2

Performance/Functional Specifications

unless otherwise noted.

DMS-30PC

3 ½

DIGIT ,

LED

DISPLA Y

DIGIT AL

P ANEL V O L TMETERS

DMS-30PC - 1 - R S

LED Color:

AS = Standard Amber

BS = Standard Blue

GS = Standard Green

OS = Standard Orange

QS = Standard Aqua

RS = Standard Red

YS = Standard Yellow

RH = High-Intensity Red

GL = Low-Power Green

OL = Low-Power Orange

RL = Low-Power Red

Technical Notes

1. +1.23V REFERENCE OUTPUT (Pin 9): This pin is the output of the

meter’s precision +1.23V internal reference, and it is referenced to

ANALOG COMMON (pin 10) which sits at a potential of approxi-

mately +2V. This output should be buffered if used to drive external

loads since sourcing more than 15µA from pin 9 can affect both the

initial accuracy and temperature drift of the meter.

2. ANALOG COMMON (Pin 10): This pin is connected to an internal,

low-noise, "relative" ground. It is used in certain differential and

"floating" measurements as described in the Applications section of

this data sheet and Ap Note 3 of the DATEL Panel Meter Catalog.

Pin 10 should not be connected to pin 3 (5V RETURN) or to your

system’s analog ground.

3. REFERENCE OUTPUT (Pin 8) and INPUT (Pin 7): Pin 8 is a

precision reference actively trimmed at the factory. In normal

operation, pin 8 must be tied to pin 7 to achieve all listed accuracy

and drift specifications.

Accessories:

DMS-30-CP

Panel cutout punch

DMS-BZL1

DMS-30 bezel assembly

DMS-BZL2

DMS-30 bezel assembly with sealing gasket

RN-DMS

Gain/offset potentiometer kit for DMS-EB,

DMS-EB-AC/DC and DMS-EB-DC/DC

Add-On Application Boards:

DMS-EB

Multi-purpose (gain/offset, 4-20mA, etc.)

DMS-EB-HTB

High-accuracy temperature probe sensing for

±200mV models

DMS-EB-DC/DC

Provides isolated +5V power

DMS-EB-TCJ

J-type thermocouple inputs for ±2V models

DMS-EB-TCK

K-type thermocouple inputs for ±2V models

DMS-EB-RMS

For true rms measurements of ac voltages

DMS-EB-AC/DC

For ac line-powered applications

DMS-EB-LP

For 4-to-20mA loop-powered applications

Input Range:

0 = ±200mV

1 = ±2V

2 = ±20V

3 = ±200V Available on the

following models only:

-GS (Standard Green)

-RS (Standard Red)

-RL (Low-Power Red)

Ordering Information

ΠApplies 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.

Analog Inputs

Min.

Typ.

Max.

Units

Full Scale Input Range:

DMS-30PC-0

--

±200

--

mV

DMS-30PC-1

--

±2

--

Volts

DMS-30PC-2

--

±20

--

Volts

DMS-30PC-3

--

±200

--

Volts

Input Impedance:

DMS-30PC-0, -1

100

1000

--

M

Ω

DMS-30PC-2, -3

0.8

1

--

M

Ω

Overvoltage Protection Œ

--

--

±250

Volts

Common Mode Voltage Range

--

--

±2

Volts

CMRR (dc to 60Hz)

--

86

--

dB

Control Inputs 

Decimal Point Placement (Pins 4-6)

Tie to pin 3 to activate

Display Test (Pin 2)

Tie to +5V to activate all segments

Performance

Sampling Rate

2.5 samples per second

Accuracy (3 minute warm-up):

--

±1

±2

Counts

--

±1

±2

Counts

--

±2

±3

Counts

--

±2

±3

Counts

"– 001"

"000"

"001"

Temperature Drift (0 to +60°C)

--

±0.15

±0.3

Cnts/°C

+1.23V Reference Output (Pin 9) 

+1.20

+1.23

+1.25

Volts

Power Supply Requirements

Supply Voltage

+4.75

+5.00

+5.25

Volts

Supply Current:

Standard Models:

Blue display

--

+400

+550

mA

All others

--

+150

+225

mA

Low-Power Models:

Red display

--

+12

+17

mA

Green or orange display

--

+60

+100

mA

Display

Display Type and Size

3½ Digit LED, 0.56"/14.2mm high

Polarity Indication

Overrange Indication

Physical/Environmental

Operating Temperature:

Blue display models

0

--

+50

°C

All other models

0

--

+60

°C

Storage Temperature

–40

--

+75

°C

Humidity (Non-condensing)

0

--

95

%

Case Material

Polycarbonate

Weight

0.75 ounces (21 grams)

A panel-mount retaining clip is supplied with each model.