V 125 LASCAR, V 125 Datasheet - Page 4

• Manufacturer Part Number: V 125
• Description: VOLTMETER, LCD, 3.5DIGIT, PK10
• Manufacturer: LASCAR

Specifications of V 125

• Supply Voltage Range: 7VDC To 12VDC
• No. Of Digits / Alpha: 3.1/2
• Display Size: 31mm X 14mm
• Panel Cutout Height: 21.4mm
• Panel Cutout Width: 41.5mm
• Operating Temperature Range: 0°C To +50°C
• Svhc: No SVHC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Specifications liable to change without prior warning
SCALING
Two resistors Ra and Rb
may be used to alter the
full scale reading (FSR) of
the meter - see table. The
meter will have to be re-
calibrated by adjusting the
calibration potentiometer
on the rear of the module.
APPLICATIONS
Do not connect more than one meter to the same power supply
if the meters cannot use the same signal ground. Taking any
input beyond the power supply rails will damage the meter.
±200mV
±200mV
Measuring an input voltage referenced to a floating supply,
i.e. the input voltage and the meter's power supply are
isolated from each other. Check Link L1 is closed.
Measuring a single ended input referenced to supply, i.e.
the input voltage and the meter's power supply share the
same 0V rail. Check Link L1 is open.
+
+
-
-
4
4
3
3
IN HI
IN LO
IN HI
IN LO
V 125
V 125
L1
L1
V+
V-
V+
V-
*Ensure that Ra is rated for high voltage use.
2
2
1
1
Voltage
Current
0V
Vin
Iin
+7.0 to +12V
+3.5 to +6.0V
-3.5 to -6.0V
www.lascarelectronics.com
XDP
XDP
DP1
DP1
2000V*
200mA
6
5
6
5
200 A
20mA
200V
2mA
20V
FSR
V 125
2V
910k
1M
1M
1M
0R
0R
0R
0R
Ra
Issue 3
Measuring a current referenced to a floating supply, i.e. the
current being measured and the meter's power supply are
isolated from each other. Check Link L1 is closed.
100k
100R
100R
10k
10R
Rb
1R
1k
1k
I+
I-
January/2002
3½ Digit LCD Voltmeter Module
Vin or in
4
3
IN HI
IN LO
+
-
I
Normally
SHORTED
Cut to
OPEN
Ra
M.C.
V 125
V+
V-
L1
1
2
Rb
0V
+7.0 to +12V
Applies to V 125/2
XDP
DP1
INLO
INHI
6
5
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Normally
OPEN
Solder to
SHORT
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