A-4 Specifications
GENERAL
DISPLAY: 6
1
⁄
2
-digit vacuum fluorescent.
OVERRANGE INDICATION: Display reads “OVRFLOW”.
RANGING: Automatic or manual.
CONVERSION TIME: Selectable 0.01 PLC to 10 PLC.
PROGRAMS: Provide front panel access to IEEE address, choice of engineering
units or scientific notation, and digital calibration.
MAXIMUM INPUT: 250V peak, DC to 60Hz sine wave; 10s per minute maximum on
mA ranges.
MAXIMUM COMMON MODE VOLTAGE (DC to 60Hz sine wave): Electrometer,
500V peak;
ISOLATION (Meter COMMON to chassis): Typically 10
10
Ω in parallel with 500pF.
INPUT CONNECTOR: Three lug triaxial on rear panel.
2V ANALOG OUTPUT: 2V for full range input. Inverting in Amps and Coulombs
mode. Output impedance 10kΩ.
PREAMP OUTPUT: Provides a guard output for Volts measurements. Can be used
as an inverting output or with external feedback in Amps and Coulombs modes.
DIGITAL INTERFACE:
Handler Interface: Start of test, end of test, 3 category bits.
Digital I/O: 1 Trigger input, 4 outputs with 500mA sink capability.
Connector: 9 Pin D subminiature, male pins.
EMC: Conforms with European Union Directive 89/336/EEC EN55011,
EN50082-1, EN61000-3-2, EN61000-3-3, FCC part 15 class B.
SAFETY: Conforms with European Union Directive 73/23/EEC EN61010-1.
GUARD: Switchable voltage and ohm guard available.
TRIGGER LINE: Available, see manual for usage.
READING STORAGE: 2500 readings.
READING RATE:
To internal buffer 1200 readings/second
1
To IEEE-488 bus 500 readings/second
1,3
To front panel 17 readings/second at 60Hz;
2
15 readings/second at 50Hz
2
Notes:
1
0.01 PLC, digital filters off, front panel off, auto zero off.
2
1.00 PLC, digital filters off.
3
Binary transfer mode.
DIGITAL FILTER: Median and averaging (selectable from 2 to 100 readings).
DAMPING: User selectable on Amps function.
ENVIRONMENT:
Operating: 0°–50°C; relative humidity 70% non-condensing, up to 35°C.
Storage: –25° to +65°C.
WARM-UP: 1 hour to rated accuracy (see manual for recommended procedure).
POWER: 90–125V or 210–250V, 50–60Hz, 60VA.
PHYSICAL:
Case Dimensions: 90mm high × 214mm wide × 369mm deep
(3
1
⁄
2
in. × 8
3
⁄
8
in. × 14
9
⁄
16
in.).
Working Dimensions: From front of case to rear including power cord and
IEEE-488 connector: 15.5 inches.
Net Weight: <4.6 kg (<10.1 lbs).
Shipping Weight: <9.5 kg (<21 lbs).
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