Agilent 4155C If You Have a Problem

If You Have a Problem

Agilent 4155C Semiconductor Parameter Analyzer

Agilent 4156C Precision Semiconductor Parameter Analyzer

Agilent Part No. 04156-90090

Printed in Japan January 2001

Edition 1

Legal Notice

The information contained in this document is subject to change without notice.

Copyright © 2001 Agilent Technologies

This document contains information which is protected by copyright. All rights are
reserved. Reproduction, adaptation, or translation without prior written permission
is prohibited, except as allowed under the copyright laws.

• Product Warranty

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notice of such defects during the warranty period, Agilent Technologies will, at
its option, either repair or replace products which prove to be defective.
Replacement products may be either new or like-new.

Warranty service of this product will be performed at Agilent Technologies.
Buyer shall prepay shipping charges to Agilent Technologies and Agilent
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returned to Agilent Technologies from another country.

Agilent Technologies does not warrant that the operation of Agilent
Technologies products will be uninterrupted or error free. If Agilent
Technologies is unable, within a reasonable time, to repair or replace any
product to a condition as warranted, customer will be entitled to a refund of the
purchase price upon prompt return of the product.

The Agilent Technologies products may contain remanufactured parts
equivalent to new in performance or may have been subject to incidental use.

The warranty period begins on the date of delivery or on the date of installation
if installed by Agilent Technologies. If customer schedules or delays Agilent
Technologies installation more than 30 days after delivery, warranty begins on
the 31st day from delivery.

Warranty does not apply to defects resulting from (a) improper or inadequate
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or (e) improper site preparation or maintenance.

2 Agilent 4155C/4156C If You Have a Problem, Edition 1

To the extent allowed by local law, the above warranties are exclusive and no
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Agilent Technologies specifically disclaims any implied warranties or
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• Assistance

Product maintenance agreements and other customer assistance agreements are
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• Certification

Agilent Technologies, Inc. certifies that this product met its published
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Printing History

Edition 1: January 2001

Agilent 4155C/4156C If You Have a Problem, Edition 1 3

In This Manual

This manual explains how to solve a problem or how to read status and error codes,
if you encounter some problem.

This manual is organized into the following chapters:

• When you install Agilent 4155C/4156C

This chapter explains how to solve the problems that may occur when installing
the 4155C/4156C.

• When you make a measurement

This chapter explains how to solve the problems that may occur when making a
measurement.

• If errors occur

This chapter lists error codes and messages that may be displayed when
operating Agilent 4155C/4156C. Also, this section describes how to read data
status.

4 Agilent 4155C/4156C If You Have a Problem, Edition 1

To Get Help Information

To start help function, press the Help front-panel key. Then, you can select one of
the following primary softkeys.

• OVERVIEW

Briefly explains each help softkey.

• PAGE MAP

Shows a map of all screens, highlights the present screen name, and gives a brief
description of the highlighted screen name. You can use the arrow keys to
highlight another screen name, then can display the screen by selecting the
SELECT secondary softkey.

• FIELD INFO

Describes field where the pointer is located on the screen, how to setup the field,
and the setting restrictions. This softkey is not displayed for GRAPHICS, LIST,
KNOB SWEEP, or STRESS FORCE screen.

• DATA STAT

Shows how to read data status, which is displayed at the bottom of GRAPHICS,
LIST, KNOB SWEEP, or STRESS FORCE screen. This softkey is displayed
only for these screens.

• INPUT AID

Displays variable names, mathematics functions, and read-out functions, and
describes the highlighted name or function. This softkey is not displayed for
GRAPHICS, LIST, KNOB SWEEP, or STRESS FORCE screen.

You can enter desired variable or function into the selected setup field of a
screen by selecting ENTER secondary softkey, then pressing Enter front-panel
key.

Agilent 4155C/4156C If You Have a Problem, Edition 1 5

6 Agilent 4155C/4156C If You Have a Problem, Edition 1

Contents

1. When You Install the 4155C/4156C

If the 4155C/4156C cannot be Powered on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

If Measurement Units of the 41501A/B are not Displayed on the CHANNELS:

CHANNEL DEFINITION Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

If External Keyboard does not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

If Display screen does not Appear after Applying Power . . . . . . . . . . . . . . . . . . 1-6

If the 16442A Test Fixture is not Stable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

If Network Function does not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

If the 4155C/4156C cannot mount the network file system . . . . . . . . . . . . . . . . 1-9

If CHANGE DIRECTORY Function does not work . . . . . . . . . . . . . . . . . . . . . 1-9

If GET Function does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

If SAVE Function does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

If PURGE Function does not work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

If RENAME Function does not work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10

If the 4155C/4156C cannot print on a remote printer . . . . . . . . . . . . . . . . . . . 1-11

2. When You Make a Measurement

If Measured Value Oscillates when Measuring High-Frequency Devices . . . . . . 2-3

If Measured Value Oscillates when Measuring Negative Resistance . . . . . . . . . . 2-4

If Noise Affects the Measured Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

If Measured Voltage has some Error when Forcing a Large Current. . . . . . . . . . . 2-6

If Large Current Causes High Temperature (Thermal Drift) . . . . . . . . . . . . . . . . . 2-7

If Measurement Takes More Time than Specified . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

If Measurement Damages the Device under Test . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

If You Get Unexpected Data when Performing Sampling Measurement . . . . . . 2-10

Agilent 4155C/4156C If You Have a Problem, Edition 1 Contents - 1

Contents

3. If Errors Occur

If Errors Occur when You Perform Self-calibration or Diagnostics . . . . . . . . . . . 3-3

Error codes for measurement unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Error code for CPU and peripherals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

If Errors Occur when You Operate the 4155C/4156C. . . . . . . . . . . . . . . . . . . . . . 3-9

If a Measurement Data Status is Displayed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

GRAPH/LIST: GRAPHICS and KNOB SWEEP screen . . . . . . . . . . . . . . . . 3-29

GRAPH/LIST: LIST screen. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

STRESS: STRESS FORCE screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Contents - 2 Agilent 4155C/4156C If You Have a Problem, Edition 1

1 When You Install the 4155C/4156C

Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

This section covers the following basic problems that you may encounter when you
install the 4155C/4156C, and the solutions.

•“If the 4155C/4156C cannot be Powered on”

•“If Measurement Units of the 41501A/B are not Displayed on the CHANNELS:
CHANNEL DEFINITION Screen”

•“If External Keyboard does not Work”

•“If Display screen does not Appear after Applying Power”

•“If the 16442A Test Fixture is not Stable”

•“If Network Function does not Work”

1-2 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

If the 4155C/4156C cannot be Powered on

If the 4155C/4156C cannot be Powered on

• Check that the power cable is firmly connected to the 4155C/4156C and to
power outlet.

• Check that the front-panel LINE switch is on.

• Check that the voltage selector switch is set properly.

The voltage selector switch is located in the lower-right corner of the rear panel.
The following table shows the line voltage selector setting.

Line Voltage Position

90 to 132 Vac left

198 to 264 Vac right

• Check that the fuse is good.

The fuse holder is located in the lower-right corner of the rear panel.

1. Turn the 4155C/4156C off, then disconnect the power cable from the power

outlet.

2. Unscrew the fuse holder on the rear panel.

3. Inspect that the correct fuse is installed, and wire inside the fuse is not

broken by using a tester.

