Keithley TEC SourceMeter 2510, Service Manual, Page: 31 / 120

2-4 Calibration Models 2510 and 2510-AT
Resistor characterization
The resistors listed in Table 2-1 must be characterized using the 4-wire ohms function of the
recommended DMM before use. Be sure to use the lowest resistance range possible for each
measurement for best accuracy. Record the characterized values in Table 2-2.
Table 2-1
Recommended calibration equipment
Description Manufacturer/Model Specifications
Digital Multimeter Keithley 2002 DC Voltage
1
20V: ±6.8ppm
Resistance
1
20
Ω
:
200
Ω
:
2k
Ω
:
20k
Ω
200k
Ω
:
±23ppm
±19ppm
±7.4ppm
±7.4ppm
±29.8ppm
Resistors
2
Isotec RUG-Z-1R00-0.1 1
Ω
, ±0.1%, 100W
100
Ω
, ±1%
1k
Ω
, ±1%
10k
Ω
, ±1%
100k
Ω
, ±1%
INPUT/OUTPUT
Mating Connector
3
Keithley CS-846
Clean Copper Wire #18-22 AWG
1. Ninety day, full-range accuracy specification of ranges required for various measurement points.
2. Characterize all resistors using 4-wire ohms function of recommended DMM before use.
3. One connector supplied with Model 2510.
Table 2-2
Characterized resistor values
Nominal resistance Characterized resistance*
1
Ω
_________
Ω
100
Ω
_________
Ω
1k
Ω
_________k
Ω
10k
Ω
_________k
Ω
100k
Ω
_________k
Ω
*Characterize value using DMM (see Table 2-1).
2510-902-01 (E - Mar 2010)(Service).book Page 4 Tuesday, March 16, 2010 1:04 PM