ACCEPTANCE TESTING
5-1-A-6
AM SCALE SHAPE
SPECIFICATION
Range: 0 to 99% in 0.1% steps
Accuracy: For carrier frequencies up to 1 GHz, ±4% of setting, ±1% depth.
Usable to 2.7 GHz (2031).
Usable to 5.4 GHz (2032).
TEST EQUIPMENT
Description Minimum specification Example
Modulation meter 1.5 MHz to 1 GHz IFR 2305 +
Accuracy: better than 1.1% distortion option
TEST PROCEDURES
C0332
RF
OUTPUT
UUT
Modulation Meter
RF
INPUT
➤
Fig. 5-1-A-5 AM scale shape test set-up
(1) Connect the test equipment as shown in Fig. 5-1-A-5.
(2) Set the UUT to [RF level] 0 dBm, [Carrier freq.] 100 MHz, then enter the
following:
[UTIL] [Mod'n mode] [Comp]
[SIG GEN] [AM] 1%
(3) Measure the AM on the modulation meter at the depths shown in Table 5-1-A-5.
Check that the measured AM depth is within specification.
(4) Set the UUT by entering the following:
[AM1 ON/OFF] [AM2] [Select Source] [Select internal]
[Internal F4] [SIG GEN] 1%
(5) Repeat (3) above.
Table 5-1-A-5 AM depths
AM depth (%)
1 10 31 34 37 39.1 39.4 39.7 40 70
2 20 32 35 38 39.2 39.5 39.8 50 80
5 30 33 36 39 39.3 39.6 39.9 60 85
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