Line Fuse type Agilent part number

100/120 Vac UL/CSA T 8A, 250 Vac 2110-0383

220/240 Vac UL/CSA T 4A, 250 Vac 2110-0014

4. Replace the fuse, if necessary. Then, screw in the fuse holder.

5. Turn the 4155C/4156C on.

Agilent 4155C/4156C If You Have a Problem, Edition 1 1-3

When You Install the 4155C/4156C
If Measurement Units of the 41501A/B are not Displayed on the

CHANNELS: CHANNEL DEFINITION Screen

If Measurement Units of the 41501A/B are not Displayed on the CHANNELS: CHANNEL DEFINITION Screen

• Check that the power cable is firmly connected to the 41501A/B and to power
outlet.

• Check that the LINE switch of the 41501A/B is on.

• Check that the voltage selector switch is set properly.

The voltage selector switch is located in the lower-right corner of the rear panel.
The following table shows the line voltage selector setting.

Line Voltage Position

90 to 132 Vac left

198 to 264 Vac right

• Check that the fuse is good.

The fuse holder is located in the lower-right corner of the rear panel.

1. Turn the 4155C/4156C and the 41501A/B off.

2. Unscrew the fuse holder on the rear panel.

3. Inspect that the correct fuse is installed, and wire inside the fuse is not

broken by using a tester.

Line Fuse type Agilent part number

100/120 Vac UL/CSA T 8A, 250 Vac 2110-0383

220/240 Vac UL/CSA T 4A, 250 Vac 2110-0014

4. Replace the fuse, if necessary. Then, screw in the fuse holder.

5. Turn on the 41501A/B first, then turn on the 4155C/4156C.

• Check that the interface board of the 41501A/B is firmly connected to "To
Expander Box Interface" of the 4155C/4156C rear panel.

1-4 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

If External Keyboard does not Work

If External Keyboard does not Work

• Connect keyboard first, then turn on the 4155C/4156C.

• Turn off the 4155C/4156C, then check that the connector of keyboard is firmly

connected into keyboard connector of the 4155C/4156C front panel.

• Execute the External Key Controller diagnostics test on the SYSTEM:
SELF-CALIBRATION/DIAGNOSTICS screen. If error occurs, write down the
displayed error codes and contact the nearest Agilent Technologies Sales and
Service office.

Agilent 4155C/4156C If You Have a Problem, Edition 1 1-5

When You Install the 4155C/4156C
If Display screen does not Appear after Applying Power

If Display screen does not Appear after Applying Power

• If the 41501A/B is installed, first turn on the 41501A/B, then turn on the
4155C/4156C.

• If the self-test fails, see Chapter 3.

1-6 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

If the 16442A Test Fixture is not Stable

If the 16442A Test Fixture is not Stable

• Install stabilizers on the 16442A. For this procedure, see User’s Guide: General
Information.

• If you use the 16442A test fixture with the 16440A selector or 16441A R-Box,
attach the 16442A to the 16440A or 16441A by using plates and screws. For this
procedure, see User’s Guide: General Information.

Agilent 4155C/4156C If You Have a Problem, Edition 1 1-7

When You Install the 4155C/4156C
If Network Function does not Work

If Network Function does not Work

This section covers the problems on the 4155C/4156C network function, and the
solutions.

•“If the 4155C/4156C cannot mount the network file system”

•“If CHANGE DIRECTORY Function does not work”

•“If GET Function does not work”

•“If SAVE Function does not work”

•“If PURGE Function does not work”

•“If RENAME Function does not work”

•“If the 4155C/4156C cannot print on a remote printer”

1-8 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

If Network Function does not Work

If the 4155C/4156C cannot mount the network file system

Execute the LAN interface test. For this procedure, see User’s Guide: General
Information.

If the 4155C/4156C fails the test, contact to the nearest Agilent Technologies
service office.

If the 4155C/4156C passes the test, do following:

1. Check the settings of the NETWORK SETUP table on the SYSTEM:
MISCELLANEOUS screen, and set the table properly.

If the setting is ok, but the 4155C/4156C cannot mount the network file system,
do following:

2. Send ping from NFS server to the 4155C/4156C.

• If the 4155C/4156C returns the responses:

a. Check the settings of the NETWORK DRIVE SETUP table on the

SYSTEM: MISCELLANEOUS screen, and set the table properly.

If the setting is ok, but the 4155C/4156C cannot mount the network file
system, do following:

b. Check the setting of the NFS server, and set it properly.

Directory specified by the NETWORK DRIVE SETUP table must be
exported for the 4155C/4156C.

• If no response is returned: LAN or LAN cable may be defective. Contact to

the network system administrator to solve the problem.

If CHANGE DIRECTORY Function does not work

Check the permission of the directory. The execution permission must be set.
Change the permission.

If GET Function does not work

Check the permission of the file. The read permission must be set. Change the
permission.

Agilent 4155C/4156C If You Have a Problem, Edition 1 1-9

When You Install the 4155C/4156C
If Network Function does not Work

If SAVE Function does not work

Check the following:

• Check the permission of the directory to save the file. The write permission must
be set. Change the permission.

• If the file name has already existed on the directory, the write permission must
be set for the file. Change the permission.

• If the directory has been exported with the read only permission, the
4155C/4156C cannot write a file on the directory. Retry to export the directory
with read/write/execute permission.

If PURGE Function does not work

Check the following:

• Check the permission of the file to be deleted. The write permission must be set.
Change the permission.

• If the directory has been exported with the read only permission, the
4155C/4156C cannot delete a file on the directory. Retry to export the directory
with read/write/execute permission.

If RENAME Function does not work

Check the following:

• Check the permission of the source file. The read permission must be set.
Change the permission.

• Check the permission of the directory for the target file. The write permission
must be set. Change the permission.

• If the target file name has already existed on the directory, the write permission
must be set for the file. Change the permission.

• If the directory has been exported with the read only permission, the
4155C/4156C cannot rename/copy a file on the directory. Retry to export the
directory with read/write/execute permission.

1-10 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Install the 4155C/4156C

If Network Function does not Work

If the 4155C/4156C cannot print on a remote printer

If the 4155C/4156C cannot print on a remote printer, or the following error message
is displayed on the screen, do following:

ERROR 18: Device I/O error. Unable to print out.

If you can use the 4155C/4156C as a NFS client, ignore step 1 and 2, and go to step

3.

1. Execute the LAN interface test. For this procedure, see User’s Guide: General
Information.

If the 4155C/4156C fails the test, contact to the nearest Agilent Technologies
service office.

If the 4155C/4156C passes the test, do following:

2. Check the settings of the NETWORK SETUP table on the SYSTEM:
MISCELLANEOUS screen, and set the table properly.

If the setting is ok, but the 4155C/4156C cannot use the remote printer, do
following:

3. Send ping from the print server to the 4155C/4156C.

• If the 4155C/4156C returns the responses:

a. Check the settings of the NETWORK PRINTER SETUP table on the

SYSTEM: MISCELLANEOUS screen, and set the table properly.

If the setting is ok, but the 4155C/4156C cannot use the remote printer,
do following:

b. Confirm the setting of the print server, and set it properly. lpd/lpr

must be effective.

• If no response is returned: LAN or LAN cable may be defective. Contact to

the network system administrator to solve the problem.

If the desired output is not printed out, or an unwanted control character is printed at
the beginning of the hard copy, check the following entry fields of the NETWORK
PRINTER SETUP table, and set the fields properly.

• TEXT OUT entry field

• GRAPH OUT entry field

Agilent 4155C/4156C If You Have a Problem, Edition 1 1-11

When You Install the 4155C/4156C
If Network Function does not Work

1-12 Agilent 4155C/4156C If You Have a Problem, Edition 1

2 When You Make a Measurement

Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Make a Measurement

This section covers the following basic problems that you may encounter when you
making a measurement, and the solutions.

