SPECIFICATIONS
PRS-300 Series
3
Chapter 2
SPECIFICATIONS
For convenience to the user, the pertinent
speci
fi
cations are given in an OPERATING
GUIDE, shown typically in Figure 2.1, af
fi
xed
to the case of the instrument.
2.1 Specifi cations
User interface:
Numeric keypad to enter resistance value with digital
display.
Accuracy:
±(70 ppm + 1 m
Ω
) 2 and 4 Terminal at
23°C ±5°C Also see section 2.2
Minimum setting:
0.1
Ω
Resolution:
1
μΩ
or 6 digits
Range:
0.1
Ω
- 20 M
Ω
Stability: See section 2.2
Thermal emf:
< 15
μ
V
Maximum Load:
2 A, 200 V (peak), 0.5 W whichever
applies
fi
rst
Resistors:
Precision wire-wound and metal foil
TC of Resistors:
< 1 ppm/°C for R4 and above
RTD Tables:
9 RTD tables can be entered into memory to allow
user selection of temperature and the correct value
of resistance will automatically be programmed.
PT-100 and PT-1000 tables for both Fahrenheit and
Celsius are pre-programmed into memory locations
1 to 4.
Adjustment:
Automatic adjustment procedure utilizing a high pre-
cision DMM eliminates the requirement for manual
trimming of resistors.
AC Frequency Response:
Residual Capacitance Terminals to GND: < 850 pF
Resistance
Typical ac/dc difference @ 1 kHz
0.1
Ω
-10 k
Ω
<100 ppm
10 - 100 k
Ω
<200 ppm
100 k
Ω
- 1 M
Ω
<1%
1 - 20 M
Ω
<20%
Terminals
:
Four low-emf, gold-plated, tellurium-cop per 5-way
bind ing posts are used for
HI
and
LO
ter mi nal pairs
for
CUR RENT
and
SENSE
.
GND
bind ing post is
con nect ed to the case, to the chassis ground and to
the earth ground.
Switching time:
15 ms Max for relay switch time
between values, typically < 1 ms.
< 20 ms to interpret command and switch via
ieee.488 interface
Power requirements:
90 - 264 Vac , 47 - 63 Hz. 30 Watts Max.
Environmental conditions:
Operating:
10°C to 40°C; <80% RH
Storage:
-40°C to 70°C
Note: exposure to humidity >60% for extended
periods of time can cause the resistors to drift
some of which is reversible. See 2.2 for more
information
Dimensions:
Bench model: 43 cm W x 8.9 cm H x 33 cm D (17” x
3.5” x 13”)
in front of panel
: 3.8 cm (1.5”).
Weight:
Bench model: 5.5 kg (12 lb); weight speci
fi
cations
are nominal.
Remote Control:
USB:
USB Type B connector standard on rear panel
Remote Control Options:
IEEE:
GPIB standard 24 pin connector, conforms to IEEE-
488.2; SCPI 1994.0 command set; Hardware or
software con
fi
gurable addressing range of 1 to 30.
Ethernet:
IEEE 802.3 compliant, Speeds 10 BaseT
(10 Mb/s) and 100 BaseT (100 Mb/s), IP Address
Static or DHCP, Factory setting 192.168.0.254 static
Summary of Contents for PRS-300 Series
Page 2: ...TEL 516 334 5959 800 899 8438 FAX 516 334 5988 www ietlabs com IET LABS INC...
Page 16: ...SPECIFICATIONS PRS 300 Series 6...
Page 24: ...PRS 300 Series IEEE INTERFACE OPTION 14...
Page 34: ...PROGRAMMING PRS 300 Series 24...
Page 42: ...PRS 300 Series PRS DMM SOFTWARE 32...
Page 50: ...PRS 300 Series APPENDIX B 40...
