
DMS-40PC Series
4? Digit, LED Display Digital Panel Voltmeters
Performance/Functional Speci?cations
Typical at T A = +25°C and supply voltage = +5V using the single-ended input
circuit, unless otherwise noted.
Analog Inputs
Min.
Typ.
Max.
Units
Humidity (non-condensing)
0
–
95
%
Full Scale Input Range:
Case Material
Polycarbonate
DMS-40PC-1
–
±2
–
Volts
Weight
0.75 ounces (21 grams)
DMS-40PC-2
DMS-40PC-3
Input Impedence:
DMS-40PC-1
DMS-40PC-2, -3
Overvoltage Protection ?
Common Mode Voltage Range
CMRR (dc to 60Hz)
–
–
–
100
0.8
–
–
–
±20
±200
1000
1
–
–
86
–
–
–
–
±250
±2
–
Volts
Volts
MΩ
MΩ
Volts
Volts
dB
? Applies for transient or continuous overvoltages applied to (+) INPUT HI (pin 11) with (–)
INPUT LO (pin 12) properly connected. Pin 12 is not overvoltage protected (see Figure 1).
Voltages applied to pin 12 should not exceed the supply voltage.
? See Technical Notes.
? BCD outputs are optional and must be speci?ed in the part number.
See Ordering Information.
? Includes high-intensity and BCD-output models.
Ordering Information
DMS-40PC - 1 - R S - C
Control Inputs ?
Decimal Pt. Placement (Pins 4-6, 8)
Display Test (Pin 2)
Display Hold (Pin 9)
Tie to pin 3 to activat e
Tie to pin 3 to activate all segments
Tie to pin 3 to hold last reading
Input Range:
1 = ±2V
2 = ±20V
3 = ±200V
Add -C for RoHS
LED Color:
GS = Standard Green
RH = High-Intensity Red
RL = Low-Power Red
BCD Outputs ?
Logic Levels (1 LSTTL load max.):
BCD Output Models :
RS = Standard Red
YS = Standard Yellow
Logic “1”
Logic “2”
+2.4
–
–
+0.4
–
+0.8
Volts
Volts
BCD outputs are only available on the following red meters.
DMS-40PC-1-RS-BCD-C for ±2V input range
DMS-40PC-2-RS-BCD-C for ±20V input range
Performance
DMS-40PC-3-RS-BCD-C for ±200V input range
Sampling Rate
Accuracy (3 minute warm-up):
2.5 reading per secon d
DMS-40PC-1-RL-BCD-C for ±2V input range
DMS-40PC-2-RL-BCD-C for ±20V input range
DMS-40PC-3-RL-BCD-C for ±200V input range
DMS-40PC-1 (Vin = +1.9V)
–
±2
±3
Counts
Accessories:
DMS-40PC-2 (Vin = +19V)
DMS-40PC-3 (Vin = +190V)
Zero Reading (Vin = 0 Volts)
–
–
“–001”
±3
±3
“000”
±4
±4
“001”
Counts
Counts
DMS-30-CP
DMS-BZL1-C
DMS-BZL2-C
DMS-EB-C
Panel cutout punch
DMS-40 bezel assembly
DMS-40 bezel assembly with sealing gasket
Application/evaluation board with standard
MOLEX connector, decimal point solder pads
Temperature Drift (0 = +50°C)
and attenuation resistor pads.
DMS-40PC-1
DMS-40PC-2, -3
–
–
±0.4
±0.4
±1
±1.5
Cnts/°C
Cnts/°C
A panel-mount retaining clip is supplied with each model.
Power Supply Requirements
TECHNICAL NOTES
Supply Voltage
+4.75
+5.00
+5.25
Volts
1. ANALOG COMMON (Pin 10) : This pin is an internal, low-noise
Supply Current:
ground for the DMS-40PC. It is internally connected to pin 3
Standard Models ?
Low-Power Models
–
–
+100
+35
+140
+50
mA
mA
(5V RETURN). Do not connect pin 10 to either pin 3 or your system
ground as this will create a ground loop and possibly result in errone-
ous readings.
Display
2. REFERENCE INPUT/OUTPUT (Pin 7) : This pin accesses the meter’s
Display Type and Size
Polarity Indication
Overrange Indication
4? digit, 0.52"/13.2mm high LED
Autopolarity ("–" for negative Vin)
"–0000" (?ashing) for negative Vin
internal reference and is used during the factory calibration proce-
dure. Pin 7 should be left open in most common applications. It can
be used in certain “ratiometric” applications in which it is desirable
Physical/Environmental
"0000" (?ashing) for positive Vin
for the meter’s reference to track an external reference. See Ap Note
3 in the DATEL Panel Meter Catalog for more details.
Operating Temperature
Storage Temperature
0
–20
–
–
+50
+75
°C
°C
3. DISPLAY TEST (Pin 2) : Connecting pin 2 to ground (pin 3, 5V
RETURN) will activate all LED segments, and the display will read
“–18888” regardless of the actual applied input. To reduce self-heat-
ing, the display should not be left in the “test” mode for more than 10
seconds. This pin should be left open if unused.
www.murata-ps.com/support
09/27/11
MPM_DMS-40PC.C06 Page 2 of 6