Table of Contents
Advertisement
SECTION3
Seruice Infmnafion
Square Wave DC Level
1. Connect the Model 197A DMM to FCTN OTJT
(Figure 3-4).
2. Select the DCV function and auto-ranging on the
DMM.
3. Setup the Model 3930A as follows:
Factory Default (press SHIFT PEST)
SOURCE: EXT %
MODE: GATE
FCIWL
AMMD: 7.49vp-p
PHASE: +90°
4. Adjust R320 (SQ+) for a DMM reading of +3.7445V f
0.0055v.
5. Setup the Model 3930A as follows:
PHASE: -90°
6. Adjust R316 (SQ-) for a DMM reading of -3.7445Vf
0.0055v.
Square Wave Ihy
Cycle
1. Connect the PM 6645C counter A input to the FCTN
OUT jack, as shown in Figure 3-6.
2. Set the PM 6654C counter to the pulse width meas-
urement mode.
3. Setup the Model 3930A as follows:
Factory Default (press SHIFT PRST)
FREQ: 1OOHz
-
20VU-D
4. Adjust R308 (DUTY) for a counter reading of 5msec
kO.005msec.
Frequency Accuracy
1. Connect the PM 6654C counter A input to the FCTN
OUT jack (Figure 3-6).
2. Set the counter to the frequency measurement mode.
3. Setup the Model 3930A as follows:
Factory Default (press SHIFT PEST)
FREQ: lOOOkJ3z
k%!z%.20vp-p
:
4. Adjust the crystal oscillator trimmer for a counter
reading of lMH2 f 5Hz.
Frequency Response
1. Connect the Model 8920A EMS Voltmeter to the
FCTN OUT jack, as shown in Figure 3-7. Be sure to
use the 5OQ feed-through terminator as indicated.
2. Make sure the voltmeter dB and EEL modes are dis-
abled.
3. Setup the Model 3930A as follows:
Factory Default (press SHIFT PEST)
AMPTD: 3.74vp-p
4. Allow the voltmeter reading to settle, then enable dB
and EEL in that order.
5. Setup the Model 3930A as follows:
FREQ: 8OOkHz
6. Adjust C108' for an RMS voltmeter reading of
FClXk
A*
+O.b4dB f 0.03dB.
Model 3930A
Model PM 66646 Counter/Timer
?gure 3-6.
Connections to PM 6654C Counter
nce
3-8
Advertisement
Table of Contents
