No p art o f this manu al may be re produce d in
any form or by any means (including electronic storage and retrieval or translation
into a foreign language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
U2351-90203
Edition
Second Edition, August 23, 2010
Printed in Malaysia
Agilent Technologies, Inc.
Bayan Lepas Free Industrial Zone,
11900 Penang, Malaysia
Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice,
in future editions. Further, to the maximum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a particular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the separate agreement shall control.
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
U.S. Government Restricted Rights. Software and technical data rights granted to
the federal government include only those
rights customarily provided to end user customers. Agilent provides this customary
commercial license in Software and technical data pursuant to FAR 12.211 (Technical
Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Computer Software Documentation).
Safety Notices
CAUTION
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
WARNING
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated conditions are fully understood and
met.
IIU2300A Series DAQ Service Guide
Safety Information
The following general safety precautions must be observed during all phases of this instrument. Failure to comply
with these precautions or with specific warnings elsewhere in this manual violates safety standards of design,
manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the
customer’s failure to comply with these requirements.
Safety Symbols
The following symbols indicate that precautions must be taken to maintain safe
operation of the instrument.
Direct current
Warni ng
Regulatory Markings
The CE mark shows that the product complies with all the
relevant European Legal Directives (if accompanied by a year, it
signifies when the design was proven).
The CSA mark is a registered trademark of the Canadian Standards Association. A CSA mark with the indicators "C" and "US"
means that the product is certified for both the U.S. and Canadian
markets, to the applicable American and Canadian standards.
The UL Mark is a registered trademark of Underwriters Laboratories Inc. UL listing mark with the indicators "C" and "US” indicates the product compliance with both Canadian and U.S.
requirements.
The C-tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the
Australian EMC Framework regulations under the terms of the
Radio Communications Act of 1992.
U2300A Series DAQ Service GuideIII
General Safety Information
WARNING
CAUTION
• Do not use the device if it is damaged.Before you use the device,
inspect the case. Look for cracks or missing plastic. Do not operate the
device around explosive gas, vapor or dust.
• Do not apply more than the rated voltage (as marked on the device)
between terminals, or between terminal and external ground.
• Always use the device with the cables provided.
• Observe all markings on the device before connecting to the device.
• Turn off the device and application system power before connecting to
the I/O terminals.
• When servicing the device, use only specified replacement parts.
• Do not operate the device with the removable cover removed or
loosened.
• Do not connect any cables and terminal block prior to performing
self-test process.
• Use only the power adapter supplied by the manufacturer to avoid any
unexpected hazards.
• Do not load the output terminals above the specified current limits.
Applying excessive voltage or overloading the device will cause
irreversible damage to the circuitry.
• Applying excessive voltage or overloading the input terminal will
damage the device permanently.
• If the device is used in a manner not specified by the manufacturer, the
protection provided by the device may be impaired.
• Always use dry cloth to clean the device. Do not use ethyl alcohol or
any other volatile liquid to clean the device.
• Do not permit any blockage of the ventilation holes of the device.
IVU2300A Series DAQ Service Guide
Waste Electrical and Electronic Equipment (WEEE) Directive
2002/96/EC
This instrument complies with the WEEE Directive (2002/96/EC) marking
requirement. This affixed product label indicates that you must not discard this
electrical/electronic product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is shown as below:
Do not dispose in domestic household waste
To return this unwanted instrument, contact your nearest Agilent office, or visit:
http://www.agilent.com/environment/product
for more information.
U2300A Series DAQ Service GuideV
In This Guide...
1Characteristics and Specifications 1
This chapter specifies the product specifications and electrical
measurement specifications of the U2300A Series USB
Multifunction DAQ devices.
2Calibration 15
This chapter describes the step- by- step calibration procedures that
covers hardware setup, self calibration, performance verification
procedures and adjustment procedures.
3Dismantle Procedures 41
This chapter shows the step- by- step disassemble procedures and
list the available replacement parts together with its part number
for U2300A Series USB Multifunction DAQ devices.
4Troubleshooting and Self-Test Procedures 47
This chapter includes the information on general troubleshooting
hints and self test procedures for the U2300A Series USB
Multifunction DAQ devices.
AConnector Pins Configuration 51
All the U2300A Series USB Multifunction DAQ devices pins
configuration are provided in the appendix.
