Applications
4-10
As an example, assume that the following values are obtained:
R
1
= 1.01
×
10
10
Ω
R
2
= 1
×
10
10
Ω
∆
V = 5V
The resulting voltage coefficient is:
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.
100 1
10
8
×
(
)
1
10
10
5
( )
×
----------------------------------
Voltage Coefficient (%/V) =
A/D CONVERTER
RX
B. EQUIVALENT CIRCUIT
HI
LO
GND
INPUT
TRIAX CABLE
RX
A. CONNECTIONS
V,
Ω
GUARD
HI
LO
HIGH
MEGOHM
RESISTOR
I
SHIELDED
TEST FIXTURE
MODEL 230 VOLTAGE SOURCE
6512 PREAMP
OUTPUT
COMMON
230 VOLTAGE
SOURCE
LO
HI
TEST FIXTURE
MODEL 6512
HIGH
MEGOHM
RESISTOR
VS
OFF
ON
COMMON
OUTPUT
Figure 4-9
Configuration for voltage coefficient studies
Summary of Contents for 6512
Page 119: ...Maintenance 7 10 Figure 7 5 Exploded view...
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