•“If Measured Value Oscillates when Measuring High-Frequency Devices”

•“If Measured Value Oscillates when Measuring Negative Resistance”

•“If Noise Affects the Measured Values”

•“If Measured Voltage has some Error when Forcing a Large Current”

•“If Large Current Causes High Temperature (Thermal Drift)”

•“If Measurement Takes More Time than Specified”

•“If Measurement Damages the Device under Test”

•“If You Get Unexpected Data when Performing Sampling Measurement”

2-2 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Make a Measurement

If Measured Value Oscillates when Measuring High-Frequency Devices

If Measured Value Oscillates when Measuring
High-Frequency Devices

When measuring parameters of high-frequency devices, such as GaAs MESFETs or
high-frequency bipolar transistors, oscillation may cause measurement problems.
Normal measurement cannot be performed because of oscillation.

To solve this problem:

• For FETs, add resistive ferrite beads as close as possible to the gate.

• For bipolar transistors, add resistive ferrite beads as close as possible to the base

or emitter.

• Make connection cables as short as possible. Long wires cause oscillation
because of their large inductance.

Test Device

To u n i t

To U ni t

Ferrite
Beads

UGT06002, 90x40

Agilent 4155C/4156C If You Have a Problem, Edition 1 2-3

When You Make a Measurement
If Measured Value Oscillates when Measuring Negative Resistance

If Measured Value Oscillates when Measuring Negative Resistance

If the DUT has negative resistance characteristics, SMUs may oscillate. Because
SMUs operate as negative feedback amplifier.

To solve this problem:

• For voltage controlled negative resistance device

• Connect G in parallel with your DUT to cancel negative resistance. To

obtain an output I-V curve, use the following equation.

I

= I - G * V

Y

• For current controlled negative resistance device

• Connect R in series with your DUT to cancel negative resistance. To obtain

an output I-V curve, use the following equation.

V

= V - R * I

Z

• If the resistance of the DUT is less than 1 MW, you can use R-Box.

2-4 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Make a Measurement

If Noise Affects the Measured Values

If Noise Affects the Measured Values

When you measure low current of a DUT, the measured values may not be stable.

To solve this problem:

• Set the power line frequency correctly. The value affects the integration time. So
the wrong value causes the measurement error by the power line noise. Use the
SYSTEM: MISCELLANEOUSE screen to set the power line frequency.

• Use guarding to reduce the leakage current between your prober and the
4155C/4156C. Note that long wires cause oscillation because of their large
inductance. For details about connections, refer to User’s Guide: General
Information.

• If some high-power electric machines are operating around the 4155C/4156C,
turn off the machines, then perform the measurements. The machines affect the
power line waveform.

• Shut the lid of test fixture or shield box to prevent effects of light.

• If these are vibrations due to nearby machines or due to air flow, put cushioning

material under prober, cable, and the 4155C/4156C; install stabilizer on the
prober; and make the cables stable by taping.

• Wait several minutes after connecting cables or moving probe needles. Because
these operations cause electromotive force.

• If you use only Force terminal and triaxial cables for HRSMUs or HPSMU,
connect an open cap to sense terminal.

• Keep constant temperature in the room when you use the 4155C/4156C. Shift of
1 °C may shift the measurement values. Temperature change causes the
following.

• Offset current in the 4155C/4156C.

• Thermoelectromotive force in DUT, which causes low current.

• Expansion and contraction of cables, which causes noise.

Agilent 4155C/4156C If You Have a Problem, Edition 1 2-5

When You Make a Measurement
If Measured Voltage has some Error when Forcing a Large Current

If Measured Voltage has some Error when Forcing a Large Current

Voltage measurement may have some error because of the effects of the cable
resistance when forcing a large current.

To solve this problem:

• Use Kelvin connections between SMUs and DUT. To cancel the effects of cable
resistance, connect the sense line as close as possible to the terminal of the DUT.

For details of Kelvin connections, see User’s Guide: General Information.

2-6 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Make a Measurement

If Large Current Causes High Temperature (Thermal Drift)

If Large Current Causes High Temperature
(Thermal Drift)

If a large current is forced to a DUT, the temperature of the DUT may increase,
which may cause characteristics to drift.

To solve this problem:

• Use the pulse output mode of the SMU.

For large currents, the SMU should be set to pulse output mode. This decreases
the average power output to prevent temperature rise of DUT.

Agilent 4155C/4156C If You Have a Problem, Edition 1 2-7

When You Make a Measurement
If Measurement Takes More Time than Specified

If Measurement Takes More Time than Specified

When measuring current that is 10 mA or less, SMUs may take longer time to
measure than the specified integration time. When measuring in a low current range,
the SMUs automatically take longer integration time to perform accurate and stable
measurements.

To solve this problem:

• Measure current using a fixed range that is more than 10 mA. The measurement
will be performed in the specified integration time.

If you set many measurement channels, measurement takes a longer time.

To solve this problem:

• Decrease measurement channels to reduce measurement time.

Note that the number of measurement channels automatically increases if you do
both the following: force voltage from channels that are connected to R-Box and
display the voltage values or use voltage values in user functions. The channels
automatically measure current, which is used to compensate the voltage values.

2-8 Agilent 4155C/4156C If You Have a Problem, Edition 1

When You Make a Measurement

If Measurement Damages the Device under Test

If Measurement Damages the Device under Test

When Using SMU

When performing breakdown measurements by using SMU, DUTs may be
damaged.

When voltage is forced from an SMU, the current is limited by the compliance
setting, which prevents the DUT from being damaged by a large current. But when
the current rapidly increases, the current limiter in the SMU cannot follow the rapid
current increase, so a large amount of current may flow through the DUT for a
moment, which may damage the DUT.

To solve this problem:

• Insert a protecting resistor as close as possible to DUT. You can also use a
resistor of Agilent 16441A R-Box.

When Using VMU

When the measurement terminal of VMU is open and when a coaxial cable is
connected to VMU, current from the internal buffer amplifier charges up the VMU
terminal voltage. After a long time charge, the increased terminal voltage is
discharged by connecting DUT, which may damage the DUT.

To solve this problem:

• Set the VMU input DISCHARGE function to ON.

This function connects the discharge resistors to the VMU inputs internally. The
resistors are automatically disconnected from the VMU in the measurement
state.

Agilent 4155C/4156C If You Have a Problem, Edition 1 2-9

When You Make a Measurement
If You Get Unexpected Data when Performing Sampling Measurement

If You Get Unexpected Data when Performing Sampling Measurement

If initial interval is set to a short time and if FILTER ON is set, you may get
unwanted data. FILTER ON causes a slower rise time, so short initial interval will
sample during this rise time.

To solve this problem:

• Set FILTER field to OFF if you set initial interval to a short time.

Some data may be skipped because measurement takes a long time. Measurement
takes a long time if measurement is performed in a low current range, if many
measurement channels are set up, or if analysis, such as moving a marker, is
performed during measurements.

To solve this problem:

• Measure current using a fixed range that is more than 10 mA. For measurement
ranges 10 mA or less, measurement takes longer than the specified integration
time.

• Decrease measurement channels to reduce measurement time.

Note that the number of measurement channels automatically increases if you do
both the following: force voltage from channels that are connected to R-Box and
display the voltage values or use voltage values in user functions. The channels
automatically measure current, which is used to compensate the voltage values.

• Do not perform analysis operation during measurement state

2-10 Agilent 4155C/4156C If You Have a Problem, Edition 1

3 If Errors Occur

Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If the 4155C/4156C is not operated correctly, or if diagnostics or calibration fails,
error codes and error messages are displayed.