BTest Limits 57
This appendix provides the test limits of analog input and analog
output for the U2300A Series USB Multifunction DAQ devices.
up to 1500 pF
Power-on state0 V steady stateN/A0 V steady stateN/A
Trigger sourcesExternal
analog/digital trigger,
SSI/star trigger
[1]
Trigger modesPost-trigger and
delay-trigger
FIFO buffer size1 channel: Maximum 8 MSa
2 channels: Maximum 4 MSa/ch
Function generation mode Sine-wave, square-wave, triangle,
sawtooth and noise waveform
N/AExternal
analog/digital trigger,
SSI/star trigger
[1]
N/APost-trigger and
delay-trigger
N/A1 channel: Maximum 8 MSa
2 channels: Maximum 4 MSa/ch
N/ASine-wave, square-wave, triangle,
sawtooth and noise waveform
N/A
N/A
N/A
N/A
N/A
N/A
Digital I/O
Model Number U2351A | U2352A | U2353A | U2354A
Number of bits 24-bit programmable input/output
Compatibility TTL
Input voltage V
= 0.7 V maximum, IIL = 10 µA maximum
IL
VIH = 2.0 V minimum, IIH = 10 µA maximum
Input voltage range–0.5 V to +5.5 V
Output voltageV
= 0.45 V maximum, IOL = 8 mA maximum
OL
= 2.4 V minimum, IOH = 400 µA maximum
V
OH
U2300A Series DAQ Service Guide3
1Characteristics and Specifications
General Purpose Digital Counter
Model Number U2351A | U2352A | U2353A | U2354A
Maximum count(2³¹-1) bits
Number of channels Two independent up/down counter
Compatibility TTL
Clock sourceInternal or external
Base clock available 48 MHz
Maximum clock source frequency12 MHz
Input frequency range0.1 Hz to 6 MHz at 50% duty cycle
Pulse width measurement range0.167 µs to 178.956 s
Analog Trigger
Model Number U2351A | U2352A | U2353A | U2354A
Trigger sourceAll analog input channels, External analog trigger (EXTA_TRIG)
Trigger level±Full Scale for internal; ±10 V for external
Trigger conditionsAbove high, below low and window (software selectable)
Trigger level resolution8 bits
Bandwidth 400 kHz
Input Impedance for EXTA_TRIG20 kΩ
CouplingDC
Overvoltage ProtectionContinuous for ± 35 V maximum
Digital Trigger
Model Number U2351A | U2352A | U2353A | U2354A
CompatibilityTTL/CMOS
ResponseRising or falling edge
Pulse width20 ns minimum
Calibration
[3]
Model Number U2351A | U2352A | U2353A | U2354A
On board reference voltage 5 V
Temperature drift ±2 ppm/°C
Stability ±6 ppm/1000 hours
4U2300A Series DAQ Service Guide
Characteristics and Specifications1
General
Model Number U2351A | U2352A | U2353A | U2354A
Remote interfaceHi-Speed USB 2.0
Device classUSBTMC Class Device
Programmable interfaceStandard Commands for Programmable Instruments (SCPI) and IVI-COM
[1] System Synchronous Interface (SSI) and Star-trigger commands are used when
modular devices are used in instrument chassis.
[2] Maximum external reference voltage for analog output (AO_EXT_REF) is ±10 V.
[3] 20 minutes warm-up time is recommended.
[4] Refer to Figure 1-1 for more information.
U2300A Series DAQ Service Guide5
1Characteristics and Specifications
7.5
-7.5
Figure 1-1 Operational common mode voltage range
This graph shows that the common mode voltage range is tightly
linked with the output voltage. The output voltage range of the
DAQ devices is ±10 V. Therefore, the common mode voltage range
is ±7.5 V. Any operation beyond these voltage ranges may produce
unexpected and unreliable results, and should be avoided.
