Associated Research HypotULTRA 7800, Operation And Service Manual

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174
screen
–DCW. This is the same test as the normal DCW but in reverse polarity. A
negative DC voltage will be applied. The following table shows the specifications for
this option:
Negative DCW
Output Voltage, DCV 0 - (-6000) 1 ± (2% of s 5V)
DC Output Ripple
<4 %
（
-6KV/10mA at Resistive Load
）
SETTINGS
Auto Range
HI and LO-Limit, current,
uA
0.0000-0.9999 0.0001
± (2% of s 10 counts)
Low Range is ON.
1.000 - 9.999 0.001
10.00 - 99.99 0.01
100.0 - 999.9 , Low range
= ON
0.0 - 999.9 , Low range =
OFF
0.1
± (2% of s 2 counts)
1000 - 10000 1
Ramp-Up Timer, second 0.4 - 999.9
0.1 ± (0.1% + 0.05 sec)
Ramp-Down Timer,
second
0.0, 1.0-999.9
Dwell Timer, second
0, 0.4 - 999.9
,(0=continuous)
and 0, 1.0 - 999.9 when it
be selected low current.
range.
Ramp-HI, current , uA
0.0000-0.9999 0.0001
± (2% of s 10 counts)
Low Range is ON.
1.000 - 9.999 0.001
10.00 - 99.99 0.01
100.0 - 999.9 0.1
± (2% of s 2 counts)
1000 - 10000 1
Charge-LO, current
0.0 - 350.0 µA DC or Auto Set, When current range is 3 ranges.
0.00 - 35.00 uA DC or Auto Set, When current range is 6 ranges.
Discharge Time
< 50 msec for no load, < 100 msec for capacitive load
Maximum Capacitive
Load
DC Mode
1µF < 1KV 0.08µF < 4KV
0.75µF < 2KV 0.04µF < 5KV
0.5µF < 3KV 0.015uF < 6KV
Ground Continuity
Current
Current: DC 0.1 A ± 0.01A, fixed
Max. Ground Resistance: 1.0 Ω ± 0.1Ω
Current Offset (like U3) 0.0 -
10000uA *(Total c current offset ≤10mA)
Arc Detection 1 - 9 ranges (9 is the most sensitivity)