SP200

S P 2 OO 

3% Digit Backlit LCD Voltmeter Module 

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The SP 200 features a 200mV d.c. measurement range with auto ~~-~~ zero and auto ~~-p~~ olarity. Decimal points are user selectable. The SP 200 features a negative rail generator which enables the meter to measurea signal referenced to its own power supply GND. LED backlighting ensures excellent readability under low light conditions. The module is easily fitted into the panel, using the fixing clip provided. The module's low cost means it will suit high and low volume applications. The design of the panel meter's housing ensures splash proofing using the supplied seal. 

- 9.75mm (0.38") Digit Height 

- 200mV d.c. Full Scale Reading 

- 350HA @ +5V d.c. Power Supply 

- ¢ Auto ~~-z~~ ero and Auto ~~-p~~ olarity 

- Programmable Decimal Points 

- LED Backlighting 

- Low Battery Warning 

- Splash Proof 

- Precision Instrumentation Systems 

- Power Supply Monitoring 

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i<br>YW<br>Stock Number<br>Standard Meter SP 200<br>**----- End of picture text -----**<br>


- Test Boxes 

- Pane ~~l-~~ Mount Indication 

- Low Power Voltage Measurement 

|Specification|Min.|Typ.|Max.|Unit|Unit|
|---|---|---|---|---|---|
|Specification<br>Accuracy (overall error) *|Min.|Typ.<br>0.1|Max.|Unit<br>% (+1 count)||
|Linearity|||+1|count||
|Linearity<br>Sample rate||2.5|+1|count<br>samples/sec|count<br>samples/sec|
|Operating temperature range|0||50|°C||
|Temperature stability||100||ppm/°C|ppm/°C|
|Supply voltage|3.5|5|5.25|Vv||
|Supplycurrent|850|850A|A|A||
|Supply current<br>Backlight current @ 5V d.c.|850|850A<br>40|A<br>80|A<br>mA||
|Input leakage current (Vin = OV)||1|10|pA||



* To ensure maximum accuracy, re ~~-~~ calibrate periodically. 

## SAFETY 

To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the module’s pins must not exceed 60Vdc. The user must ensure that the incorporation of the panel meter into the user’s equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for Measuring, Control and Laboratory Use). 

MODULELASCAR ELECTRONICS HOUSE LTD. LASCAR4258 WESTELECTRONICS 12th STREETINC. Sth FLOOR,LASCARCHINAELECTRONICS aero SUN(Hk)ROWS.LTD. WHITEPARISH ERIE ’ WILTSHIRE SP5 2S) PA 16505 KWUN TONG, KOWLOON, UK USA HONG KONG TEL: +44 (1794) 884567 TEL: +1 (814) 835 0621 ie veo e380 ae FAX: +44 (1794) 884616 FAX: +1 (814) 838 8141 E ~~-~~ mail: sal shk@l hk E ~~-~~ mail: sales@lascar.co.uk E ~~-~~ mail: us ~~-~~ sales@lascarelectronics.com mail sales ascar.com. 

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S P 2 OO 

3% Digit Backlit LCD Voltmeter Module 

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## CIRCUIT DIAGRAM 

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1<br>Ne 2 _ Surface Mount @8@5 for RA ond RB-<br>mt oF Ri_ 189K 7 mr tits mal al al<br>col c2 2 AZ ch i] ‘i LeDi<br>uv } 226nF {J BUFFINHI y¢4 £3El eT 1b.<br>ancy Foo XN? at ———s 2] ot Ic2 4870<br>I c Rere be —ld 5 1 opps<br>= — oc eee<br>al apy 93 95 1 8 oP3<br>ye pp Bboy<br>TEST a Gl BAT Ve<br>- X)<br>* ZS | vLED<br>v- As Vs 9<br>Wek Re knee ise REFIT WiB-Ts COM. therefore Increasing the readingwith a constant input.<br>PIN FUNCTIONS<br>1 V+ Positive power supply to the meter and LED backlighting.<br>2. NC Notconnected.<br>3. GND_ OV power supply connection to the meter.<br>4. DP3 Connect to GND to display DP3 (199.9).<br>5. DP2 Connect to GND to display DP2 (19.99).<br>6. DP1 Connect to GND to display DP1 (1.999).<br>7. RI Reference voltage input for the meter's A/D converter.<br>8. RO Precision reference voltage output. Connect to RI for normal operation.<br>9. BL Connect to GND to switch on the LED backlighting.<br>10. COM Ground for analogue section of A/D converter.<br>It is actively held at 2.8V below V+ and must not be allowed to sink excessive current<br>(>100pA) by, for instance, connecting to a higher voltage.<br>11. IH Positive measuring input.<br>IH must be no closer than 1.5V to either the positive or negative supply.<br>12. IL Negative measuring input.<br>IL must be no closer than 1.5V to the positive supply.<br>**----- End of picture text -----**<br>


## 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). 

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lascarelectronics.com 

No.: 716 - Page 3 of 4 

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