Function Specific Troubleshooting - Agilent Technologies E4980A Service Manual

Troubleshooting

Function Specific Troubleshooting

Function Specific Troubleshooting
If the E4980A exhibits a failure symptom that is related to a specific function or control
such as a front panel key control, display, data storage, remote control interface, external
trigger, isolate the trouble using the Function Specific Troubleshooting procedures
described below. The major functions of the E4980A and the troubleshooting procedure for
each function are shown in Table 4-5.
Table 4-5 Major functions and troubleshooting procedures
Function
Front panel keys
LCD display
Front USB port
External trigger input
LAN port
GPIB Interface
USB (USBTMC)
Interface
Handler interface
(Option E4980A-201)
Scanner interface
(Option E4980A-301)
Bias current interface
(Option E4980A-002)
40
Description
All the E4980A functions can be set and controlled
via the front panel keys.
Almost all the information including the
measurement value, setup state, result data
processing, menu bar, softkey label and others are
indicated on the LCD display.
The USB port is used to save data in a USB
memory. The LED for USB lights up while
accessing the USB memory.
The external trigger input terminal (BNC) on the
rear panel allows an external trigger source to be
used for measurement trigger.
The LAN interface port on the rear panel allows
the E4980A to be connected to 10/100 Base-T
Ethernet.
The GPIB compatibility allows the E4980A to be
operated as a talker/listener on IEEE 488 interface
bus.
Through this port, you can control the E4980A via
external controllers. It is equivalent to control via
GPIB.
The interface is for data exchange with an
automatic machine (handler) used on production
line.
The interface to connect a scanner to perform up to
128 sets of multi-channel correction and
measurements.
The interface to connect the 42841A (Bias Current
Source).
Troubleshooting
Refer to "To Check the Front
Panel" on page 41.
Refer to "To Check the
LCD" on page 41.
Refer to "To Check the Front
USB port" on page 41.
Refer to "To Check the
External Trigger Input" on
page 42.
Refer to "To Check the
LAN" on page 42.
Refer to "To Check the
GPIB" on page 44.
Refer to in "To Check the
USB (USBTMC) Interface
Card" on page 45.
Refer to in "To Check the
Handler Interface Function
(Option 201 only)" on
page 45.
Refer to in "To Check the
Scanner Interface Function
(Option 301 only)" on
page 49.
Refer to in "To Check the
Bias Current Interface
Function (Option 002 only)"
on page 53.
Chapter 4