If measurement or forcing stress are not performed correctly, measurement data
status is displayed at bottom of GRAPHICS, LIST, KNOB SWEEP, or STRESS
FORCE screen.

This chapter describes the following:

•“If Errors Occur when You Perform Self-calibration or Diagnostics”

•“If Errors Occur when You Operate the 4155C/4156C”

•“If a Measurement Data Status is Displayed”

3-2 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Perform Self-calibration or Diagnostics

If Errors Occur when You Perform
Self-calibration or Diagnostics

The following are the error codes that are displayed at the bottom of the SYSTEM:
SELF-CALIBRATION/DIAGNOSTICS screen if errors occur when you perform
self-calibration or diagnostics.

If errors occur, write down the displayed error codes and contact the nearest Agilent
Technologies Sales and Service office. Up to seven error codes can be displayed at
the bottom of the SYSTEM: SELF-CALIBRATION/DIAGNOSTICS screen. To
display the error codes, move pointer to a desired test item.

Error codes for measurement unit

The following are the error codes for measurement units. Error codes are 5-digit
numbers.

1xxyy

• xx: measurement unit

• 00: VSU1,2 and VMU1,2

• 01 to 06: SMU1 to SMU6

• 07: PGU1,2

• 08: GNDU

• 09: AD converter

• yy: error number

1xx05 AD converter failed ROM or RAM self-test. Measurement unit failed

AD converter test as a pretest for calibration or self-test.

1xx06 Successive approximation AD converter failed. Measurement unit

failed AD converter test as a pretest for calibration or self-test.

1xx07 Integrating type AD converter failed. Measurement unit failed AD

converter test as a pretest for calibration or self-test.

1xx08 AD converter test reached timeout. Measurement unit failed AD

converter test as a pretest for calibration or self-test.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-3

If Errors Occur
If Errors Occur when You Perform Self-calibration or Diagnostics

1xx11 Overvoltage occurred for a measurement unit.

1xx12 Overcurrent occurred for a measurement unit.

1xx15 Measurement units that are not supported are detected.

1xx19 Emergency occurred but the cause is unknown. This is displayed, for

example, when unit is known but cause is unknown.

1xx90 AD converter test reached timeout during calibration or self-test for a

measurement unit.

1xx91 FIFO (first-in, first-out) for AD converter overflowed because SMU

controller takes long time to read measurement data.

1xx92 Calibration or diagnostics was aborted by an emergency or *RST

command.

1xx94 4155C/4156C was turned on before 41501A/B.

1xx97 Communication failed between HOST controller and SMU controller.

Or calibration/diagnostics was performed, but HOST controller
couldn't receive the result from SMU controller.

10030 VSUs and VMUs failed default test of calibration.

10031 VSUs and VMUs failed function check.

10032 VSUs failed gain or offset calibration.

10033 VMUs failed gain or offset calibration.

10034 VMUs failed differential mode 2 V range gain or offset calibration.

10035 VSUs failed gain and offset calibration, VMUs failed gain and offset

calibration, or VMU failed differential mode 2 V range gain and offset
calibration.

10036 VMUs failed differential mode 0.2 V range gain or offset measurement.

10037 VMUs failed differential mode 0.2 V range gain and offset calibration.

10038 VMUs and VSUs failed CMR (Common Mode Rejection) amp

adjustment.

10040 VSU1 and VMU1 failed ±20 V measurement self-test in 20 V range.

10041 VSU2 and VMU2 failed ±20 V measurement self-test in 20 V range.

10042 VSU1 and VMU2 failed ±20 V measurement self-test in 20 V range.

10043 VMU2 and VMU1 failed ±20 V measurement self-test in 20 V range.

3-4 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Perform Self-calibration or Diagnostics

10044 VSU1 and VMU1 failed ±2 V measurement self-test in 2 V range.

10045 VSU2 and VMU2 failed ±2 V measurement self-test in 2 V range.

10046 VSU1 and VMU2 failed ±2 V measurement self-test in 2 V range.

10047 VSU2 and VMU1 failed ±2 V measurement self-test in 2 V range.

10048 VMUs and VSUs failed differential 2 V range self-test. This test

measures ±2 V by VMUs in differential mode. (VSU1 is connected to
VMU1, and VSU2 is connected to VMU2. VSU1 forces 0 V. VSU2
forces 2 V).

10049 VMUs and VSUs failed differential 2 V range self-test. This test

measures 0 V by VMUs in differential mode. (VSU1 is connected to
VMU1, and VSU2 is connected to VMU2. VSU1 forces 0 V.)

10050 VMUs and VSUs failed differential 0.2 V range self-test. This test

measures 0 V by VMUs in differential mode. (VSU1 is connected to
VMU1, and VSU2 is connected to VMU2. VSU1 forces 0 V.)

10051 VMUs and VSUs failed differential 2 V range self-test. This test

measures 0 V by VMUs in differential mode. (VSU2 is connected to
VMU1 and 2, and forces 0 V.)

10052 VMUs and VSUs failed differential 0.2 V range self-test. This test

measures 0 V by VMUs in differential mode. (VSU2 is connected to
VMU1 and 2, and forces 0 V.)

10x20 SMU failed function check.

10x21 SMU failed CMR (Common Mode Rejection) amp calibration.

10x22 SMU failed oscillation detector test.

10x23 SMU failed V set and V measure calibration.

10x24 SMU failed I set and I measure calibration.

10x25 SMU failed I bias test.

10x26 SMU failed V switch test.

10760 PGU1 failed pulse gain calibration.

10761 PGU2 failed pulse gain calibration.

10762 PGU1 failed pulse offset calibration.

10763 PGU2 failed pulse offset calibration.

10764 PGU1 failed voltage calibration of base value.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-5

If Errors Occur
If Errors Occur when You Perform Self-calibration or Diagnostics

10765 PGU2 failed voltage calibration of base value.

10766 PGU1 failed leading time calibration.

10767 PGU2 failed leading time calibration.

10768 PGU1 failed trailing time calibration.

10769 PGU2 failed trailing time calibration.

10770 PGU1 failed slope offset calibration.

10771 PGU2 failed slope offset calibration.

10772 PGU1 failed slope sampling calibration.

10773 PGU2 failed slope sampling calibration.

10875 GNDU failed offset calibration.

10905 AD converter failed ROM or RAM self-test.

10906 Successive approximation AD converter failed calibration or self-test.

10907 Integrating type AD converter failed calibration or self-test.

10908 AD converter reached timeout. AD converter did not return completion

status within certain time after sending calibration or self-test
command.

3-6 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Perform Self-calibration or Diagnostics

Error code for CPU and peripherals

The following are the error codes for CPU and peripherals. Error codes are 5-digit
numbers.

2wwwz

• www: test item number (on SYSTEM: SELF-CALIBRATION/DIAGNOSTICS
screen).

• z: test number

23010 Host DRAM failed self-test.

23021 Host ROM failed checksum test.

23022 Host SRAM failed read and write test.

23023 EEPROM failed read and write test.

23030 Real-time clock failed timer test.

23040 GPIB controller failed self-test. This test sets some settings, then

checks the status.

23050 Parallel interface controller failed self-test. This test sets some settings,

then checks the status.

23061 Host controller sends a command and does not receive acknowledge

from SMU controller.

23062 Host controller failed receiving response from SMU controller by

sending a command.

