LASCAR DPM3AS-BL User Manual
DPM 3AS-BL
3½ Digit Backlit LCD Voltmeter Module
PRODUCT DESCRIPTION
The DPM 3AS-BL features a 200mV d.c. measurement range with auto-zero andauto-polarity. Decimal points are user
selectable.
to its own power supply GND. The design
of the panel meter's housing allows the module to be low cost means it will
The DPM 3AS-BL features a negative rail generator whichenables the meter to measure a signalreferenced
LED backlighting ensures excellent readability under low light conditions.
easily snapped into a panel. The module's
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
mm (0.43") Digit Height
•11
• 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
• Precision Instrumentation Systems
• Power Supply Monitoring
• Hand held instruments
• Panel-Mount Indication
• Low Power Voltage Measurement
ORDERING INFORMATION
Stock Number
Standard Meter DPM 3AS-BL
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.
Meter supply current V+ to GND configuration 350 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 =25°C, V =5Vd.c. (f =48kHz) and are tested with the module configured for fully floating
input mode.
V+ to V- configuration 6.0 9.0 15.0** V d.c.
µ
V+ to V- configuration
A supply clock
175 A
µ
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 thatthe incorporationof thepanel 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).
LASCAR ELECTRONICS LTD.
MODULE HOUSE
WHITEPARISH
WILTSHIRE SP5 2SJ
UK
TEL: +44 (1794) 884567
FAX: +44 (1794) 884616
E-mail: sales@lascar.co.uk
LASCAR ELECTRONICS INC.
3750 WEST 26th STREET
ERIE
PA 16506
USA
TEL: +1 (814) 835 0621
FAX: +1 (814) 838 8141
E-mail: us-sales@lascarelectronics.com
www.lascarelectronics.com
LASCAR ELECTRONICS (HK) LIMITED
FLAT C, 5/FL., LUCKY FTY. BLDG.
63-65 HUNG TO ROAD
KWUN TONG KOWLOON
HONG KONG
TEL: +852 2797 3219
FAX: +852 2343 6187
E-mail: b4lascar@samsongroup.com.hk
Page2of4Page 2 of 4
Page1of4
DPM 3AS-BL
DIMENSIONS
All dimensions in mm (inches)
Panel cut-out: 38.0 x 18.0
PANEL FITTING
(1.50 x 0.71)
20.0 (0.79)
17.5 (0.69)
Panel thickness: 1.0 - 2.5
(0.04 - 0.10)
3½ Digit Backlit LCD Voltmeter Module
2.54 (0.1)
0.50 (0.02)
pin width
37.5 (1.48)
40.0 (1.57)
pin pitch
6.00 (0.24)
ab d
2.00 (0.08)
13.5 (0.53)
c
a. 2.00 (0.08)
b. 6.00 (0.24)
c. 1.60 (0.06)
d. 6.00 (0.24)
Panel
Module
1
FUNCTIONAL BLOCK DIAGRAM
L-L+
8
1
COM
REF HI
REF LO
INHI
INLO
Vref
V+
CAL
+
_
A/D
2
COM
IN HI
(rear view)
1
V-
IN LO
PIN CONFIGURATION
11
LREF
BAT
XDP
TEST
CAL
L-
L+
12 13
V+
GND
REF HI
REF LO
DP1DP2 DP3 BAT
V-TEST
BAT XDPGND
Page2of4Page 2 of 4
www.lascarelectronics.com
Page2of4
Loading...