Fluke 2625A User Manual
Theory of Operation (2635A)
Detailed Circuit Description
2A
2A-37
1.37 ms
1.37 ms
1.37 ms
1.37 ms
16.56 ms
0V
GRID(10)
0V
GRID(9)
0V
GRID(1)
0V
GRID(0)
…
…
140
µ
s
GRID TIMING
s19f.eps
Figure 2A-9. Grid Control Signal Timing (2635A)
1 . 3 7 m s
0V
5V
ANODE(14..0)
-30V
GRID(X)
-30V
GRID(X-1)
GRID/ANODE TIMING
5V
-30V
72
µ
s
22.5
µ
s
117
µ
s
67.5
µ
s
140
µ
s
0V
5V
0V
s20f.eps
Figure 2A-10. Grid-Anode Timing Relationships (2635A)
2A-70. Memory Card Interface PCA
The Memory Card Interface Assembly operation is composed of four functional circuit
blocks: the Main PCA Connector, the Microprocessor Interface, the Memory Card
Controller, and the PCMCIA Memory Card Connector. These blocks are described in the
following paragraphs.
blocks: the Main PCA Connector, the Microprocessor Interface, the Memory Card
Controller, and the PCMCIA Memory Card Connector. These blocks are described in the
following paragraphs.