M-140 Multifunction Calibrator
MEATEST
128
Operation manual v46
Operation Manual Supplement
Manual Title:
M140
Issue date:
3/2016
Supplement issue:
002
This supplement contains information necessary to ensure the accuracy of the above manual.
Change 1
On page 123 the original text under the table “Resistance uncertainty” has been replaced with the following:
Maximal allowed voltage on output terminals is 8 V
pp
. Uncertainty is valid for four-terminal connection with use
of Option 70 or Option 140-41 Cable adapters. For two-wire connection from the terminals Hi-Lo na the front
panel add to the specified uncertainty next
20 mOhm
.
Change 2
On page 123 text under the table “Resistance uncertainty” has been added:
In range from 200 k
to 50 M
uncertainty is valid for two-terminal connection to front panel terminals Hi-Lo.
Change 3
Accuracy specification and load current characteristic of the DC voltage range 200 mV has been added:
range
% value + % range
Max guaranteed load current [mADC]
0
V – 20.00000 mV
0.03 + 10
V
5
20.00001 mV – 200.0000 mV
0.01 + 15
V
5 / 40
*1
0.200001 mV – 2.000000 V
0.003 + 0.0008
40
2.00001 V – 20.00000 V
0.003 + 0.0005
30
20.0001 V – 240.0000 V
*3
0.003 + 0.0005
30
240.001 V – 1000.000 V
0.005 + 0.005
2
*1
5mA load current within specified accuracy. For load current in range 5mA to 40 mA add additional accuracy U(uV) = 10 * I
load
(mA)
*3
value of the range for uncertainty calculation is 200 V
Change 4
Added information about time limitation od AC and DC curents above 10 A, page 121:
*1
Continuous current in range below 10 A. In range 10 to 20 A limited time to 30 s.