Keithley 2015 Service Manual page 29

6.
7.
8.
9.
10.
Figure 1-6
Connections for resistance verification (100M Ω range)
Model 2015
REM STEP SCAN CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
TALK
LSTN
SRQ
SHIFT
TIMER HOLD TRIG FAST MED SLOW REL FILT AUTO ERR
dBm
MATH T H D dB CONT
Ω2 Ω4
SHIFT DCV ACV DCI ACI
DELAY HOLD LIMITS ON/OFF TEST
CAL
LOCAL
EX TRIG TRIG STORE RECALL FILTER REL
POWER
SAVE SETUP CONFIG HALT GPIB RS232
SOURCE MEAS STEP SCAN DIGITS RATE
THD
Table 1-6
Limits for resistance verification
Nominal
Ω Range
resistance
100 Ω
100Ω
1k Ω
1kΩ
10k Ω
10kΩ
100kΩ 100kΩ
1MΩ 1MΩ
10MΩ 10MΩ
100MΩ 100MΩ
* Calculate limits based on actual calibration resistance values and Model 2015 one-year accuracy
specifications. See Verification limits.
Source the nominal full-scale resistance values for the 100 Ω -10M Ω ranges summarized
in Table 1-6, and verify that the readings are within calculated limits.
Connect the Model 2015 INPUT and SENSE jacks to the calibrator as shown in
Figure 1-6.
Disable external sense on the calibrator.
Set the Model 2015 for the 100M Ω range.
Source a nominal 100M Ω resistance value, and verify that the reading is within cal-
culated limits for the 100M Ω range.
Sense HI
SENSE
Ω 4 WIRE INPUT
HI
CH9 CH10 MATH
REAR
4W
350V 1000V
BUFFER STAT !
PEAK PEAK
2015 THD MULTIMETER
LO
500V
PERIOD TCOUPL
PEAK
INPUTS
FREQ TEMP
RANGE
F R
AUTO
FRONT/REAR
3A 250V
Input
AMPS
RANGE
EXIT ENTER
LO
Sense LO
Nominal reading limits
(1 year, 18°C-28°C)
99.9860 to 100.0140Ω
0.999890 to 1.000110kΩ
9.99890 to 10.00110kΩ
99.9890 to 100.0110kΩ
0.999890 to 1.000110MΩ
9.99590 to 10.00410MΩ
99.8470 to 100.1530MΩ
Input
HI
Output
HI
Output
LO
Note: Use shielded cables to minimize noise.
Disable calibrator external sense mode.
Recalculated limits*
__________ to __________ Ω
__________ to __________ kΩ
__________ to __________ kΩ
__________ to __________ kΩ
__________ to __________ MΩ
__________ to __________ MΩ
__________ to __________ MΩ
Performance Verification
Resistance Calibrator
1-15