Fluke 5500A, Service Manual

Page: 23 / 296

Introduction and Specifications
Specifications
1
1-9
1-7. Resistance Specifications
Ranges
[1]
Absolute Uncertainty, tcal ± 5
°
C
± (% of
Ω
) [2] Resolution
Allowable
Current
90 days 1 year [4]
0 to 10.99
Ω
0.009% 0.008
Ω
[3] 0.012% 0.008
Ω
[3] 0.001
Ω
1 to 125 mA
11 to 32.999
Ω
0.009 0.015 [3] 0.012 0.015 [3] 0.001 1 to 125 mA
33 to 109.999
Ω
0.007 0.015 [3] 0.009 0.015 [3] 0.001 1 to 70 mA
110 to 329.999
Ω
0.007 0.015 [3] 0.009 0.015 [3] 0.001 1 to 40 mA
330
Ω
to 1.09999 k
Ω
0.007 0.06 0.009 0.06 0.01 250
µ
A to 18 mA
1.1 to 3.29999 k
Ω
0.007 0.06 0.009 0.06 0.01 250
µ
A to 5 mA
3.3 to 10.9999 k
Ω
0.007 0.6 0.009 0.6 0.1 25
µ
A to 1.8 mA
11 to 32.9999 k
Ω
0.007 0.6 0.009 0.6 0.1 25
µ
A to 0.5 mA
33 to 109.999 k
Ω
0.008 6 0.011 6 1 2.5
µ
A to 0.18 mA
110 to 329.999 k
Ω
0.009 6 0.012 6 1 2.5
µ
A to 0.05 mA
330k to 1.09999 M
Ω
0.011 55 0.015 55 10 250 nA to 0.018 mA
1.1 to 3.29999 M
Ω
0.011 55 0.015 55 10 250 nA to 5
µ
A
3.3 to 10.9999 M
Ω
0.045 550 0.06 550 100 25 nA to 1.8
µ
A
11 to 32.9999 M
Ω
0.075 550 0.1 550 100 25 nA to 0.5
µ
A
33 to 109.999 M
Ω
0.4 5.5k 0.5 5.5k 1000 2.5 nA to 0.18
µ
A
110 to 330 M
Ω
0.4 16.5k 0.5 16.5k 1000 2.5 nA to 0.06
µ
A
[1] Continuously variable from 0 to 330 M
Ω
.
[2] Applies for COMP OFF (to the 5500A Calibrator front panel NORMAL terminals) and 2-wire and
4-wire compensation.
[3] The floor adder is improved to 0.006
Ω
(0 to 10.99
Ω
range) and 0.010
Ω
(11 to 329.999
Ω
) if the
5500A Calibrator is zeroed (ohms zero or instrument zero) within 8 hours and temperature is ±1
°
C
of zeroing ambient temperature.
[4] Do not exceed the largest current for each range. For currents lower than shown, the floor adder
increases by Floor
(new)
= Floor
(old)
x I
min
/I
actual
. For example, a 100
µ
A stimulus measuring 100
Ω
has a
floor uncertainty of 0.01
Ω
x 1 mA/100
µ
A = 0.1
Ω
.
Ranges Maximum Voltage [1] Maximum Lead Resistance [2]
0 to 10.99
Ω
1.37 V <3.2
Ω
11 to 32.999
Ω
4.12 <3.2
33 to 109.999
Ω
7.7 <3.2
110 to 329.999
Ω
13.2 <3.2
330
Ω
to 1.09999 k
Ω
19.8 <6
1.1 to 3.29999 k
Ω
16.5 <6
3.3 to 10.9999 k
Ω
19.8 <6
11 to 32.9999 k
Ω
16.5 <6
33 to 109.999 k
Ω
19.8 <6
110 to 329.999 k
Ω
16.5 (n/a 110 k
Ω
and above)
330 k
Ω
to 1.09999 M
Ω
19.8 “
1.1 to 3.29999 M
Ω
16.5 “
3.3 to 10.9999 M
Ω
19.8 “
11 to 32.9999 M
Ω
16.5 “
33 to 109.999 M
Ω
19.8 “
110 to 330 M
Ω
19.8 “
[1] This is for the largest resistance for each range. The maximum voltage for other values is Imax
(highest value of Allowable Current above) multiplied by Rout.
[2] Maximum lead resistance for no additional error in 2-wire COMP.