TB 9-6625-2271-50
(3) Adjust frequency counter controls for a stable display. If frequency counter
indication is not between 21.110 and 21.112 Hz, perform b below.
NOTE
Values in parenthesis are for model 1121.
(4) Enter 322.22 Hz using DATA ENTRY keys. Frequency counter will indicate
between 322.2068 (322.2065) and 322.2332 (322.2335) Hz.
(5) Repeat technique of (4) above using TI SOURCE FREQ and frequency counter
indications listed in table 9.
Frequency counter indications (Hz)
Test instrument
1120/S-10
1121
SOURCE FREQ
Min
Max
Min
Max
(Hz)
433.33
433.3157
433.3443
433.3152
433.3448
5444.4
5444.246
5444.554
5444.24
5444.56
6555.5
6554.434
6556.566
6554.428
6556.572
76666
76664.23
76667.77
76664.16
76667.84
87777
87775.12
87778.88
87775.03
87778.97
98888
98886.01
98889.99
98885.91
98890.09
99999
99997.0
100001.0
99996.9
100001.1
140000
139997.6
140002.4
139997.5
140002.5
b. Adjustments
(1) Connect time/frequency generator OUTPUT 10 MHz to TI rear panel X
CLOCK input.
(2) For 1120-S/10 perform (a) below, for 1121 perform (b) below.
(a) Remove top cover and set A4S1 switch positions 7 and 8 (fig. 5) to open
(down) and press LCL INIT key.
(b) Press SPCL 35, and ENTER.
CHANGE 1 15
