User`s guide
Table Of Contents
- User’s Guide
- 1 Getting Started
- 2 Introduction
- 3 Installation
- 4 Using EasyEXPERT
- 5 Classic Test Definition
- I/V Sweep
- Multi Channel I/V Sweep
- I/V List Sweep
- I/V-t Sampling
- C-V Sweep
- Direct Control
- Function Setup
- Auto Analysis Setup
- Display Setup
- SMU Range Setup Window
- ADC and Integration Time Setup Window
- Advanced Setup Window
- CMU Range Setup Window
- Advanced Setup Window for C-V Sweep
- Switching Matrix Control
- SPGU Control
- SPGU Pulse Setup Window
- Load Z Setup Window
- Pulse Switch Setup Window
- SPGU ALWG Setup Window
- Define ALWG Waveform Window
- 6 Application Test Definition
- 7 Function Details
- I/V Sweep Measurement
- Multi Channel I/V Sweep Measurement
- I/V-t Sampling Measurement
- C-V Sweep Measurement
- SPGU Module
- Sweep Abort Function
- Standby Function
- Bias Hold Function
- Current Offset Cancel
- SMU CMU Unify Unit
- Atto Sense and Switch Unit
- SMU/PG Selector
- SMU Ranging Mode
- SMU Compliance
- SMU Pulse
- SMU Measurement Time
- SMU Filter
- SMU Series Resistor
- Interlock Function
- Auto Power Off Function
- Initial Settings
- 8 Built-in Programming Tool
- 9 If You Have a Problem
- When You Operate B1500A
- When You Perform Measurement
- Measurement Takes More Time than Specified
- Noise Affects the Measured Values
- Voltage Measurement Error is Large
- SMU Oscillates for High-Frequency Device Measurements
- SMU Oscillates for Negative Resistance Measurements
- Large Current Causes High Temperature (Thermal Drift)
- Measurement Damages the Device under Test
- Leaving Connections Damages Devices after Measurement
- Unexpected Sampling Measurement Data is Returned
- MFCMU Causes Unbalance Condition
- Before Shipping to Service Center
- Data Backup and Recovery
- B1500A System Recovery
- Updating EasyEXPERT
- Error Codes
- 10 Application Library and Utilities
7- 64 Agilent B1500 User’s Guide, Edition 7
Function Details
Interlock Function
Interlock Function
The interlock function is designed to prevent electrical shock when a user touches
the measurement terminals. If the Interlock terminal is open, maximum output is
limited to ± 42 V.
To perform high voltage measurement more than ± 42 V, connect th
e Interlock
terminal to an interlock circuit of test fixture or connector plate. The interlock circuit
must have one LED and two mechanical switches placed near the shielding box
opening doors. And they must be connected together. For details on how to install
the interlock circuit, see “To Make an Interlock Circuit” on page 3-29.
The interlock function works as shown below.
• When the interlock circuit is open, maximum output is limited to ± 42 V.
• Whe
n the interlock circuit is close, source channel can force it
s maximum output
value.
• When the interlock circuit is opened in the high voltage condition more than
± 42 V, output voltage is set to 0 V immediately.
CAUTION If the actual output value is not set to 0 V within 120 msec, Agilent B1500
automatically performs the initialization. Then perform self-test. Any module may
be defective.
WARNING Dangerous voltage of up to the maximum voltage of SMUs may be present at
force, guard, and sense terminals if the Interlock terminal is closed.