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Conditions that may give uncertain results are indicated on the display of the unit
as follows:
Frequency
f > 513Hz
f ≤ 513Hz
f > 513Hz
f ≤ 513Hz
(1) I
': current I
H-E
(2) Not active if the SMOOTH function is selected.
(3) The
symbol may also appear if there is an external voltage > 42 V on the terminals of the device.
(4) You should change to manual mode and modify the measurement voltage and/or frequency to make
a valid measurement (when the NOISE symbol is no longer illuminated).
Ground Resistance Tester Model 6471
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Function
3P, 4P, V pot.
4Psel
3P, 4P, ρ, V pot
4Psel
All (except ρ and 2
clamps)
All
4P sel
All
R
PASS
R
PASS
All
All
measured at the start of the measurement before I
H-E
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Triggering threshold
I
< 6 mA
H-E
(1)
I
' < 6 mA
H-E
I
< 1 mA
H-E
(1)
I
' < 1 mA
H-E
R
> 5 kΩ
S
R
> 30 kΩ
S
I
< 1 mA
ES
Values measured (U,
I, R) unstable, varying
by more than 5% about
their mean values.
I
< 3 mA
ES
I
< 30 mA
SEL
U
< 10 mV
S-ES
I
< 0,3 mA
ES
I
< 3 mA
SEL
U
< 1 mV
S-ES
U
, U
, U
> 42 V
S-ES
S-E
H-E
Stray voltage of which
the frequency and/or
value is likely to inter-
fere with the measure-
ment.
.com
Indication on the
display unit
flashes
flashes
H
flashes
flashes
S
flashes
flashes
steady
flashes
(2)
flashes
-.--- (undefined)
flashes
(4)
NOISE
.
SEL
1.888.610.7664
(3)
(3)
(3)
(3)
(3)
77
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