23071 SMU controller ROM failed checksum test.

23072 SMU controller on-board SRAM failed read and write test.

23073 SMU controller internal SRAM failed read and write test.

23074 SMU controller internal timer failed self-test.

23075 SMU controller timer does not operate with correct frequency.

23076 SMU controller failed power on self-test.

23077 SMU controller test gets timeout.

23080 Access to graphics system processor failed read and write test.

23091 Graphic memories (SRAM) failed read and write test.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-7

If Errors Occur
If Errors Occur when You Perform Self-calibration or Diagnostics

23092 Graphic memories (VRAM) failed read and write test.

24017 Parallel interface failed data line test.

24018 Parallel interface failed control line test.

24021 Trigger output test failed or reached timeout.

24022 Trigger input test failed.

24041 Flexible disk drive controller test failed.

24042 Flexible disk drive 5 V power line test failed.

24051 Flexible disk drive failed diskette change test.

24052 Flexible disk drive failed read and write test.

24062 12 V source on post regulator is not output.

24063 15 V source on post regulator is not output.

24064 3 V source on post regulator is not output.

24065 LAN interface test failed.

24071 A front-panel key is stuck in pressed position.

24072 Front key assembly may be disconnected.

24073 Front-panel key controller is not functioning properly.

24100 External key controller failed self-test.

24120 Selector test reached timeout.

24130 R-Box test reached timeout.

3-8 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

If Errors Occur when You Operate the
4155C/4156C

The following error codes and messages can occur when operating the
4155C/4156C. The error codes and messages are displayed in a message window or
in the message display area at the bottom of the screen.

1 Syntax error. Input should be integer number.

3 Syntax error. Input should be real number.

4 Syntax error. Unrecognized parameter.

5 Illegal setup. The parameter is out of range.

6 DATA buffer full. Too many APPEND.

7 DATA buffer full. Too many points.

8 Cannot define more than 6 User Vars.

9 Syntax error. First char should be Alphabet.

10 Syntax error. Must be alphanumeric.

11 Name must be set for user function/variable.

Name setup cannot be omitted when setting a user function or a user
variable name.

12 Syntax error. Unknown variable name.

13 System error. HOSTC received invalid data.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

14 System error. Unable to communicate with SMUC.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

15 System error. Illegal command to SMUC.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-9

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

16 Illegal operation. Too many LIST data.

17 Unable to display data list. Not enough memory.

18 Device I/O error. Unable to print out.

The 4155C/4156C, printer, or plotter may be broken. Contact the
nearest Agilent Technologies sales and service office.

19 Filer error. File name is required.

20 Filer error. File Type is required.

21 System error. Realtime clock has problem.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

22 Not 4155/4156 file.

23 File read error. Invalid setup for this model.

24 File may be corrupt.

25 Zero offset meas failed for <unit name>.

Offset value is too large, so Zero offset measurement is aborted.

26 Too big offset for 10 pA Range of <unit name>.

Offset value is too large, so offset cannot be canceled perfectly.

27 System busy. Measuring.

28 System busy. Forcing stress.

29 System error. EEPROM write error.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

30 Fixture open. Measurement aborted.

31 Auto calibration was aborted.

32 Auto calibration failed.

33 No data in internal memory.

34 Illegal data. File may be corrupt.

35 System busy. Unable to save/get when MEAS/STR.

36 System busy. Unable to change Y-axis.

3-10 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

37 System error. SMUC lost data.

The 4155C/4156C may be broken. Contact the nearest Agilent
Technologies Sales and Service office.

38 Buffer overflowed. Aborted.

39 Syntax error. Undisplayable character.

40 Illegal setup. One unit assigned several CH.

41 Illegal disk. Revision mismatch.

42 Read error occurred.

43 File name is not LIF type.

44 File name is not DOS type.

45 File name is not LIF/DOS type.

46 Volume label is not LIF type.

47 Volume label is not DOS type.

48 Incorrect memory number.

49 Source and Target are same.

50 Unable to copy. Memory full.

51 Unable to copy. SRC and TGT mem num is same.

You cannot specify same memory number in both SOURCE and
TARGET name fields.

52 Illegal suffix.

53 System busy. Emergency handling.

54 System busy. Measuring.

55 System busy. Executing cal/diag.

56 System busy. Executing auto calibration.

57 System busy. Printing out hard copy.

58 Unable to copy 4145 data file to memory.

59 Unable to graph plot. Recover error state.

Unable to print out or plot out when error message is displayed.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-11

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

60 Cal/diag must be performed in the idle state.

Calibration and Diagnostics cannot be performed unless the
4155C/4156C is in the idle state. For example, this error is displayed if
the SCPI calibration command is sent when the 4155C/4156C is not in
the idle state.

61 ADC time out.

The AD converter has caused a time out. Perform 109: ADC test on the
SYSTEM: SELF-CALIBRATION/DIAGNOSTICS screen. If this test
fails, the 4155C/4156C may need service. Contact the nearest Agilent
Technologies Sales and Service office.

62 ADC FIFO overflow.

The AD converter has caused a FIFO overflow. A data transfer error
occurred between the AD converter and the SMUC. The 4155C/4156C
may need service. Contact the nearest Agilent Technologies Sales and
Service office.

63 SMUC failed to send data to HOSTC.

The SMU controller failed to send data to the host controller. Retry the
measurement. If this error is still displayed, recycle the power by
turning the instrument off and then on again.

64 TIFF format supports SCREEN DUMP only.

The TIFF format is only supported by the SCREEN DUMP function.

65 TIFF image can only be written to a FILE.

A TIFF image can only be written to a FILE. The 4155C/4156C cannot
output TIFF format images to a printer or plotter.

66 HR TIFF format supports DUMP and GRAPH PLOT.

A high resolution TIFF image is only supported by the DUMP and
GRAPH PLOT functions.

67 HR TIFF image can only be written to a FILE.

A high resolution TIFF image can only be written to a FILE.

100 VAR1 is not assigned.

101 VAR1 assigned to multiple Channels.

102 VAR2 assigned to multiple Channels

103 VAR1' assigned to multiple Channels.

3-12 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur when You Operate the 4155C/4156C

104 VAR1 and VAR1' must be same MODE.

105 Cannot set multiple SMUs to pulse mode

106 Cannot use VAR when SAMPLING.

107 Cannot use SMU pulse when SAMPLING.

108 Duplicate variable names exist.

109 The setup is not finished.

110 Standby chan cannot use R-BOX resistor

For standby channel, you cannot use R-Box resistor.

111 Common chan cannot use R-BOX resistor.

For common mode channel, you cannot use R-Box resistor.

112 VAR1 step number is out of range.

113 START and STOP have different sign.

115 SMU pulse Period must be >= Width+4ms.

116 VAR1 output power too large for unit.

If Errors Occur

117 VAR1' output power too large for unit.

118 VAR2 output power too large for unit.

119 TOT SMP TM=AUTO is for LINEAR only.

AUTO can be specified for total sampling time only when LINEAR
sampling mode is selected.

120 Only LINEAR when init int <= 480 us.

When initial interval is set to 480 ms or less, you cannot specify LOG or
THINNED-OUT sampling mode.

121 For LINEAR set AUTO if init int<=480us

When initial interval is set to 480 ms or less and when LINEAR
sampling mode is set, AUTO must be set in TOTAL SAMP. TIME
field.

122 TOT SP TM must be>=INIT INT(NOofSMP-1)

Total sampling time must be set in the following range:
total sampling time ³ initial interval ´ (number of samples -1)

123 STOP CONDITION NAME is not set.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-13

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

124 PGU pulse Period must be > Width.

125 PGU pulse Period must be >= Delay.

126 PG leading/trailing must be same range

PGU leading and trailing time must be set in the same range. For details
about the ranges, see User's Guide: Measurement and Analysis.

