Low Temperature Verification
TP04300 Series Interface & Applications Manual 5-15
26 Use an external Resistance Temperature Detector (RTD) Simulator (or use a
decade resistance box) accurate to .01% of setting, with a range from 10Ω to
1,111.110Ω, as the input to the System, rather than allowing the DUT to
control the System, as follows; for RTD connector wiring, see below:
43-RTD-pins.jpg
27 Set the RTD Simulator output for 76.330Ω (which is -60.0 °C on the System).
28 Insert the RTD Simulator male plug into the “DUT RTD/Diode” sensor port on
the System rear I/O pane
29 Access the Setup Screen and
a) set "DUT Sensor" to "RTD," and
b) note that the System defaults to "DUT Mode: Air." If System was preset to
"DUT Mode: DUT," then be certain to reset "DUT Mode: Air" to prevent
heater damage.
30 This is NOT doing a DUT Mode test setup, where the DUT controls
temperature: it is a DUT sensor Verification setup, which procedure will be
driven by the RTD Simulator output, interfaced as given above.
31 Allow the System temperature to stabilize, read the DUT temperature displayed
on the System, and record the System DUT temperature in the Low
Temperature Verification (page 5-13).
32 Compare the RTD Simulator temperature setpoint value to the System
displayed DUT temperature.
If the difference between the Simulator and
System DUT values is greater than -60.0 ±1.0 °C, then recalibrate the
System
as given in Calibration (page 5-20).
33 Proceed to verify Diode, or to
High Temperature Verification, page 5-17.
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