Keithley 6517A User Manual

Front Panel Operation
2-44
AUTORANGE
The AUTORANGE option is used to configure autorange for
the coulombs function. This option allows you to speed up
the autoranging search process by eliminating the low (2nC
and 20nC) or high (200nC and 2µC) measurement ranges.
For example, if you know that the readings will not exceed
10nC, you can select LO autorange limits. When the instru-
ment autoranges (assuming AUTO range is enabled), it will
not search into the high ranges.
LO(2nC-20nC): Use this option to limit the autorange search
to the low measurement ranges.
HIGH(200nC-2µC): Use this option to limit the autorange
search to the high measurement ranges.
Red (HI)
Black (LO)
6517A
Shield (Optional)
Q
s
Measured
Charge
Input low connected
to shield
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
CAUTION:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,REPLACE FUSE WITH SAME TYPE AND RATING.
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
WARNING:NO INTERNAL OPERATOR SERVICABLE PARTS,SERVICE BY QUALIFIED PERSONNEL ONLY.
A) Connections
237-ALG-2
Cable
INPUT
250V PEAK
COMMON
TRIGGER
LINK
IN OUT
!
LINE RATING
90-134VAC
180-250VAC
50, 60, 400HZ
55VA MAX
I
E
(CHANG
E
WITH FR
O
A. Connections
B. Equivalent circuit
Figure 2-37
Typical connections for charge measurements
To A/D
Converter
S
HI
LO
GND
+
-
PREAMP OUTPUT
S
COMMON
2V ANALOG OUTPUT
+
-
S
Ranging
Amp
Q
s
Input Amplifier
Triax
Input
C
F
B) Equivalent Circuit
1Ω

Keithley 6517A Specifications

General

Brand	Keithley
Model	6517A
Category	Measuring Instruments
Language	English