127 PGU Leading must be <= 0.8 ´ WIDTH.

Leading time must satisfy the following equation.
leading time £ pulse width ´ 0.8

128 PGU Trailing must be <= 0.8 ´ (Peri-Wid).

Trailing time must satisfy the following equation.
trailing time £ (pulse period - pulse width) ´ 0.8

129 SMU I range must be <= Compliance range.

130 SYNC channel is not assigned.

At least one SYNC channel must be specified.

131 Assigned more than 4 SYNC channels.

132 Set INIT INT>=2ms for multi-CH MEAS.

When you perform multi-channel measurements, initial interval must
be 2 ms or more.

133 Use FIXED range when INIT INT<2ms.

When you use auto ranging or limited auto ranging measurement, you
must set initial interval to 2 ms or more.

134 Cannot disable STBY-ON ch in stress.

On STRESS: CHANNEL DEFINITION screen, you cannot disable
(delete entries in row) channels that are set to STBY ON on the
CHANNELS: CHANNEL DEFINITION screen.

135 Undefined symbol in user function.

136 Syntax error in user function.

137 Too few arguments in user function.

138 Too many arguments in user function.

139 User function area is full.

140 Recursive call in user function.

3-14 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

141 User function is undefined.

142 Stack overflow in user function.

143 COMMON channel FCTN must be CONST.

144 COMMON channel FCTN must be NSYNC.

145 System busy. Unable to change page when MEAS.

146 System busy. Unable to change page when STRS.

147 Ineffective page in this setup.

148 X axis is not assigned.

149 Y1 axis is not assigned.

150 ENABLE DELAY must be <= 32767 ´ INIT INT

For sampling measurements, when stop condition is set to ENABLE,
enable delay must be initial interval ´ 32767 or less.

151 No unit is set to STANDBY ON.

152 System busy. MEASURING (or 4145 USER MODE).

153 MIN, MAX have different sign in LOG.

154 Can do such operation only for USER VAR.

155 Illegal setup. The name was already used.

156 User variable is used in user function.

If a user variable is used in user functions, the user variable cannot be
deleted.

157 AUTO Analysis is undefined.

158 TOT SAMP TIME must be<=INIT INT ´ 32767.

Total sampling time must be initial interval ´ 32767 or less and

11

1 ´ 10

or less.

159 Measure channel is not assigned.

160 Unable to find approximate data.

161 Illegal graph scale setup.

163 The Sweep/Pulse Polarity is not same.

164 SYNC can not be set for standby CH.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-15

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

165 Set value is too small for range.

For LOG sweep measurement, start and stop value must be equal or
more than setup resolution. For sweep measurement, step value of
VAR1 and VAR2 must be equal or more than setup resolution.

166 PGU Peak/Base difference must be <= 40V

170 Use Sweep/Bias instead of SMU Pulse.

171 Knob Sweep sets VAR1' to CONST.

If you set VAR1' for knob sweep measurement, the VAR1' channel
forces a constant value equal to START value. VAR1' cannot be a
sweep source for Knob Sweep measurement.

172 Cannot do SAMPLING when Knob Sweep.

173 |STEP| must be <= |STOP-START|.

174 Cannot set CONT AT ANY if PCOMP is ON.

When you set power compliance, you cannot select CONT AT ANY
secondary softkey.

175 CONST setup must be <= unit output range.

176 Pulse BASE must be <= unit output range.

177 PGU pulse WIDTH must be >= setup res.

Pulse width of PGUs must be greater than or equal to unit setup
resolution.

178 TRIG OUT DELAY is too long.

Trigger out delay must be 32.7 ms or pulse width you specified,
whichever is shorter.

179 Cannot ENABLE stop if INIT INT < 2 ms.

When initial interval is set to less than 2 ms, you cannot set stop
condition.

180 Illegal setup. Target module is not installed.

181 Illegal setup. Invalid command.

182 Cannot define more than 6 User functions.

183 Cannot define more than 8 data vars in lists.

184 Cannot define more than 2 display data vars.

3-16 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

185 ASCII format does not allow block transfer.

186 Block size mismatched with data format.

187 Y2 axis is not assigned.

188 List name is not assigned.

189 The specified name is not list name.

190 Illegal file type is requested.

191 System busy. Printing out hard copy.

192 Unable to set. Another controller is on bus.

193 Unable to specify this name here.

194 PGU Pulse DELAY must be >= setup res.

PGU pulse delay time must be ³ setup resolution.

195 Cal/Diag failed. Cannot use unit.

196 Compliance too low to force pulse.

197 Compliance too high to force pulse.

198 Two VPULSE PGUs must be same STBY.

199 Two VPULSE PGUs must be same FCTN.

200 Improper parameter for file operation.

An option for the file operation command has been set up incorrectly.

201 System error. Filer memory overflow.

202 Filer error. Integer overflow.

203 Bad volume specifier.

Volume label for mass storage is incorrect. Initialization may have been
performed on an incompatible system, or the disk may be defective.

204 Filer error. File type is wrong.

205 Filer error. EOF found.

206 Filer error. EOR found.

207 File error. Illegal DISK parameter.

Illegal disk parameter was detected. The mass storage device is set up
incorrectly.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-17

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

208 System error. Controller not found.

Unable to access the file system. The file system controller cannot be
found. The 4155C/4156C may need service. Contact the nearest
Agilent Technologies Sales and Service office.

210 File error. Unable to execute. File open.

Unable to perform the requested file operation. The file is already open.
Close the file and retry the operation.

211 Unable to operate the device. File is open.

Unable to perform the requested file operation on the specified device
because the device has a file open.

212 File error. DISK or DISK drive may be broken.

DISK or DISK drive hardware may be in need of service.

213 Filer error. DISK record is not found.

214 File error. DISK record address error.

Unable to find record because the mass storage device has a problem.

215 Filer error. DISK record data error.

216 File error. DISK system error.

The hardware or the device are causing a problem.

217 File error. Bad volume label.

The mass storage has an incorrect volume label. Verify the volume
number is set correctly.

218 System error. No interface found.

The network interface was not found because of a wrong select code
setup. Verify the select code is set correctly.

219 File error. Device timeout.

Time-out occurred on the device.

220 Filer error. Undefined I/O path.

221 Filer error. Permission denied.

222 File error. Too many files open.

Unable to open multiple files at the same time. Close the file that is
currently open before opening a second file.

3-18 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

223 Unable to PURGE the file or directory.

Unable to purge the file or the directory, for example, permission
denied.

224 Filer error. The directory is not empty.

225 Filer error. No DISK in the drive.

226 Filer error. Initialization failed.

227 Filer error. Invalid DISK volume label.

228 File error. DISK volume label is undefined.

Volume label is undefined or was not found. Verify the volume number
is set correctly.

229 Filer error. DISK is not initialized.

230 Filer error. Checkread error.

231 Filer error. Bad HFS DISK.

232 Filer error. DISK is full.

233 Filer error. Directory is full.

234 Filer error. File name is undefined.

235 Filer error. File name is wrong.

236 Filer error. The file name is already used.

237 Filer error. Bad device type.

238 Filer error. Unable to use wildcard.

239 Filer error. Operations failed.

241 Filer error. The target type is wrong.

242 Filer error. The file is protected.

243 Filer error. DISK is protected.

244 System error. Unable to verify.

245 Filer error. Unable to copy between LIF/DOS.

246 Filer error. Reason Unknown.

265 HOLD TM must be>=0 when INIT INT>=2ms.

280 VAR1' output value is out of range.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-19

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

282 Set INIT INT > 640 us for THINNED-OUT.

When you perform thinned-out sampling measurements, the initial
interval must be more than 640 ms.

