ACCEPTANCE TESTING
6-B-3
ON/OFF ratio
C0262
UUT
RF
OUTPUT
INPUT
OUTPUT
➤
➤
2386/2380
Spectrum Analyzer and Display
Function Generator
PULSE
INPUT
Fig. 6-B-2 ON/OFF ratio test set-up
(1) Connect the test equipment as shown in Fig. 6-B-2.
(2) Set the UUT to
[Carrier Freq.]
11 MHz, (RF level) 0 dBm, and
[Pulse Mod].
(3) Set the function generator to give +5 VDC.
(4) Set the spectrum analyzer to 11 MHz, span/div 10 kHz, and, using the 'Peak Find' facility,
measure the amplitude of the carrier signal and record as (P1).
(5) Set the function generator to give 0 V DC.
(6) Measure the amplitude of the carrier signal and record as (P2). The difference between P1
and P2 must be greater than 70 dB.
(7) Repeat (3) to (6) above for the UUT and spectrum analyzer frequencies shown in
Table 6-B-1.
Table 6-B-1 ON/OFF ratio carrier frequencies
Carrier frequencies
11 MHz
675 MHz
1.349,999 GHz
111 MHz
1 GHz