OPTION 005 GMSK Bt 0.3
Annex A-44
Output frequency check
C0496
FREQ STD
IN/OUT
(rear)
UUT
2435
Counter
IN
➤
Fig. A-24 Frequency standard output test set-up
(1) Connect the test equipment as shown in Fig. A-24.
(2) Set the UUT as follows:
[UTIL] [Mod'n Mode] [GMSK]
[UTIL] [Freq Std] [Int 13 MHz]
(3) Ensure that the frequency measured on the counter is 13 MHz +3 Hz.
Frequency standard locking test
C0497
RF OUTPUT) FREQ STD
IN/OUT
(rear)
Signal Generator
UUT
➤
Fig. A-25 Frequency standard locking test set-up
(1) Set the UUT as follows:
[UTIL] [Mod'n Mode] [GMSK]
[UTIL] [Freq Std] [Ext 13 MHz]
(2) Ensure that UUT displays No 13 MHz Standard or VCXO Out of Lock.
(3) Connect the test equipment as shown in Fig. A-25.
(4) Set the signal generator as follows:
Carrier freq 13 MHz
RF level 13 dBm
(5) Ensure that the external standard error is removed.