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WK1868A 高阻机/Megohmmeters

  • 产品参数
  • 适用范围
  • 说明
  • 产品描述
  • 参数配置
● High Output Power to 80Watts
● Measurement Range: 10kΩ to 1PΩ
● Basic Accuracy: ± 2% to 1TΩ
● Programmable Test Voltage: 10V to 1kV (1868A), 50V to 5kV (1868D)
● Selectable Charge Current: to 80mA (1868A), to 18mA (1868D)
● Leakage Current Measurement Down to 1pA (± 2% Basic Accuracy)
● Programmable Charge, Delay and Discharge Times
● Contact Check Function
● 5 Programmable Limit Sets
● Internal Storage of 4 Tests (20 Steps each) Plus Additional Storage with Optional PCMCIA Memory Card
● Standard RS232, IEEE and Remote I/O Interfaces
● Graphic LCD with Text, Bar Graph and X-Y Graph Displays
● Current or Resistance Display Mode
● 4 Ranges Plus Automatic Ranging
● Automatic Zeroing
● Floating Power Supply (1868A) for Measurements on Grounded Devices

Resistance Range

10k惟 - 1P惟 (dependent on test voltage) 4 Ranges or Auto Range:

Range 1: 1pA to 10nA, Range 2: 2nA to 100nA,

Range 3: 20nA to 10uA, Range 4: 2uA to 1mA

Resistance Accuracy

For Rx <20G (Vx): (2% of reading +5cnt) ,

For Rx >20G (Vx): (Vx/1pA) in ohms.

Max reading: Vx/0.1pA

Rx = Measured resistance in ohms, Vx = Programmed voltage in volts

Voltage Range

10 to 1000V DC in 1V steps, 1868A

50 to 5000V DC in 1V steps, 1868D

Voltage Accuracy

2% of setting, 1V in uncalibrated mode

Source Resistance

100, 1kV (1868A); 3.3k, 5kV (1868D)

Charge Current

2/25/80mA (1868A); 2/10/18mA (1868D)

Discharge Resistance

100k

Current Measure

1pA to 1mA

Current Accuracy

[2% of reading +5cnts +1pA]

Input Impedance

For Ix > 10nA: 10k惟 ; For Ix < 10nA: 1M惟 ,Ix = Programmed current in amperes

Measure Limits

5 Programmable Limit Sets

Measurement Result

Resistance or Current

Measurement Mode

Continuous or Triggered

Averaging

1-100 measurements

Test Speed

Trigger Mode: 40msec, Continuous Mode: 90-4000msec,

(Depending on # to Average)

Programmed Time

Charge: 0 - 9999msec

(Charge R: 200)

Measurement Delay: 0 - 9999msec

Discharge: 0 - 100sec or Auto mode

Auto: 0.1(Cx) as Vx goes to 1% Vt

Cx = Measured capacitance (F)

Vx = Programmed voltage (V)

Zero/Offset

Automatic Zeroing of All Ranges or Individual Zeroing of 4 Ranges

Display

LCD graphic display

3.5 digit resolution

Line Graph: X-Y: I or R versus Time

Bar Graph: 8 ranges/2 decades/graph, Fixed or auto-scale

Indicators: HV, Measure, Bin, Remote

Standard Interfaces

RS232, IEEE 488, Remote I/O

Internal Storage

2 Global Setups (Save Instrument Setup and Sequence Setups)

4 User-Programmable Sequence Setups, (Up to 20 Steps each)

4 Pre-Programmed Sequence Setups

External Storage

PCMCIA Interface for 2M SRAM Memory

Cards (20 Setups/20 Steps each)

Input Terminals

HV: BNC Connector

I IN: Triaxial Connector

GUARD: Sheathed Banana Plug

Safety

Interlock Plug

Password-protected Charge Current (For I > 2mA)

HV Break Red LED/Push Button

Dimensions

(w x h x d):12.5 x 4.5 x 15.5 inches (312.5 x 112.5 x 387.5 mm)

Weight

28 lbs (12.7kg) net

41 lbs (18.6kg) ship

Environmental

Operating: 10C to +40C, 80% RH

Power

110V - 240V

50 or 60Hz

400W Max (1.8A at 220V AC, 3.2A at 125V AC)

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