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Applications
As an example, assume that the following values are obtained:
= 1.01 × 10
Ω
10
R
1
= 1 × 10
Ω
10
R
2
∆V = 5V
COMMON
Figure 4-9
Configuration for voltage coefficient studies
4-10
TRIAX CABLE
INPUT
ON
OFF
V, Ω GUARD
MODEL 6512
OUTPUT
MODEL 230 VOLTAGE SOURCE
TEST FIXTURE
HIGH
MEGOHM
RESISTOR
HI
LO
R X
The resulting voltage coefficient is:
Voltage Coefficient (%/V) =
Note that the voltage coefficient of a particular device may
apply only across the selected voltage range, and may, in
fact, vary with different voltage increments in the same ap-
proximate range.
A. CONNECTIONS
6512 PREAMP
HI
LO
GND
COMMON
V S
OUTPUT
B. EQUIVALENT CIRCUIT
(
100 1 10
--------------------------------- -
×
1 10
HI
I
HIGH
R X
MEGOHM
RESISTOR
LO
SHIELDED
TEST FIXTURE
A/D CONVERTER
230 VOLTAGE
SOURCE
8
×
)
10
( )
5
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