TB 9-6625-100-24
NOTE
Frequency in 2 (d) above is entered in kHz (i.e. 100 Hz = 0.100
and 200 kHz = 200).
(3) Set frequency counter controls as listed in (a) through (e) below.
(a) FREQ A.
(b) DC Coupled.
(c) 1 MΩ Input.
(d) FILTER on.
(e) MEASUREMENT TIME, 1 sec.
(4) Frequency counter will indicate within the limits for the first value in table 4.
Table 4. Frequency Accuracy.
Frequency counter indication
TI Frequency (Hz)
Min (Hz)
Max (Hz)
12
11.9988
12.0012
100
99.9900
100.0100
1 k1
0.999900 k
1.00010 k
10 k
9.99900 k
10.0010 k
100 k
99.9900 k
100.010 k
200 k
199.980 k
200.020 k
1 Record measured value for use in paragraph 9 b below.
(5) Repeat technique of (2)(d) above for remaining frequencies in table 4. Frequency
counter will indicate within the limits of table 4.
b. Adjustments. No adjustments can be made.
9. Impedance Accuracy
a. Performance Check
(1) Connect equipment as shown in figure 1, connection B above.
(2) Set TI to factory preset condition by completing (a) and (b) below.
(a) FUNCTION (if necessary) to select ENTER.
(b) Press 2 = SHIFT SPECIAL 7.
(3) Place calibration resistor labeled OPEN in the test fixture.
(4) Perform TI open circuit compensation by completing (a) through (d) below.
(a) FUNCTION (if necessary) to select MEASURE.
(b) MEASURE MODE (if necessary) to select TRIGGERED.
(c) Press 1 6 9 3 = SHIFT OPEN. (GO indicator will light with "0" in the left
and right displays).
(d) Keep hands and objects at least 4 inches away from remote test fixture, then
press START button. (GO indicator extinguishes and lights again when complete).
(5) Remove calibration resistor labeled OPEN from the remote test fixture.
