Omega Products DP3520-5 User Manual

4½ DIGIT DC VOLTMETER
¹⁄16 DIN CASE, 5 VDC POWERED

DP3520

DP3520-5 shown

actual size.

U ±19,999 Count Display Span
U ±2 V to ±200 Vdc Ranges
U True-Differential Input
U 86 dB CMR
U 1 GΩ Input Impedance
U 1 pA Input Bias Current
U 3-Wire Ratio Measurement
U Serial BCD Output
U Bright, 14 mm (0.56")
U LED Display
U Automatic Zero and Polarity
U Display Hold and Test
U 5 Vdc Power
U Low-Profile ¹⁄₁₆ DIN Case

Options

U Three-State Parallel BCD Output
U ±0.001%/°C Span Tempco
U High-Impedance 3-Wire Ratio Input

The DP3520 is an economical 5-volt powered,
high-resolution, high-accuracy 4½ digit DC voltmeter
in a compact ¹⁄₁₆ DIN case. The height of the panel
cutout is only 22 mm (0.88"). The depth behind the
panel is only 72 mm (2.83").

Low cost, small size, low power consumption and
exceptional power-supply noise rejection make the
DP3520 ideal for demanding OEM and portable­instrument applications. Non-isolated character-serial
BCD output is standard to allow the DP3520 to be
interfaced to other instrumentation.

PARALLEL BCD OPTION F2M

The F2M option is an upper board which
converts the meter’s serial BCD output to
non-isolated, three-state parallel BCD. An
address decoder on the board permits the meter’s
parallel BCD outputs to be enabled by a 4-bit
binary address signal for three-state data-busing
applications.

SPECIFICATIONS

Noise Rejection

NMR: 60 dB at 50/60 Hz
CMR: 86 dB, DC to 60 Hz
CMV: SIG LO to DIG GND ±1 Vp

Accuracy at 25°C

Maximum Error: ±0.01% of reading ±2 counts
Span Tempco, Standard: (2 V) ±0.005% of reading/°C,

(20/200 V) ±0.0025 of reading/°C
Span Tempco, Optional: (2 V) ±0.001% of reading/°C,

(20/200 V) ±0.002% of reading/°C

Step Response: 2 s
Warmup to Rated Accuracy: 0.5 hr

Signal Input

Configuration: Bipolar, true-differential
Zero: Automatic

Analog-To-Digital Conversion

Technique: Dual-slope, average-value
Polarity: Automatic
Signal Integration Period: 100 ms
Read Rate: 2.5/s

3-Wire Ratio Reference

Reference Voltage: 0.5 to 3.0V
Load on Reference, Std: 40 kΩ
Load on Reference, Opt: 1 GΩ

D-1

INSTRUMENTATION

D

Display

Type: 7-segment, red LED
Height: 14 mm (0.56")
Symbols: -1.8.8.8.8
Decimal Points: Four positions

programmable internally or at connector

Overrange Indication: Display flashes

Digital Signals

Output Signals: TTL-compatible
Hold Input: TTL or 5V CMOS

compatible
Blanking Input: Open-collector

compatible

RANGE RESOLUTION INPUT RESISTANCE BIAS CURRENT MAXIMUM INPUT

±1.9999V 100 µ-V 1 GΩ 10 pA 300 Vp

±19.999V 1 mV 1.1 MΩ 1 pA 300 Vp

±199.99V 10 mV 1 MΩ 0.1 pA 300 Vp

Power

Voltage: 5 Vdc ±5%
Current: 170 to 230 mA
Power Consumption: 1 W (nominal)

Environmental

Operating Temperature: 0 to 55°C
Storage Temperature: - 40 to 85°C
Relative Humidity: 95% at 40°C

(non-condensing)

Mechanical

Dimensions: 24 H x 96 W x 72 mm D

(0.94 x 3.77 x 2.82")
Panel Cutout: 22.2 x 92 mm

(0.874 x 3.622")

Weight: 5 oz (145 g)
Case Material: 94V-0 UL-rated

polycarbonate

To Order Visit omega.com/dp3520 for Pricing and Details

MODEL NO. DESCRIPTION

DP3520

-3

-4

-5

*

-LT

*

-F2M

*

-UC

NOTE: All combinations may not be valid, check online for valid part numbers.
Ordering Examples: DP3520-4, for 4½ digit dc voltmeter, 5 Vdc powered, ±19.999 Vdc input, serial BCD output.

4½ digit, 5 Vdc powered voltmeter

±1.9999 Vdc

±19.999 Vdc

±199.99 Vdc

(Nothing, leave field blank) Standard (±0.005% of reading/°C) span
tempco

High-stability (±0.001% of reading/°C) span tempco

(Nothing, leave field blank) Standard, serial BCD output non-isolated

Parallel BCD output, three-state (mutually exclusive with PA)
Includes PCB edge connector

(Nothing, leave field blank) Spring clamp, standard case mounting

U-shaped mounting clamp (not compatible with F2M)

*

(Nothing, leave field blank) red LED display

-G

Green LED display

D-2