DPM3AS-BL Lascar

DPM 3AS-BL 3 Digit Backlit LCD Voltmeter Module PRODUCT DESCRIPTION The DPM 3AS-BL features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user selectable. The DPM 3AS-BL features a negative rail generator which enables the meter to measure a signal referenced to its own power supply GND. LED backlighting ensures excellent readability under low light conditions. The design of the panel meter s housing allows the module to be easily snapped into a panel. The module s low cost means it will suit high and low volume applications. The DPM 3AS-BL is intended to replace the DPM 3, DPM 3S, DPM 3-BL and DPM 3S-BL in many applications, usually requiring only minor circuit modifications. FEATURES 11mm (0.43 ) Digit Height 200mV d.c. Full Scale Reading 3.0 to 7.5V or 6.0 to 15.0V Operation Auto-zero and Auto-polarity Programmable Decimal Points LED Backlighting TYPICAL APPLICATIONS ORDERING INFORMATION Precision Instrumentation Systems Power Supply Monitoring Stock Number Hand held instruments Standard Meter DPM 3AS-BL Panel-Mount Indication Low Power Voltage Measurement 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. V+ to V- configuration 6.0 9.0 15.0** V d.c. Meter supply current V+ to GND configuration 350 m A V+ to V- configuration 175 m A Backlight supply voltage 4.75 5.0 *** V d.c. Backlight supply current 5V d.c. 40 60 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. Unless otherwise noted, specifications apply at T =25C, V =5Vd.c. (f =48kHz) and are tested with the module configured for fully floating A supply clock input mode. SAFETY To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the modules pins must not exceed 60Vdc. The user must ensure that the incorporation of the panel meter into the users equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for Measuring, Control and Laboratory Use). LASCAR ELECTRONICS LTD. LASCAR ELECTRONICS INC. LASCAR ELECTRONICS (HK) LIMITED MODULE HOUSE 3750 WEST 26th STREET FLAT C, 5/FL., LUCKY FTY. BLDG. ERIE WHITEPARISH 63-65 HUNG TO ROAD WILTSHIRE SP5 2SJ PA 16506 KWUN TONG KOWLOON USA UK HONG KONG TEL: +44 (1794) 884567 TEL: +1 (814) 835 0621 TEL: +852 2797 3219 FAX: +1 (814) 838 8141 FAX: +852 2343 6187 FAX: +44 (1794) 884616 E-mail: sales lascar.co.uk E-mail: us-sales lascarelectronics.com E-mail: b4lascar samsongroup.com.hk PPaagege2o2 off44 Page1of4 www.lascarelectronics.comDPM 3AS-BL 3 Digit Backlit LCD Voltmeter Module DIMENSIONS All dimensions in mm (inches) 2.54 (0.1) pin pitch c 0.50 (0.02) pin width 6.00 (0.24) ab d 37.5 (1.48) 40.0 (1.57) a. 2.00 (0.08) b. 6.00 (0.24) c. 1.60 (0.06) d. 6.00 (0.24) Panel cut-out: 38.0 x 18.0 Panel thickness: 1.0 - 2.5 (1.50 x 0.71) (0.04 - 0.10) PANEL FITTING Panel Module 1 2 PIN CONFIGURATION (rear view) FUNCTIONAL BLOCK DIAGRAM V+ L+ L- Vref CAL 11 1 COM LREF CAL REF HI REF LO DP2 DP1 DP3 BAT 12 13 INHI + A/D 1 8 INLO TEST V- GND BAT XDP PPaagege2o2 off44 Page2of4 www.lascarelectronics.com 20.0 (0.79) 17.5 (0.69) BAT XDP L- L+ TEST V+ GND REF HI 13.5 (0.53) REF LO 2.00 (0.08) COM IN HI IN LO V-