284 Sampling range must be <= 11decades.

286 Cannot execute cal/diag after power fail.

Turn on the 4155C/4156C again to perform calibration or diagnostics.

288 MEAS not finished. Incomplete data deleted.

If you press Stop front-panel key before the specified measurement
finishes, incomplete measurement data is deleted.

289 STBY ON ch MODE(MEAS/STR) must be same

290 Cannot use unit after power fail.

292 VAR1' parameters must be >= output res

Start, stop, and step value of VAR1' channel must be unit output
resolution or more.

293 Cal/Diag aborted (failed on some units).

Calibration or diagnostics was aborted by receiving *RST command.
So, some units maybe failed.

300 Over voltage is detected.

301 Over Current is detected.

302 Power failure at Main Frame.

Turn on the 4155C/4156C again. You can use filer functions after
selecting OK secondary softkey (except when this error occurs during
power-on test).

303 Power failure at Expander Box.

Turn on the 4155C/4156C again. You can use filer functions after
selecting OK secondary softkey (except when this error occurs during
power-on test).

305 Cannot shutdown Main Frame.

306 Emergency. Reason unknown.

An emergency occurred on an empty slot. Or an emergency occurred on
an existing slot, but the reason is unspecified.

3-20 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

307 Cannot shutdown Power Supply.

Turn on the 4155C/4156C again. You can use filer functions after
selecting OK secondary softkey (except when this error occurs during
power-on test).

308 Unknown emergency (SMUC time out).

Perform 305: HOSTC <--> SMUC I/F test on the SYSTEM:
SELF-CALIBRATION/DIAGNOSTICS screen. If this test fails, the
4155C/4156C may need service. Contact the nearest Agilent
Technologies Sales and Service office.

309 The SMU AND PULSE GENERATOR EXPANDER is not

turned on.

Turn on the expander, then cycle mainframe power.

310 Unsupported unit detected in Slot ##. Turn off

the power and remove the unit.

The displayed unit must be changed. Contact the nearest Agilent
Technologies Sales and Service office.

320 Not enough memory. Cannot display >=200 files.

The 4155C/4156C cannot display more than 199 files on the FILE
CATALOG because of an internal memory limitation. If you create
more than 199 files, move the additional files to another directory.

321 Too many links.

The file has too many links. Remove extra links or use symbolic links.

322 File system down or network disconnected.

Unable to access the network directory. The file system was down or
the network was disconnected.

323 The network address is already used.

A process has already been bound to the address. The current process
must finish before the new process can use the address.

324 Change dir failed. File is not a directory.

Change directory failed because you specified a file, not a directory.

325 Unable to open file. Deadlock occurred.

Unable to open the file. Deadlock occurred in the resource where you
tried to open the file.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-21

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

326 Device not present. Unsupported file type.

Device or driver was not found to open the file. Unable to open file
because the file type is not supported.

327 Interrupted system call.

The lpr driver received a signal from the system, that interrupted the
data transfer from the lpr driver.

328 lpd time out occurred. Try again ?

A time out occurred when trying to connect to the lpd server because
the lpd server did not respond.

329 lpd print server cannot be recognized.

Unable to recognize the lpd print server. Verify the address setup or
setup syntax is correct.

330 lpd server connection failed or was denied.

The lpd server connection failed, or was denied, because the lpd server
was already connected or the server was blocked.

331 lpr data transfer failed.

Data transfer from the lpr server failed because lpr data communication
was disconnected. Verify the network is working properly and check to
see if the server is up.

332 Unable to print out. Not enough device space.

Unable to print out because the device connection failed. There is not
enough available space in the buffer for the communication.

334 lpr failed data transfer. Data size mismatch.

Unable to print out because the lpr server failed data transfer. The size
of the data was not the expected size.

335 lpr Network interface is down. Try again ?

The network interface cannot be found because the network interface
for the lpr server is down.

336 Unable to print out. Reason unknown.

Network connection failed. The reason for the failure is unknown.

3-22 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

337 Cannot set 0.0.0.0 for 4155/4156 IP address.

When a valid host name for the 4155C/4156C network setup is
specified, the IP address of the 4155C/4156C cannot be set to

0.0.0.0.

338 Cannot set 0(zero) for 4155/4156 User ID.

When a valid host name for the 4155C/4156C network setup is
specified, the User Id of the 4155C/4156C cannot be set to 0 (zero).

339 No response from NFS. Try again ?

There is no response from the Network File System (NFS) when trying
to mount a network disk. Verify the network is operating properly and
the file export executed properly.

340 Host name must be <= 15 alphanumeric character.

The 4155C/4156C host name must be 15 or less alphanumeric
characters.

344 System busy. Cannot execute US/US42 command.

Unable to move to FLEX command control mode, because the US or
US42 command cannot be executed while system is busy; making

measurement, operating file functions, executing calibration or
diagnostics, printing, emergency, and so on.

345 Change display page. DISP OFF(0) is not allowed.

Unable to enter the :DISP OFF ( or 0) command when the
4155C/4156C screen displays System screen group or KNOB SWEEP
screen.

346 Enter DISP ON(1) to execute this command.

Unable to enter the :PAGE:KSW command group,
:PAGE:SCON:KSW command, or :DIAG:TEST test_no (test_no:

201 to 413) command when the 4155C/4156C screen is set to the
update disable state by the :DISP OFF (or 0) command.

350 Unable to transfer data. Name buffer full.

Cannot maintain the buffer required for transferring data.

351 File operation was interrupted by system call.

The lpr driver received a signal from the system, which interrupted an
open, read, or write operation.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-23

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

352 Network is down after receiving a reset.

The network is down after receiving a reset. Try again after network
recovers.

353 Network is down. No response from server.

Network is down. There in no response from the server.

354 Operation canceled.

Operation canceled by user. For example, an abort command was sent.

355 Cannot create file/dir. Change permission.

Write permission is not set for the directory where you are trying to
create a file or subdirectory.

357 Unable to go to the dir. Permission denied.

Cannot move to the specified directory. To access the directory, change
the permissions.

358 Select UPDATE/ADD to update/add printer setup.

To update or add your new or modified network printer setup, the
UPDATE or ADD secondary softkey must be selected after finishing
the initial setup.

363 Duplicate file names exist.

The same file name cannot be used for multiple files.

364 No such file or directory.

Cannot find the specified file or directory.

365 Unable to read or write to directory.

A file read or write operation cannot be performed in the specified
directory.

366 Invalid argument. Check command syntax.

Specified argument did not work when executing the command. Verify
the command syntax and argument are correct.

367 Seek operation failed.

Seek for file operation failed, or append write failed to open the
specified file.

3-24 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

368 NFS Software caused connection abort.

Network file system (NFS) was disconnected. Verify the NFS server is
operating correctly.

369 Connection reset by peer. Remote disconnected.

Remote connection was terminated. Verify the remote setup and the
executed operation are correct. Verify the local and remote systems are
operating properly.

370 Unable to transfer data. Communication down.

Data cannot be transferred because the communication was shutdown.

371 NFS Connection refused.

Connection to NFS was refused. Verify the refused device was properly
exported.

372 Connection failed. Socket was not sent.

NFS Connection failed because the socket was not sent.

373 Too many levels of symbolic links.

The file is linked to itself, or the linked file is linked back to the file.

375 Cross-device link.

Unable to hard link different physical file systems. Hard link must be
done to same file system.

377 Unable to use this protocol.

Unable to use this protocol on the network.

378 This protocol is not supported.

This protocol is not supported on the network.

381 This type of protocol is not supported.

This type of protocol is not supported on the network.

