Unless otherwise noted, specifications apply at T =25°C, V
input mode.
PRODUCT DESCRIPTION
The DPM 2AS-BL features a 200mV d.c. measurement range with auto-zero and auto-polarity. Decimal points are user
selectable.
to its own power supply GND.
of the panel meter's housing allows the module to be
suit high and low volume applications. The DPM 2AS-BL is intended to replace the DPM 2, DPM 2S, DPM 2-BL and
DPM 2S-BL in many applications, usually requiring only minor circuit modifications.
FEATURES
TYPICAL APPLICATIONS
• Precision Instrumentation Systems
• Power Supply Monitoring
• Hand held instruments
• Panel-Mount Indication
• Low Power Voltage Measurement
ELECTRICAL SPECIFICATIONS
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).
• 8.25
• 200mV d.c. Full Scale Reading
• 3.0 to 7.5V or 6.0 to 15.0V Operation
•
•
•
Specification
Accuracy (overall error) *
Linearity
Sample rate
Operating temperature range
Temperature stability
Meter supply voltage
Meter supply current
Backlight supply voltage
Backlight supply current @ 5V d.c.
Input leakage current (Vin = 0V)
* 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.
Auto-zero and Auto-polarity
Programmable Decimal Points
LED Backlighting
mm (0.32") Digit Height
The DPM 2AS-BL features a negative rail generator which enables the meter to measure a signal referenced
V+ to GND configuration
V+ to V-
V+ to GND configuration
V+ to V-
LED backlighting ensures excellent readability under low light conditions.
configuration
configuration
A
www.martelmeters.com
supply
=5Vd.c. (f
easily snapped into a panel. The module's
Min.
4.75
3.0
6.0
0
clock
=48kHz) and are tested with the module configured for single ended
ORDERING INFORMATION
Standard Meter
3½ Digit Backlit LCD Voltmeter Module
Typ.
250
175
350
0.1
2.5
5.0
9.0
5.0
15
1
Max.
15.0**
***
±1
7.5
30****
50
10
low cost means it will
% (±1 count)
samples/sec
ppm/°C
V d.c.
V d.c.
V d.c.
Stock Number
DPM 2AS-BL
count
Unit
mA
pA
°C
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A
A
The design
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