17. Set the HP 8560A’s sweep time to 100 ms. The voltage at
518
pin 4 should measure
approximately -4.21 Vdc.
18. Set the HP
8560A’s
sweep time to 200 ms. The voltage at
518
pin 4 should measure
approximately -2.1 Vdc.
19. The analog switches and comparators should be set as listed in Table 10-10.
20. Check that U312D opens when the sweep time is set to 2 seconds.
21. Check that
U312B
and U312C close when the sweep time is set to 20 seconds.
Table 10-10. Settings for Switches and Comparators
Sweep Time
200 ms
2s
20
s
Switch Switch
U312B U312C
Open Open
Open Open
Closed Closed
Switch
U312D
Closed
Open
Open
Comparator
Comparator
U319A
Pin 1
U319B
Pin 7
High
High
High
High
High
High
lo-22
Synthesizer Section