Fluke 1630 - Page 7

Earth Ground Clamp
Performance Tests
7
Table 3. 1630 Accuracy Tests (cont.)
Step
UUT
Function
Source Applied Value
Display Reading
Limits/Instruction
22
Press F and set the HI alarm to
40 Ω
23
Press F to return to measurement
function
24
50 Ω
Clamp Beeps and Display shows
HI__
25
Press F and set the LO alarm to
30 Ω
26
Press F to return to measurement
function
27
Decade Resistance Box
and 6-in. diameter wire
loop
10 Ω
Clamp Beeps and Display shows
LO__
28
Continuity
Press F until SEC is shown on
display. Press the E and D to check
if value can be incremented.
29
Decade Resistance Box
and 6-in. diameter wire
loop
10 Ω, 20 Ω, 30 Ω,
40 Ω, 50 Ω
Press R to record each value when
display reading is stable.
30
Press F until No. and 0000 are
shown on the display. Press E and D
to check if recorded values are
displayed.
31
Turn the power off. Hold R and then
turn the power on. The display will
show CL to indicate that memory is
cleared.
32
Turn power off. Hold F, then turn
power on. When a beep sound is
heard, release F. The AP symbol
will not appear on the lower left
corner of the display. Auto-Power-
Off is disabled.
33
Ω
Decade Resistance Box
and 6-in. diameter wire
loop
10 Ω
Press H when the display
reading is stable. Press H to
hold the reading. Open the jaw and
clamp on nothing. The reading
should still show 10 Ω with
“Harmonic” shown on the display.
34 ~ A
Turn the power off then on. The AP
(Auto-Power-Off) symbol should be
in the left hand bottom corner of the
display. Wait 4 to 5 minutes. The
UUT should turn itself off.