SPECIFICATIONS
PRS-202 Series
5
CAGE CODE: 62015
www.ietlabs.com
POWER:
110-125 V or 210-250 V; 50-60 Hz;
(internally switch selectable)
0.5 A fuse, 5x20 mm.
Resistance Type: Resistance wire for 0.1
Ω
steps and below; hermetically sealed, wirewound, low-inductance
resistors for 1
Ω
to 100 k
Ω
steps; precious metal-oxide film resistors for 1 M
Ω
steps and over.
Range: 0 to 99,999,999.9
Ω
, with 0.1
Ω
steps.
Accuracy: ±(0.05% + 15 m
Ω
), after subtraction of Zero Resistance, 4-terminal "true-ohm" measurement, at
23°C; traceable to NIST.
Zero Resistance: <140 m
Ω
, <100 m
Ω
, typical; add 20 m
Ω
if OC (Open Circuit) option is present; <20 m
Ω
, with
SC (Short Circuit) option activated.
Drift after Warm-up: <±(75 ppm + 2 m
Ω
), true resistance drift; typically less.
Maximum Load: 3 A, or 200 V (dc + ac peak), or 0.5
Ω
/step, or 4.5
Ω
maximum, whichever applies first.
Interface: IEEE-488.2-1987,SCPI 1994.0; front panel switch selects REMOTE or LOCAL operation;
"*IDN"
for S/N, Model & REV;
"CAL:DATe?"
for last calibration date
Terminals: Four gold-plated tellurium-copper binding posts are provided for HI and LO terminal pairs for CURRENT
and SENSE. These binding posts virtually eliminate thermal emf effects at their junctions. One additional binding post,
GND, is connected to the case, to chassis ground, and to earth ground.
MODEL:
PRS-202W-IEEE.2
SN:
G2-XXXXXXX
PRS-202 SERIES OPERATING GUIDE
CONSULT INSTRUCTION MANUAL FOR PROPER INSTRUMENT OPERATION
IET LABS, INC.
• 534 Main Street, Westbury, NY 11590 • (516) 334-5959 • (800) 899-8438
PRS202BLBL/p31/PRS-202W-IEEE.2/10-16-02
Observe all safety rules when working with high voltages or line voltages.
ELECTRICAL SHOCK HAZARD. DO NOT OPEN CASE.
REFER SERVICING TO QUALIFIED PERSONNEL.
WARNING
FIGURE 2.1 Typical OPERATING GUIDE Affixed to Unit