6U2300A Series DAQ Service Guide
Characteristics and Specifications1
High Density Multifunction DAQ Device Specifications
Tab l e 1 - 2 Product specifications for high density multifunction DAQ device
(U2355A, U2356A and U2331A)
Analog Input
Model NumberU2355AU2356AU2331A
Resolution 16 bits, no missing codes12 bits, no missing codes
Number of channels 64 SE/32 DI (software selectable/channel)
Maximum sampling rate 250 kSa/s 500 kSa/s3 MSa/s (single channel)
1 MSa/s (multi channels)
Scan list memoryUp to 100 selectable channels entries
Programmable bipolar input range ±10 V, ±5 V, ±2.5 V, ±1.25 V±10 V, ±5 V, ±2.5 V,
Input coupling DC
Input impedance 1 GΩ / 100 pF
Operational common mode voltage range±7.5 V maximum
Overvoltage protection Power on: Continuous ±30 V, Power off: Continuous ±15 V
Trig g e r s o u rc e s
External analog/digital trigger, SSI/star trigger
Trigger modes Pre-trigger, delay-trigger, post-trigger and middle-trigger
FIFO buffer size Up to 8 MSa
[1]
Analog Output
Model NumberU2355AU2356AU2331A
Resolution 12 bits
Number of channels 2
Maximum update rate 1 MSa/s
Output ranges
0 to 10 V, ±10 V, 0 to AO_EXT_REF, ±AO_EXT_REF
[2]
Output couplingDC
Output impedance0.1 Ω Typical
Stability Any passive load up to 1500 pF
Power on state0 V steady state
Trigger sources
External analog/digital trigger, SSI/star trigger
[1]
Trigger modesPost-trigger and delay-trigger
FIFO buffer size1 channel: Maximum 8 MSa, 2 channels: Maximum 4 MSa/ch
Function generation modeSine-wave, square-wave, triangle, sawtooth and noise waveform
U2300A Series DAQ Service Guide7
1Characteristics and Specifications
Digital I/O
Model NumberU2355A | U2356A | U2331A
Number of bits 24-bit programmable input/output
Compatibility TTL
Input voltage V
Input voltage range–0.5 V to +5.5 V
Output voltageV
General Purpose Digital Counter
Model NumberU2355A | U2356A | U2331A
Maximum count(2³¹-1) bits
Number of channels Two independent up/down counter
Compatibility TTL
Clock sourceInternal or external
Base clock available 48 MHz
Maximum clock source frequency12 MHz
Input frequency range0.1 Hz to 6 MHz at 50% duty cycle
Pulse width measurement range0.167 µs to 178.956 s
= 0.7 V max, IIL = 10 µA max
IL
= 2.0 V min, IIH = 10 µA max
V
IH
= 0.45 V max, I
OL
= 2.4 V min, IOH = 400 µA max
V
OH
= 8 mA max
OL
Analog trigger
Model NumberU2355A | U2356A | U2331A
Trigger sourceAll analog input channels, External analog trigger (EXTA_TRIG)
Trigger level±Full Scale for internal; ±10 V for external
Trigger conditionsAbove high, below low and window (software selectable)
Trigger level resolution8 Bits
Bandwidth 400 kHz
Input Impedance for EXTA_TRIG20 kΩ
CouplingDC
Overvoltage ProtectionContinuous for ±35 V maximum
8U2300A Series DAQ Service Guide
Characteristics and Specifications1
Digital Trigger
Model NumberU2355A | U2356A | U2331A
CompatibilityTTL/CMOS
ResponseRising or falling edge
Pulse width20 ns minimum
Calibration
[3]
Model NumberU2355A | U2356A | U2331A
On board reference 5 V
Temperature drift ±2 ppm/°C
Stability ±6 ppm/1000 hours
General
Model NumberU2355A | U2356A | U2331A
Remote interfaceHi-Speed USB 2.0
Device classUSBTMC Class Device
Programmable interfaceStandard Commands for Programmable Instruments (SCPI) and IVI-COM
[1] System Synchronous Interface (SSI) and Star-trigger commands are used when
modular devices are used in instrument chassis.
[2] Maximum external reference voltage for analog output (AO_EXT_REF) is ±10 V.
System noise1 mVrms2 mVrms1 mVrms2.5 mVrms
CMRR62 dB62 dB
Spurious-free dynamic range (SFDR)
[3]
Signal-to-noise and distortion ratio (SINAD)
Total harmonic distortion (THD)
Signal-to-noise ratio (SNR)
Effective number of bits (ENOB)
Analog Output Measurement
[3]
[3]
[3]
[1]
[3]
88 dB82 dB
80 dB78 dB
–90 dB–82 dB
80 dB78 dB
1312.6
Model NumberU2351A | U2353A
0 °C to 18 °C
Function23 °C ± 5 °C
28 °C to 45 °C
Offset Error±1 mV±4 mV
Gain Error±4 mV±5 mV
Slew rate19 V/µs
Rise time0.9 µs
Fall time0.9 µs
Settling time to 1% output error 4 µs
Driving capability5 mA
Glitch energy5 ns-V (Typical), 80 ns-V (Maximum)
10U2300A Series DAQ Service Guide
Characteristics and Specifications1
[1] Specifications are for 20 minutes of warm-up time, calibration temperature at 23 °C and
input range of ±10 V.
[2] Specifications are based on the following test conditions
Bandwidth TestModel Number Test Conditions
• –3 dB small
signal bandwidth
• 1% THD large
signal bandwidth
U2351A
U2352A
U2353A
U2354A
(DUT setting at ±10 V bipolar)
Sampling Rate:
Input voltage:
• –3 dB small signal bandwidth
• 1% THD large signal
bandwidth
Sampling Rate:
Input voltage:
• –3 dB small signal bandwidth
• 1% THD large signal
bandwidth
[3] Specifications are based on the following test conditions.
Dynamic Range TestModel Number Test Conditions
(DUT setting at ±10 V bipolar)
SFDR, THD, SINAD,
SNR, ENOB
U2351A
U2352A
U2353A
U2354A
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage:
Sampling Rate:
Fundamental Frequency:
Number of points:
Fundamental input voltage: