OEM 1B-LED LASCAR, OEM 1B-LED Datasheet - Page 3

• Manufacturer Part Number: OEM 1B-LED
• Description: Voltage Meter
• Manufacturer: LASCAR

Specifications of OEM 1B-LED

• No. Of Digits / Alpha: 3-1/2
• Meter Function: DC Voltmeter
• Meter Range: 0mV To 200mV
• Digit Height: 8mm
• Operating Temperature Range: 0°C To +50°C
• Meter Signal Input: Voltage
• Character Size: 0.31"
• Height: 0.65"
• Accuracy: +/- (0.1% Of Input +/- 1 Count)
• Rohs Compliant: NA
• Lead Free Status / RoHS Status: na

OEM 1B-LED
OEM 1B-LED
Specifications liable to change without prior warning
PIN FUNCTIONS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Note:
A negative supply is generated internally and mirrors the positive supply. For example: if V+ is +5V, then
the internally generated V- is -5V. When measuring with the input referenced to the same supply rail as
that of the panel meter, then the limitations on the input range are (V- + 1.5V) to (V+ - 1.5V).
CIRCUIT DIAGRAM
0V
V+
IHI
ILO
COM
RLO
RHI
NC
DP1
DP2
DP3
TEST
Negative power supply to the meter.
Positive power supply to the meter.
Positive measuring input.
IHI must be no closer than 1.5V to either the positive or negative supply (see Note).
Negative measuring input.
ILO must be no closer than 1.5V to the positive supply (see Note).
Ground for the analogue section of the A/D converter. It is actively held at 3.05V (nom.) below
V+ and must not be allowed to sink excessive current (>100 A) by, for instance, connecting
to a higher voltage.
Negative input for the reference voltage.
Positive input for the reference voltage.
Not connected.
Connect to 0V to display DP1 (199.9).
Connect to 0V to display DP2 (19.99).
Connect to 0V to display DP3 (1.999).
Connect to V+ to display all segments, except the decimal points.
www.lascarelectronics.com
OEM 1B-LED
Issue 3
January/2007
3½ Digit LED Voltmeter Module
3½ Digit LED Voltmeter Module
m
M.C.
No.: 695 - Page 3 of 4
Applies to OEM 1B-LED/1