ACCEPTANCE TESTING
6-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
(2051T)
.
Usable to 5.4 GHz
(2052T)
.
Test equipment
Description Minimum
specification Example
Modulation meter
1.5 MHz to 1 GHz
Accuracy: better than 1.1%
IFR 2305 +
distortion option
Test procedures
C0332
RF
OUTPUT
UUT
Modulation Meter
RF
INPUT
➤
Fig. 6-A-5 AM scale shape test set-up
(1) Connect the test equipment as shown in Fig. 6-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 6-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 6-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