产品描述
● 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
产品参数
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Resistance Range 聽 |
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 |
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Resistance Accuracy 聽 |
For Rx <20G (Vx): 卤(2% of reading +5cnt) , For Rx >20G (Vx): 卤(Vx/1pA) in ohms. Max reading: Vx/0.1pA Rx = Measured resistance in ohms, Vx = Programmed voltage in volts |
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Voltage Range 聽 |
10 to 1000V DC in 1V steps, 1868A 50 to 5000V DC in 1V steps, 1868D |
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Voltage Accuracy |
2% of setting, 卤1V in uncalibrated mode |
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Source Resistance |
100惟, 1kV (1868A); 3.3k惟, 5kV (1868D) |
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Charge Current |
2/25/80mA (1868A); 2/10/18mA (1868D) |
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Discharge Resistance |
100k惟 |
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Current Measure |
1pA to 1mA |
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Current Accuracy |
卤[2% of reading +5cnts +1pA] |
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Input Impedance |
For Ix > 10nA: 10k惟 ; For Ix < 10nA: 1M惟 ,Ix = Programmed current in amperes |
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Measure Limits |
5 Programmable Limit Sets |
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Measurement Result |
Resistance or Current |
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Measurement Mode |
Continuous or Triggered |
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Averaging |
1-100 measurements |
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Test Speed |
Trigger Mode: 40msec, Continuous Mode: 90-4000msec, (Depending on # to Average) |
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Programmed Time 聽 |
Charge: 0 - 9999msec (Charge R: 200惟) Measurement Delay: 0 - 9999msec Discharge: 0 - 100sec or Auto mode |
Auto: 0.1(Cx) as Vx goes to 1% Vt Cx = Measured capacitance (渭F) Vx = Programmed voltage (V) |
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Zero/Offset |
Automatic Zeroing of All Ranges or Individual Zeroing of 4 Ranges |
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Display 聽 |
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 |
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Standard Interfaces |
RS232, IEEE 488, Remote I/O |
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Internal Storage 聽 |
2 Global Setups (Save Instrument Setup and Sequence Setups) 4 User-Programmable Sequence Setups, (Up to 20 Steps each) 4 Pre-Programmed Sequence Setups |
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External Storage 聽 |
PCMCIA Interface for 2M SRAM Memory Cards (20 Setups/20 Steps each) |
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Input Terminals 聽 |
HV: BNC Connector I IN: Triaxial Connector GUARD: Sheathed Banana Plug |
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Safety 聽 |
Interlock Plug Password-protected Charge Current (For I > 2mA) HV Break Red LED/Push Button |
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Dimensions |
(w x h x d):12.5 x 4.5 x 15.5 inches (312.5 x 112.5 x 387.5 mm) |
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Weight 聽 |
28 lbs (12.7kg) net 41 lbs (18.6kg) ship |
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Environmental |
Operating: 10掳C to +40掳C, 80% RH |
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Power 聽 |
110V - 240V 50 or 60Hz 400W Max (1.8A at 220V AC, 3.2A at 125V AC) |
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