Martel-electronics DPM 1AS-BL User Manual download pdf

PRODUCT DESCRIPTION

TheDPM1AS-BLfeaturesa200mVd.c.measurementrangewithauto-zeroandauto-polarity.Decimalpointsareuser

selectable.

LED backlighting ensures excellent readability under low light conditions.

easily snapped into a panel. The module's

The DPM 1AS-BL features a negative rail generator which enables the meter to measure a signal referenced

to its own power supply GND. The design

of the panel meter's housing allows the module to be low cost means it will

suit high and low volume applications. The DPM 1AS-BL is intended to replace the DPM 1, DPM 1S, DPM 1-BL and

DPM 1S-BL in many applications, usually requiring only minor circuit modifications.

FEATURES

• 5.5

• 200mV d.c. Full Scale Reading

• 3.0 to 7.5V or 6.0 to 15.0V Operation

•

mm (0.22") Digit Height

Programmable Decimal Points

LED Backlighting

Auto-zero and Auto-polarity

TYPICAL APPLICATIONS

• Precision Instrumentation Systems

• Power Supply Monitoring

• Hand held instruments

• Panel-Mount Indication

• Low Power Voltage Measurement

ORDERING INFORMATION

Stock Number

StandardMeterDPM1AS-BL

DPM1AS-BL

3½DigitBacklitLCDVoltmeterModule

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).

ELECTRICAL SPECIFICATIONS

Specification Min. Typ. Max. Unit

Accuracy (overall error) * 0.1 % (±1 count)

Linearity ±1 count

Sample rate 2.5 samples/sec

Operating temperature range 0 50 °C

Temperature stability 250 ppm/°C

Meter supply voltage V+ to GND configuration 3.0 5.0 7.5 V d.c.

175 A

Backlight supply voltage 4.75 5.0 *** V d.c.

Backlight supply current @ 5V d.c. 15 30**** mA

Input leakage current (Vin = 0V) 1 10 pA

* To ensure maximum accuracy, re-calibrate periodically.

** Operation of the meter beyond the maximum supply voltage rating may cause permanent damage to the meter.

*** An external series resistor is required above 5V, see Applications.

**** This specification linearly derates to 20mA @ 50°C.

V+ to V- configuration 6.0 9.0 15.0** V d.c.

Meter supply current V+ to GND configuration 350 A

V+ to V- configuration

Page2of4Page 2 of 4

Unless otherwise noted, specifications apply at T =25°C, V =5Vd.c. (f =48kHz) and are tested with the module configured for single ended

input mode.

A supply clock

www.martelmeters.com

page 1 of 4

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Summary of Contents

Page 1 - DPM1AS-BL

PRODUCT DESCRIPTIONTheDPM1AS-BLfeaturesa200mVd.c.measurementrangewithauto-zeroandauto-polarity.Decimalpointsareuserselectable.LED backlighting ensures

Page 2

30.0 (1.18)28.0 (1.10)11.0 (0.43)14.0 (0.55)0.50 (0.02)pin width2.00 (0.08)pin pitcha. 2.00 (0.08)b. 6.00 (0.24)c. 1.60 (0.06)d. 6.00 (0.24)5.00 (0.20

Page 3 - PIN FUNCTIONS

DPM1AS-BL 3½DigitBacklitLCDVoltmeterModuleCIRCUIT DIAGRAMwww.lascarelectronics.comPIN FUNCTIONS1. V+ Positive powersupply tothe m

Page 4

DPM1AS-BL3½DigitBacklitLCDVoltmeterModuleSpecificationsliabletochangewithoutpriorwarningDPM1AS-BLIssue3February/2002M.C.AppliestoDPM1AS-BL/2APPLICATIO

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Martel-electronics DPM 1AS-BL User Manual

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