Fluke 5560A - Determine Specification Limits for Other Calibration Intervals

Calibrator
Calibration Verification of the Product
9
Determine Specification Limits for other Calibration Intervals
The verification procedures in this document tests to the 90-day, 99 % confidence specification limits of
the 5560A. For the 5550A and 5540A or for other calibration intervals, you must calculate limits based
upon the specification that was selected. The subsequent examples show how the 1-year specification
limits are calculated. These examples illustrate how to calculate the specifications limits for other
intervals or levels of confidence.
The first example shows how to calculate a specification limit for a particular test point from the
combined specification which is listed as a percentage (or parts per million) of reading plus a floor error
in microvolts, millivolts, microamps, or nanoamps. The component of the specification in parts per
million is referred to as a range specification. The floor specification has the same base units of
measurement as the output value (volts, amps). Do not add a range specification and floor
specification together directly, because they are not in the same units of measurement. To add the two
quantities, convert one quantity so that they are both in the same unit of measurement.
Equipment Description Manufacture/Model/PN Application
DBL BANANA N (M)
RG58C/U (≈ 16 in)
(Fluke PN 900394) 5790-8026 Idc, Iac, Phase
BANANA/DBL BANANA, 2
COND 24 in
Pomona 1368-A-24 Idc Zero, Vac AUX
BNC (M) to Binding Posts Pomona Model 1296 Idc, Iac, Phase
BNC (F) to BNC (M) Y
Adapter
Pomona Model 6700 Capacitance, Inductance
BNC (F) To Single Banana
Plug
Pomona Model 1894 Capacitance, Inductance
Type N (M) to dual banana
(M)
E-Z-Hook PN 9415 Idc, Iac, Phase
Type N (M) On 50 Ohm
RG214/U Cable
Pomona Model 1658-T Idc, Iac
Fluke 8508A short 4-wire short (Fluke PN 2540973) Vdc
Type N (F) to Type N (F)
adapter
Various Idc, Iac
LC Male to LC Male adapter A40B-ADAPT/LC Idc, Iac
LC Female to N Male inter-
series adapter
A40B-ADAPT/LCN Idc, Iac
N to 4 mm double banana
cable
A40B-LEAD/4 mm Idc, Iac, Phase
Single banana to single
banana lead
Various Various
BNC (F) to Type N (M) Pasternack PN PE9002 Ohms
Table 1. Required Equipment for Main Output (cont.)