Distortion Digital Circuitry - Keithley 2015 Service Manual

Distortion digital circuitry

Refer to Figure 4-4 for the following discussion on the distortion digital circuitry.
Figure 4-4
Distortion digital circuitry block diagram
U312, U313, U316, U317, U318, U319
OSC
DIGITAL
(See Figure 4-2)
FPGA
U327
OPTO ISO
DISTORTION
ANALOG
CIRCUITRY
(See Figure 4-5)
Troubleshooting
ROM
U330
J
T
A
G
J3
DSP
U329
EEPROM
U326
OPTO ISO
SINEGEN
CIRUITRY
(See Figure 4-6)
4-13