Keithley 7999-4, Инструкция по эксплуатации

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4-4 Service Information
4. Connect the Model 2010 INPUT and SENSE
Ω
4 WIRE jacks to the NC relay contact
and common, as shown in Figure 4-1.
NOTE Use 4-wire connections.
5. Close the relay.
6. Note the resistance reading on the Model 2010, and verify that it is <0.1
Ω
.
7. Open the relay.
8. Note the resistance reading on the Model 2010, and verify that it indicates an open cir-
cuit.
9. Repeat the measurement for the NO relay (repeat steps 4 through 8 but with the DMM
connected to the NO relay contact and common).
Model 2010 DMM
2010 MULTIMETER
RANGE
!
F
500V
PEAK
FRONT/REAR
3A 250V
AMPS
HI
LO
INPUTS
350V
PEAK 1000V
PEAK
SHIFT
LOCAL
POWER
RANGE
R
SHIFT
CH1 REM
TALK
LSTN
SRQ
STAT REL FILT
4W
BUFFER
MATH
REAR SCAN
TIMER
STEP CH2 CH3 CH4 CH5 CH6 CH7 CH8 CH9 CH10
HOLD TRIG FAST MED SLOW AUTO ERR
INPUT
SENSE
ý 4 WIRE
AUTO
EXIT ENTER DIGITS RATE
REL FILTER TRIG EX TRIG STORE RECALL
OPEN CLOSE
DCV
DCI
MX+B
%
dBm
ACV ACI ý2 ý4
FREQ TEMP
dB CONT PERIOD SENSOR
LIMITS ON/OFF DELAY HOLD
SAVE SETUP CONFIG HALT
TYPE
RS232
GPIB
RATIO
STEP SCAN
DRYCKT O COMP
CAL TEST
Connect to INPUT and SENSE
Closed
Relay
Common
Relay
(NC or NO)
Model 7999-4 Relay
Under Test. See Section 2
for Detailed Connections.
>>
>>
Figure 4-1
Channel resistance
test connections