Mixed mode with linear final regulation

Single, dual and triple output models

Current up to 20A, power up to 420W

Constant voltage or constant current

4 digit meters with 10mV and 1mA (or 10mA) resolution

Switchable remote sense terminals for perfect regulation
   at the load

Silent fan-free cooling (not EX202R/4210R)

DC output switch enables voltage/current setup without
   the load connected

Safety terminals accept fixed shroud 4mm plugs plus
   forks and wires

EX354RT has auxiliary output of 1.5V to 5V at 5A

TECHNICAL SPECIFICATIONS

OUTPUT

Voltage/Current Ranges

• EX355R - 0 to >35V; 0 to >5A (175W nominal power)
• EX1810R - 0 to >18V; 0 to >10A (180W nominal power)
• EX2020R - 0 to >20V; 0 to >20A (400W nominal power)
• EX4210R - 0 to >42V; 0 to >10A (420W nominal power)
• EX354RD - 2 x (0 to >35V; 0 to >4A) (280W nominal power)
• EX354RT - 2 x (0 to >35V; 0 to >4A) plus <1.5 to >5.0V @ 5A (305W nominal power)

Output Setting & Control

Voltage Setting: By coarse and fine controls.

Current Setting: By single logarithmic control.

Output Mode: Constant voltage or constant current with automatic cross-over. CC indicator in constant current mode.

Output Switch: Electronic, non isolating. Preset voltage and current limit displayed when Output off.

Output Performance

Ripple & Noise: Typically <2mV rms, <10mV pk-pk, (EX355R, EX354RD, EX354RT)  CV mode, 20MHz bandwidth
.                       Typically <2mV rms, <20mV pk-pk (EX1810R, EX2020R, EX4210R)

Load Regulation: <0.01% of maximum output for a 90% load change (using remote sense).

Line Regulation: <0.01% of maximum output for 10% line change.

Transient Response: <200us to within 50mV of setting for a 5% to 95% load change.

Temp. Coefficient: Voltage: typically <100ppm/oC.

Output Protection

Output Protection: Outputs will withstand forward voltages up to 40V (EX355R, EX354RD,& EX354RT); 22V (EX1810R); 25V (EX2020R); 48V (EX4210R). Reverse protection by diode clamp for currents to 3A.

Output Connections

Output Terminals: Universal 4mm safety binding posts on 19mm (0.75") spacing.

Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals and bare wires.

Remote Sense

Sense Selection: Voltage sensing is selected as Local or Remote by front panel switch.

Sense Terminals: Sprung loaded screw-less terminals.

METER SPECIFICATIONS

Display Type: Dual 4-digit meters, 14mm (0.56") LED.

Voltage Meter

Resolution: 10mV

Accuracy: 0.3% of reading +/- 3 digits

Current Meter (EX355R, EX354RD, EX354RT)

Resolution: 1mA

Accuracy: 0.5% of reading +/- 3 digits

Current Meter (EX1810R, EX2020R, EX4210R)

Resolution: 10mA

Accuracy: 0.6% of reading +/- 3 digits

AUXILIARY OUTPUT (EX354RT only)

Voltage: Variable <1.5V to >5V by front panel control.

Meter accuracy: 0.3% +/- 4 digits.

Current limit: 5A minimum.

Load regulation: <0.5% for 90% load change.

Line regulation: <0.1% for 10% line voltage change.

Ripple & Noise Typically <2mVrms, <10mVpk-pk (20MHz bandwidth):

Output Protection: Output will withstand up to 7V forward voltage.

Diode clamp reverse protection for currents up to 3A.

Output Terminals: Universal 4mm safety binding posts on 19mm (0.75") spacing.

Status Indication: UNREG lamp.

GENERAL

Input

AC Input: EX354RD, EX354RT - 110V to 240V 50/60Hz (universal input); Other Models - 230V AC +/- 10% 50/60Hz; 115V to order.. Installation Category II

VA Ratings: EX810R, EX355R - 400VA; EX354RD, EX354RT - 500VA, EX2020R, EX4210R - 800VA

Temperature & Environmental

Operating Range: +5oC to +40oC, 20% to 80% RH

Storage Range: -40oC to + 70oC

Environmental: Indoor use at altitudes up to 2000m, Pollution Degree 2.

Cooling: EX1810R, EX355R, EX354RD, EX354RT - fan-less convection cooling; EX2020R, EX4210R - fan assisted using low-noise brushless dc fan.

Safety & EMC

Safety: Complies with EN61010-1

EMC: Complies with EN61326

Physical

Size: Single output models - 140x160x320 mm (WxHxD). Dual and triple output models - 260x160x320 mm (WxHxD).

Weight: EX810R, EX355R - 3.0kg; EX2020R, EX4210R - 3.6kg; EX354RD, EX354RT - 4.3kg.