GENERAL
DISPLAY: 6½-digit vacuum fluorescent multiline.
OVERRANGE INDICATION: Display reads “OVERFLOW.”
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; V Source, 750V 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. Non-inverting in Volts 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.
EXTERNAL TRIGGER: TTL compatible External Trigger and Electrometer Complete.
GUARD: Switchable voltage guard available.
DIGITAL I/O AND TRIGGER LINE: Available, see manual for usage.
EMI/RFI: Meets VDE-0871 and FCC Class B limits.
EMC: Conforms to European Union Directive 89/336/EEC.
SAFETY: Conforms to European Union Directive 73/23/EEC.
TEST SEQUENCES: Alternating Polarity Hi-R, Device-Characterization (Diode, Capacitor, Cable, Resistor), Resistivity,
Surface-Insulation-Resistance, and Sweep.
READING STORAGE: 100 readings (DDC mode), 15706 max. readings (SCPI mode).
READING RATE:
To internal buffer 125 readings/second
1
To IEEE-488 bus 115 readings/second
1,3
To front panel 15 readings/second
2
Bus transfer 2500 readings/second
3
Note:
1
0.01 PLC, digital filters off, front panel off, temperature + RH off.
2
1.00 PLC, digital filters off, temperature + RH off.
3
Binary transfer mode.
DIGITAL FILTER: Median and averaging.
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: 105–125V or 210–250V (external switch selected), 90–110V (internal modification required), 50–60Hz, 50VA.
PHYSICAL:
Case Dimensions: 90mm high × 214mm wide × 369mm deep
(3½
in. × 8½ in. × 14½
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).
ACCESSORIES SUPPLIED:
Model 237-ALG-2 Low Noise Triax Cable,
3-slot Triax to Alligator Clips 2m (6.6 ft)
Model 8607 Safety High Voltage Dual Test Leads
Model 6517-TP Thermocouple Input Lead
Model CS-459 Interlock Connector
Specifications subject to change without notice.
Specifications 4-5
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