TB 9-6625-2296-24
(7) Press Ret (F5) (Return), MODE RCVR (Receiver Display), SHIFT, and Y
(Backup Cal Data ? y/n) keys and repeat paragraph 23 a above.
24. Frequency Error Meter and RF Counter
a. Performance Check
(1) Press the key sequence listed in (a) through (f) below:
(a) MODE MTRS ..........................
Meters Menu
(b) AUX (F6) ..................................
Auxiliary
(c) MEMORY RCL .......................
Recall
(d) FIELD SELECT ..................
Highlight 10. Factory Defaults
(e) DATA ENTRY ENTER ..........
Factory Defaults recall
NOTE
Assure highlighted area indicates YES before proceeding.
(f) DATA ENTRY ENTER ..........
Factory Defaults restored
(2) Press MODE RCVR (Receiver Display), Freq (F1) (Frequency), DATA ENTRY
1, and M (1 MHz), and (F3) T/R keys.
(3) Connect frequency counter 10 MHZ OUT to function generator 10 MHz In.
(4) Connect function generator OUTPUT to TI T/R and frequency counter A input.
(5) Press MODE MTRS key (Meters Menu) and DATA ENTRY 2 key (Freq Error
Meter/Freq Meter).
(6) Set function generator for a 1 MHz, 1 V p-p output.
1.000000 MHz.
(8) Frequency counter will indicate 1 MHz 0.5 Hz. TI FREQ ERR display will
indicate within 0.5 Hz.
1.000020 MHz.
(10) Frequency counter will indicate 1.000020 MHz 0.5 Hz. TI FREQ ERR display
will indicate between +19.5 and +20.5 Hz.
0.999980 MHz.
(12) Frequency counter will indicate 0.999980 MHz 0.5 Hz. TI FREQ ERR display
will indicate between -19.5 and -20.5 Hz.
(13) Disconnect function generator from frequency counter and TI.
(14) Connect frequency counter 10 MHz OUT to signal generator external reference
input connector (rear panel).