SP300 Martel Electronics, SP300 Datasheet - Page 3

• Manufacturer Part Number: SP300
• Description: LED DPM 200MV 3.5 DIGIT RED
• Manufacturer: Martel Electronics
• Series: SPr
• Type: Voltmeterr

Specifications of SP300

• Measuring Range: 200mVDC
• Display Style: Red Characters, Black Background
• Display Type: LED
• Display Face Size: 1.38" L x 0.88" W (35.1 x 22.4mm)
• Display Digits: 3.5
• Display Digits - Height: 0.370" (9.40mm)
• Backlight: Red
• Mounting Type: Panel Mount
• Termination: PC Pins
• Voltage - Supply: 4.75 ~ 5.25V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 227-1052

SP 300
PIN FUNCTIONS
1. V+
2. 0V
3. COM Ground for analogue section of A/D converter.
4. IH
5. IL
6. DP1
7. DP2
8. DP3
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).
Solder Links:
LCOM
CIRCUIT DIAGRAM
1
4
5
3
2
Normally Open. Connects IL to COM.
Positive power supply to the meter.
0V power supply connection to the meter.
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.
Positive measuring input.
Negative measuring input.
Connect to 0V to display DP1 (199.9).
Connect to 0V to display DP2 (19.99).
Connect to 0V to display DP3 (1.999).
www.lascarelectronics.com
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com
3½ Digit LED Voltmeter Module
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