20VS5-500
P. 4 / 4
EM-4413 Rev.4
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
For a non-inverting amplification with ex
-
ternal adjustments, when the combined
resistance of the span adjustment and 9kΩ
is 10kΩ, the gain is (1 + 10kΩ / R
2
)
×
V
IN
.
With the span adjustment (2kΩ), the out
-
put is configurable. The zero is adjustable
with a reference voltage source of ±7.5V DC
and the attenuation of 200Ω and 30kΩ.
■
Inverting amplifier's circuit with external adjustment
INPUT V
IN
+
–
–
+
9kΩ
10kΩ
100kΩ
(ZERO)
2kΩ
(SPAN)
R
2
30kΩ
200Ω
+
–
+
–
+
–
OUTPUT ±5V DC
1
2
4
3
5
6
+
–
10
9
7
8
REFERENCE
VOLTAGE
SOURCE
POWER SUPPLY
15V DC
For an inverting amplification with exter
-
nal adjustments, when the combined re
-
sistance of the span adjustment and 9kΩ is
10kΩ, the gain is -(10kΩ / R
2
)
×
V
IN
. With
the span adjustment (2kΩ), the output is
configurable. The zero is adjustable with
a reference voltage source of ±7.5V DC and
the attenuation of 200Ω and 30kΩ.
MAINTENANCE
Regular calibration procedure is explained below:
■
CALIBRATION
Warm up the unit for at least 10 minutes. Apply 0%, 25%,
50%, 75% and 100% input signal. Check that the output
signal for the respective input signal remains within accu-
racy described in the data sheet.
+
–
+
–
Non-inverting amplifier circuit zero/span adjustments (input ±2.5V, output ±5V)
OUTPUT ±5V DC
■
Non-inverting amplifier's circuit with external adjustments: Example of G = 2
+
–
–
+
REFERENCE
VOLTAGE
SOURCE
9kΩ
10kΩ
50kΩ
(ZERO)
2kΩ
(SPAN)
INPUT ±2.5V DC
R
2
30kΩ
200Ω
+
–
1
2
4
3
5
6
+
–
POWER 15V DC
10
9
7
8
