Thermometer User Manual

Page 18
Table 12. Frequency Test
Input Reading
Step Frequency Level 61-633 61-635
1 360Hz 0.5Vp-p 359.86 to 360.14 359.86 to 360.14
2 3.6000KHz 0.5Vp-p 3.5986 to 3.6014 3.5986 to 3.6014
3 36.000KHz 0.5Vp-p 35.986 to 36.014 35.986 to 36.014
4 360.00KHz 0.5Vp-p 359.86 to 360.14 359.86 to 360.14
5 3.6000MHz 1.5Vp-p 3.5986 to 3.6014 3.5986 to 3.6014
Testing the Duty Factor Function
To verify the accuracy of the Meter’s Duty Factor function, do the following:
1. Connect the Calibrator to the VΩ and COM inputs on the Meter.
Note The accuracy of the Calibrator’s Duty function must be appropriate for the
specified accuracy of the Meter.
2. Set the rotary switch to Hz.
3. Press the blue button on the meter to toggle to %DF function.
4. Set the Function Generator for square wave voltage for steps 1-3 of Table 13.
(Frequency is about 1KHz)
5. Compare the reading on the Meter display with the display reading shown in Table 13.
6. If the display reading falls outside of the range shown in Table 13, the Meter does not
meet specification.
Table 13. Duty Factor Test
Input Readings
Step Duty (%) Level 61-633 61-635
1 20.0 5Vp-p 14.0 to 26.0 14.0 to 26.0
2 50.0 5Vp-p 44.0 to 56.0 44.0 to 56.0
3 77.0 5Vp-p 71.0 to 83.0 71.0 to 83.0
Testing the Temperature Function
To verify the accuracy of the Meter’s Temperature Function do the following:
1 Connect the calibrator to VΩ and via K-type wire and T-V adaptor
(Ideal 61-635 TC adapter)
Note: The T-V adaptor should be allowed to stabilize to the same room temperature as the
meter before beginning test.
2. Set the rotary switch to °C.
3 Set the Calibrator for inputs in Table 14.
4. Compare the reading on the Meter display with the display reading shown in Table 14.
5. If the display reading falls outside of the range shown in Table 14, the Meter does not
meet specification.
Table 14 Temperature Test
Input Readings
Step Temperature 61-633 61-635
1
-50.0°C
N.A -52.1 to -47.9.
2
-20.0°C
N.A -21.1 to -18.9
3
0.0 °C
N.A -1.1 to 1.1
4
20.0°C
N.A 18.9 to 21.1
5
50.0°C
N.A 48.9 to 51.1
6
100.0°C
N.A 98.9 to 101.1
7
500.0°C
N.A 498.9 to 501.1
8
1000°C
N.A 998.9 to 1001.1
Form Number TM61633-5 Rev 5 Dec 2006