ACCEPTANCE TESTING
7-29
Pulse modulation rise and fall time
UUT
PULSE
INPUT
RF
OUTPUT
OUTPUT
C3494
Function
Generator
Oscilloscope
Fig. 7-13 Pulse modulation rise and fall time test set-up
Test procedure
(1)
Connect the test equipment as shown in Fig. 7-13.
(2)
On the UUT set source A to:
[Carr
Freq]
50
[MHz]
[RF
Level]
+7
[dB]
[UTIL]
[Mod’n Mode] [Pulse Enab/Dis] [EXIT]
[SIG GEN]
[Pulse
ON/OFF]
(3)
Set the function generator to produce 10 kHz, 0 V to +5 V square wave.
(4)
Adjust the oscilloscope controls such that the rise time of the envelope can be measured.
(5)
Measure the rise time between the 10% to 90% points checking that it is within the
specification shown in
Table 7-46.
(6)
Repeat (4) to (5) for the fall time of the envelope.
