TB 9-6625-2271-50
(7) Set calibrator frequency to 1 kHz.
(8) Press TI RATIO key. RATIO light will be extinguished.
(9) Press TI FILTERS LP 80 key then RATIO key to establish reference at 1 kHz.
(10) Set calibrator frequency to 75.99 kHz. TI will indicate >70.7 percent.
(11) Set calibrator frequency to 84.01 kHz. TI will indicate <70.7 percent.
(12) Set calibrator frequency to 1 kHz.
(13) Press TI RATIO key. RATIO light will be extinguished.
(14) Press TI FILTERS LP 220 key then RATIO key to establish reference at 1
kHz.
(15) Set calibrator frequency to 199.9 kHz. TI will indicate >70.7 percent.
(16) Set calibrator frequency to 240.1 kHz. TI will indicate <70.7 percent.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Connect TI OUTPUT HIGH to INPUT HIGH using short shielded cable.
(2) Connect calibrator OUTPUT HI and LO to TI INPUT LOW .
(3) Press keys and enter values using DATA ENTRY keys as listed in (a) through
(h) below:
(a) LCL INIT.
(b) INPUT FLOAT (assure illumination).
(c) SOURCE FREQ.
(d) 21 Hz.
(e) SOURCE LEVEL.
(f) 1 V.
(g) ANALYZER DIST.
(h) dB.
(4) Set calibrator for a 1 mV, 222 Hz output. If TI indication is not between -
59 and -61 dB, perform b below.
(5) Press TI SOURCE FREQ key and enter 1 kHz using DATA ENTRY keys. If
TI indication is not between -59 and -61 dB, perform b below.
(6) Repeat technique of (5) above using TI SOURCE FREQ settings and
indications listed in table 6.
