Keithley 2002 Repair Manual

Troubleshooting
2-7
Figure 2-1
Model 2002 overall block diagram
Amps
Sense HI Sense LO
Input HI Input LO
DC Input
Signal
Conditioning
Amps
AC Input
Signal
Conditioning
(w/freq)
Scanner Output
Scanner Inputs
Scanner
Option
Power Supply
F/R Status DC SIG/REF
DC/MUX FETS
TRMS, AVE, PK
FREQ Out
AC FETS
Scanner Control Out
Line FREQ In
ADC
CLK
DATA
STB
TRG
O
P
T
O
I
S
O
Hardware Trigger
Trigger
Select
Logic
ADC Data In CLK DATA STB
Control Data Out
Trigger Delay
Software Trigger
External Trigger, Meter Complete Trigger Bus
56
Digital I/O 68302
Front Panel Reset Front Panel Clock Front Panel Data Out Front Panel Data In
IEEE Data In (ISR)
GPIB
IEEE-488 Bus
Front
Panel
Controller
55 Vdc 5 Vdc 5.5 Vac
ADC Data In
Digital
IEEE Data Out (DMA)

Keithley 2002 Specifications

General

Brand	Keithley
Model	2002
Category	Multimeter
Language	English