V 1 Lascar Electronics, V 1 Datasheet - Page 4

• Manufacturer Part Number: V 1
• Description: VOLTMETER, LCD, 3.5 DIGIT, DIL CONNECTION, 200mV READING
• Manufacturer: Lascar Electronics
• Type: Voltmeterr

Specifications of V 1

• Accuracy: 0.25 %
• Brand/series: V 1
• Display Digit Height: 0.25 Inch
• Display Type: LCD
• Mounting Type: Socket or Panel
• Number Of Digits: 3 1/2
• Primary Type: Electronic
• Signal, Input: Voltage
• Special Features: Low Cost
• Termination: Pins
• Voltage, Supply: 7 to 12 VDC
• Lead Free Status / Rohs Status: RoHS Compliant part

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
inputbeyond the power supply rails willdamage the meter.
±200mV
±200mV
Measuring an input voltage referenced to a floating supply,
i.e. the input voltage and the m eter'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 1
V 1
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
XDP
XDP
DP1
DP1
2000V*
6
5
6
5
200mA
200 A
20mA
200V
2mA
20V
FSR
2V
V 1
910k
1M
1M
1M
Ra
0R
0R
0R
0R
Issue 6
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.
100R
100R
100k
10R
10k
Rb
1k
1k
1R
I+
I-
April/2008
3½ Digit LCD Voltmeter Module
4
Vin or in
3
IN HI
IN LO
+
-
I
Normally
SHORTED
Cut to
OPEN
Ra
V 1
V+
V-
L1
S.C.
1
2
No: 695 -Page 4 of 4
Rb
0V
+7.0 to +12V
XDP
DP1
INHI
INLO
Applies to V 1/2
6
5
Normally
OPEN
Solder to
SHORT