Figure 5-1 Typical Connections For Coulombs - Keithley 6514 Instruction Manual

5-4 Coulombs Measurements
Step 6
Basic connections for amps measurements are shown in Figure 5-1.
NOTE
Figure 5-1
Typical connections
for coulombs
237-ALG-2
Cable
Step 7
If using auto discharge, use the REL key to zero the display when the integrator resets.
Remember that Rel was enabled in Step 5. Therefore, you will have to press REL twice. The first
press disables Rel, and the second press re-enables it to zero the display. See "Auto Discharge
Hop" in "Coulombs Measurement Considerations" (in this section).
Connect the charge to be measured to the electrometer
See "Connection Basics" in Section 2 for fundamental information on making con-
nections to the electrometer input.
Red (HI)
Black (LO)
PREAMP OUT 2V ANALOG
250V PK OUTPUT
INPUT 250V PK DIGITAL I/O
INPUT PREAMP
10K
OFF ON
GUARD
(FOLLOWS
V, GUARD INPUT)
(PROGRAMMABLE)
(INTERNAL)
Take the charge reading from the display
Metal Noise Shield
(Optional)
Input LO connected
to shield
!
COMMON CHASSIS
TRIGGER LINK RS232
LINE RATING
50, 60Hz
!
60 VA MAX
PREAMP
OUT
FUSE LINE
2V ANALOG
630mA T 100 VAC
OUTPUT
(SB) 120 VAC
COM
315mAT 220 VAC
240 VAC
(SB)
6514 Rear Panel
MADE IN
U.S.A.
IEEE-488
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)