3-4 Return to Section Topics 6517B-900-01 Rev. A / Jun 2008
Section 3: Basic Measurements Model 6517B Electrometer User’s Manual
Current measurements
Assuming “BENCH” reset conditions, the basic procedure is as follows:
1. With zero check enabled (“ZeroCheck” displayed
), select the amps function by pressing I.
The Z-CHK key is used to enable or disable zero check.
2. To achieve optimum accuracy for low current measurements, zero correct the Model 6517B.
To do this, use the RANGE key to select the lowest measurement range (20pA) and
press REL. With zero correct enabled, the REL indicator is on, and the message “ZCor” is
displayed.
3. Select a measurement range or use autoranging:
a. To automatically select the most sensitive range, enable autorange. The AUTO key
enables and disables autorange. When enabled, the AUTO annunciator is on.
b. For manual ranging, use the RANGE and keys to select a measurement range
consistent with the expected current.
4. Connect the instrument to the current to be measured as shown in Figure 3-2.
CAUTION Do not apply more than 250V peak (DC to 60Hz; 10 seconds per minute
maximum on mA
ranges), or instrument damage may occur.
5. Press Z-
CHK to disable zero check and take a reading from the display. To disable zero
correct, enable zero check and then press REL.
Figure 3-2
Current measurements
Red (HI)
Black (LO)
6517B
Shield
(Recommended
below 1mA)
I
s
Input low
connected
to shield
CAUTION: Maximum Input = 250V peak (DC to
60Hz) ; 10s per minute maximum on
mA ranges.
Measured
Current
Triax
Cable
OPTION SLOT
250VDC MAX
MADE IN
U.S.A
LINE RATING
50-60 Hz
100 VA MAX.
LINE
WARNING: NO INTERNAL OPERATOR SERVICABLE PARTS, SERVICE BY QUALIFIED PERSONNEL ONLY.
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE FUSE WITH SAME TYPE AND RATING.
1250Vpk
PREAMP
OUT
1000VDC
MAX
FUSE
630mAT
315mAT
100V
120V
220V
240V
COMMON 2V OUT
LO HI
V SOURCE
TRIGGER LINK RS-232
DIGITAL I/O
HUMIDITY
TEMP
TYPE K
INTERLOCK
IEEE-488
2VDC MAX
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
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