The 8508A-7000K Calibration Kit contains a specially designed lead
set, 1 GOhm standard resistor and four-wire shorting PCBs for
performance verification and calibration adjustment of the 8508A.
The lead set allows the 8508A to be connected to a 5720A calibrator
and a 5725A amplifier in the configuration described in the 8508A
User Manual Calibration and Verification chapter, enabling users to
exactly duplicate the setup used for factory calibration.
The leads are constructed from low capacitance, low leakage
dielectric material (PTFE), with low thermal emf 6 mm gold plated
copper spade terminations. The 1 GOhm standard resistor plugs
directly into the 8508A front input terminals without any
inter-connecting leads, minimizing errors from lead effects and noise
pickup. It is specified for stability with time (100 ppm/yr) and
temperature (25 ppm/ ºC), and is supplied with a calibration
certificate stating its measured value to an uncertainty of 110 ppm.
8508A-7000K Calibration Kit contents (Item number 1886226)
Quantity Description
-1 1 GOhm resistor 100 ppm/yr and 25 ppm/ ºC stability, factory
calibration uncertainty 110 ppm (95 % CL)
-1 Screened lead set that connects 8508A Reference Multimeter to
5720A and 5725A precision calibrators
-2 Four-wire shorting PCB (used to null front and rear input)
-1 Carrying case