Fluke PM6690 Service Manual page 69

Figure 6-38
Microprocessor bus - USB timing - Power On.
CONTINUOUS 30 MHz
Figure 6-40
FIFO timing #1.
WR
RD
DØ
AØ
CS
Figure 6-39
FIFOCLK
FIFOWR
Figure 6-41
Microprocessor bus - GPIB timing - Power On.
FIFO timing #2.
Troubleshooting 6-25
WR
RD
GPIB DIR
DØ
AØ
CS
START
INTERPOL
EMPTY
FIFOALERT
FIFOWR