383 NFS too many references, can't splice.

386 System busy. Saving/getting text files.

The 4155C/4156C cannot be interrupted by other operations. For
example, files cannot be saved or retrieved while making
measurements.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-25

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

387 Unable to access file. The file is locked.

Unable to write to this file. The file is locked by another
process.

388 No such device or address.

The 4155C/4156C cannot find the specified network device or
address. Verify the correct device file exists, the select
code/major number/minor number are correct, and that the
device is correctly connected (high speed or low speed port).

389 System busy. File operation is in progress.

File operation is in progress. During a file operation, the
4155C/4156C cannot perform other operations, such as making
measurements, changing setup fields, printing and so forth.

391 Network printer connection time out.

A time out occurred when connecting the network printer to the
print server or NFS server.

392 Network File System server is down.

Server for the Network File System is down. Contact your
network system administrator.

393 Communication to desired server failed.

Communication to desired server failed.

394 System busy. Mounting device.

When mounting a device, the 4155C/4156C cannot be
interrupted by another operation, such as making a
measurement.

400 System bug. Undefined method.

401 System bug. Invalid parameter.

402 System bug. Inconsistency.

410 Unable to display. Number must be <10001.

Unable to display the measurement results because the data size
of the result is too large. The number of the measurement
results must be less than 10001.

411 Connection failed. Set Destination

412 Address family not supported.

address.

Network connection to destination failed. Verify the destination
address is set correctly.

Specified address family is not supported for the currently used
socket.

3-26 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If Errors Occur when You Operate the 4155C/4156C

415 SUBNET MASK must be n.n.n.n (n:numeric value).

An invalid character was set to SUBNET MASK. The format is n.n.n.n,
a string of up to 15 characters, where n is 3-digit maximum numeric
value.

416 GATEWAY must be n.n.n.n (n:numeric value).

An invalid character was set to GATEWAY. The format is n.n.n.n, a
string of up to 15 characters, where n is 3-digit maximum numeric
value.

417 GPIB busy. Cannot control E5250A.

Cannot control the E5250A because the GPIB is busy. Try again when
the GPIB is ready.

418 Timeout occurred to control E5250A.

Cannot find the E5250A at the specified GPIB address. Turn the
E5250A on, and set the E5250A control mode to ON again. Confirm
the cable connection and GPIB address setting are correct, and then try
again.

419 4155/4156 must be system controller.

Set the 4155C/4156C to SYSTEM CONTROLLER to use the built-in
E5250A control function. If an external computer controls the
4155C/4156C, pass the active controller capability to the 4155C/4156C
to use this function.

420 E5250A control was rejected.

E5250A control command was rejected due to a GPIB error, an
interrupt, or an incorrect address setting. Confirm the cable connection
and GPIB address setting are correct, and then try again.

421 Improper response from E5250A.

An improper response was returned from the E5250A. Turn the
instrument off and on, and then try again. The E5250A could be
defective.

422 Invalid command or parameter for E5250A.

An invalid command was sent to the E5250A. Turn the instruments off
and on, and then try again. The E5250A or 4155C/4156C could be
defective.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-27

If Errors Occur
If Errors Occur when You Operate the 4155C/4156C

423 E5252A must be in E5250A slot 1.

Install the E5252A matrix card into slot 1 of the E5250A. The E5252A
must be installed in the E5250A slots continuously, starting with slot
number 1.

424 Apply or cancel the setup change.

Before closing the E5250A CONNECTION SETUP screen, select the
APPLY SETUP, APPLY OPEN ALL, or CANCEL SETUP CHANGE
softkey.

425 E5250A control mode must be ON.

To enable the built-in E5250A control function, the E5250A control
mode must be ON. This makes it possible to display the E5250A
connection setup screen, to control the E5250A, and to access the
matrix setup data file (.MAT).

426 Too many relays closed. Max 200.

E5250A connection setup error. Too many physical relays have been
closed. To close new relays, must open some relays. Maximum 200
relays can be closed.

428 VAR1 channel must be V mode in QSCV measurement.

The VAR1 channel must be set to the voltage source when making a
quasi-static CV measurement. Set the VAR1 channel mode to V.

429 Knob sweep is not allowed in QSCV measurement.

The knob sweep function is not available during the quasi-static CV
measurement.

430 Integration time too short for QSCV zero cancel.

The integration time specified is too short to execute the zero offset
cancel during the quasi-static CV measurement. Set a longer value.

431 Offset value too large for QSCV zero cancel.

The measurement unit measured a leakage current greater than 70 % of
the measurement range of the QSCV zero offset measurement. Use the
next greater measurement range.

3-28 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If a Measurement Data Status is Displayed

If a Measurement Data Status is Displayed

If measurement or stress force cannot be performed correctly, the measurement data
status is displayed at the bottom of the GRAPHICS, LIST, KNOB SWEEP, or
STRESS FORCE screen. The status indicates hardware and calculation errors.

The status format depends on the displayed screen as follows:

GRAPH/LIST: GRAPHICS and KNOB SWEEP screen

Status is displayed in following format:

STATUS: AB AB AB ( A A A A A A A A C )

• AB AB AB is for X, Y1, and Y2 axis respectively. No Y2 for KNOB SWEEP.

• A A A A A A A A C is for SMU1 to SMU6, VMU1, VMU2, and PGU1/2

respectively.

Where, A, B, and C mean as follows:

A hardware status error. If multiple errors occur, numbers are

added and displayed as a hexadecimal number.

• 1 : AD converter overflow.

• 2 : Oscillation

• 4 : Other channel reached compliance limit.

• 8 : This channel reached compliance limit.

B data error. If multiple errors occur, numbers are added and

displayed as a hexadecimal number.

• 1 : stack register overflow

• 2 : calculation error

• 4 : only one data for delta measurement. At least 2 data

needed.

C PGU status

• 1 : PGU average output current exceeds 100 mA.

For non-measurement channels, "_" is displayed.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-29

If Errors Occur
If a Measurement Data Status is Displayed

GRAPH/LIST: LIST screen

Status on GRAPH/LIST: LIST screen is displayed in following format:

STATUS: AB AB AB AB AB AB AB AB ( A A A A A A A A C )

• AB AB AB AB AB AB AB AB is for the up to 8 LIST variables that can be set up.

• A A A A A A A A C is for SMU1 to SMU6, VMU1, VMU2, and PGU1/2

respectively.

Where, A, B, and C mean as follows:

A hardware status error. If multiple errors occur, numbers are

added and displayed as a hexadecimal number.

• 1 : AD converter overflow.

• 2 : Oscillation

• 4 : Other channel reached compliance limit.

• 8 : This channel reached compliance limit.

B data error. If multiple errors occur, numbers are added and

displayed as a hexadecimal number.

• 1 : stack register overflow

• 2 : calculation error

• 4 : only one data for delta measurement. At least 2 data

needed.

C PGU status

• 1 : PGU average output current exceeds 100 mA.

For non-measurement channels, "_" is displayed.

3-30 Agilent 4155C/4156C If You Have a Problem, Edition 1

If Errors Occur

If a Measurement Data Status is Displayed

STRESS: STRESS FORCE screen

Status on STRESS: STRESS FORCE screen is displayed in following format:

STATUS:A C

Where, A and C mean as follows:

A hardware status error. If multiple errors occur, numbers are

added and displayed as a hexadecimal number.

• 2 : Oscillation.

• 4 : Some channel has reached compliance limit.

C PGU status

• 1 : PGU average current exceeds 100 mA.

Agilent 4155C/4156C If You Have a Problem, Edition 1 3-31