HP 5004A, Operating And Service Manual

Page: 28 / 74

4-8. NEGATIVE PULSE PERFORMANCE 'TEST
4-9. With test equipment connected as in Figure 4-3, proceed as follows:
a. Set pulse generator to output a negative-going pulse.
b. Adjust pulse generator to give waveform at probe tip as shown in Figure 4-3, with a
repetition rate of one-pulse-per-second. Probe indicator should flash off approximately
once per second.
c. Disconnect test equipment.
61 04A
POWER
SUPPLY
\
PULSE
\
I
GENERATOR
I
LEADS SHORT
Figure
4-3.
Negative Pulse Performance Test Setup
4-10.
DATA PROBE SETUP 'TIME PERFORMANCE TEST
4-11. Connect the equipment as shown in Figure 4-4. Equipment front panel settings:
80138 Front Panel Settings:
Pulse period
=
200 ns (5 MHz) in 20 n position
Pulse width
=
square wave
Amplitude
=
5V.
NOTE
Adjust the pulse width to obtain approximately the same
pulse period of throughout the frequency range.
80078
Front Panel Settings:
External Input
-
Ext. Trigger
Pulse delay
-
5.0 ns position
Pulse width
-
5.0 ns position
Slope Polarity
+
Transition time
-
2.0 ns Leading edge: Fully CCW. Trailing edge: Fully CCW
-
NORM
Amplitude
=
+5V
Output Pulse Polarity
+