PCB Piezotronics 482C27 Guide

The information contained in this document supersedes all similar information that
may be found elsewhere in this manual.
Service –Due to the sophisticated
nature of the sensors and associated
instrumentation provided by PCB
Piezotronics, user servicing or repair is
not recommended and, if attempted,
may void the factory warranty. Routine
maintenance, such as the cleaning of
electrical connectors, housings, and
mounting surfaces with solutions and
techniques that will not harm the
physical material of construction, is
acceptable. Caution should be observed
to ensure that liquids are not permitted
to migrate into devices that are not
hermetically sealed. Such devices
should only be wiped with a dampened
cloth and never submerged or have
liquids poured upon them.
Repair –In the event that equipment
becomes damaged or ceases to
operate, arrangements should be made
to return the equipment to PCB
Piezotronics for repair. User servicing or
repair is not recommended and, if
attempted, may void the factory
warranty.
Calibration –Routine calibration of
sensors and associated instrumentation
is recommended as this helps build
confidence in measurement accuracy
and acquired data. Equipment
calibration cycles are typically
established by the users own quality
regimen. When in doubt about a
calibration cycle, a good “rule of thumb”
is to recalibrate on an annual basis. It is
also good practice to recalibrate after
exposure to any severe temperature
extreme, shock, load, or other
environmental influence, or prior to any
critical test.
PCB Piezotronics maintains an ISO-
9001 certified metrology laboratory and
offers calibration services, which are
accredited by A2LA to ISO/IEC 17025,
with full traceability to SI through
N.I.S.T. In addition to the normally
supplied calibration, special testing is
also available, such as: sensitivity at
elevated or cryogenic temperatures,
phase response, extended high or low
frequency response, extended range,
leak testing, hydrostatic pressure
testing, and others. For information on
standard recalibration services or
special testing, contact your local PCB
Piezotronics distributor, sales
representative, or factory customer
service representative.
Returning Equipment –Following
these procedures will ensure that your
returned materials are handled in the
most expedient manner. Before
returning any equipment to PCB
Piezotronics, contact your local
distributor, sales representative, or
factory customer service representative
to obtain a Return Warranty, Service,
Repair, and Return Policies and
Instructions Materials Authorization
(RMA) Number. This RMA number
should be clearly marked on the outside
of all package(s) and on the packing
Service, Repair, and Return
Policies and Instructions

list(s) accompanying the shipment. A
detailed account of the nature of the
problem(s) being experienced with the
equipment should also be included
inside the package(s) containing any
returned materials.
A Purchase Order, included with the
returned materials, will expedite the
turn-around of serviced equipment. It is
recommended to include authorization
on the Purchase Order for PCB to
proceed with any repairs, as long as
they do not exceed 50% of the
replacement cost of the returned
item(s). PCB will provide a price
quotation or replacement
recommendation for any item whose
repair costs would exceed 50% of
replacement cost, or any item that is not
economically feasible to repair. For
routine calibration services, the
Purchase Order should include
authorization to proceed and return at
current pricing, which can be obtained
from a factory customer service
representative.
Contact Information –International
customers should direct all inquiries to
their local distributor or sales office. A
complete list of distributors and offices
can be found at www.pcb.com.
Customers within the United States may
contact their local sales representative
or a factory customer service
representative. A complete list of sales
representatives can be found at
www.pcb.com. Toll-free telephone
numbers for a factory customer service
representative, in the division
responsible for this product, can be
found on the title page at the front of this
manual. Our ship to address and
general contact numbers are:
PCB Piezotronics, Inc.
3425 Walden Ave.
Depew, NY14043 USA
Toll-free: [phone]
24-hour SensorLineSM: [phone]
Website: www.pcb.com
E-mail: [email protected]

PCB工业监视和测量设备 - 中国RoHS2公布表
PCB Industrial Monitoring and Measuring Equipment - China RoHS 2 Disclosure Table
部件名称
有害物质
铅(Pb)
汞
(Hg)
镉
(Cd)
六价铬(Cr(VI))
多溴联苯 (PBB)
多溴二苯醚(PBDE)
住房
O
O
O
O
O
O
PCB板
X
O
O
O
O
O
电气连接器
O
O
O
O
O
O
压电晶体
X
O
O
O
O
O
环氧
O
O
O
O
O
O
铁氟龙
O
O
O
O
O
O
电子
O
O
O
O
O
O
厚膜基板
O
O
X
O
O
O
电线
O
O
O
O
O
O
电缆
X
O
O
O
O
O
塑料
O
O
O
O
O
O
焊接
X
O
O
O
O
O
铜合金/黄铜
X
O
O
O
O
O
本表格依据 SJ/T 11364 的规定编制。
O：表示该有害物质在该部件所有均质材料中的含量均在 GB/T 26572 规定的限量要求以下。
X：表示该有害物质至少在该部件的某一均质材料中的含量超出 GB/T 26572 规定的限量要求。
铅是欧洲RoHS指令2011/65/ EU附件三和附件四目前由于允许的豁免。
CHINA RoHS COMPLIANCE

DOCUMENT NUMBER: 21354
DOCUMENT REVISION: D
ECN: 46162
Component Name
Hazardous Substances
Lead
(Pb)
Mercury
(Hg)
Cadmium
(Cd)
Chromium VI
Compounds
(Cr(VI))
Polybrominated
Biphenyls
(PBB)
Polybrominated
Diphenyl
Ethers (PBDE)
Housing
O
O
O
O
O
O
PCB Board
X
O
O
O
O
O
Electrical
Connectors
O
O
O
O
O
O
Piezoelectric
Crystals
X
O
O
O
O
O
Epoxy
O
O
O
O
O
O
Teflon
O
O
O
O
O
O
Electronics
O
O
O
O
O
O
Thick Film
Substrate
O
O
X
O
O
O
Wires
O
O
O
O
O
O
Cables
X
O
O
O
O
O
Plastic
O
O
O
O
O
O
Solder
X
O
O
O
O
O
Copper Alloy/Brass
X
O
O
O
O
O
This table is prepared in accordance with the provisions of SJ/T 11364.
O: Indicates that said hazardous substance contained in all of the homogeneous materials for this part is below the limit
requirement of GB/T 26572.
X: Indicates that said hazardous substance contained in at least one of the homogeneous materials for this part is above
the limit requirement of GB/T 26572.
Lead is present due to allowed exemption in Annex III or Annex IV of the European RoHS Directive 2011/65/EU.


PCB PIEZOTRONICS, INC. 3425 WALDEN AVENUE DEPEW, NY 14043-2495 PHONE [phone] FAX [phone]
®ICP is a registered trademark of PCB Group, Inc. KS398
Manual Number: 43265
Manual Revision: D
ECO Number: 49597
SIGNAL CONDITIONER
Model 482C27
GENERAL OPERATION
MANUAL
For powering differential voltage MEMS, single ended MEMS and bridge (quarter, full, half)
sensors, this signal conditioner provides an effective method for managing small numbers of sensor
channels. A simple command set, entered through industry standard interface, allows the user to
generate powerful application-specific programs to automate system testing. A front panel interface
is provided for easy control and operation. This conditioner also includes ICP® power.

i
Table of Contents
Table of Contents i
1-0. INTRODUCTION AND SPECIFICATIONS 1
1-1. Introduction: Safety Considerations 1
1-2. Model 482C27 System Description 2
1-2.1 Model 482C27 ICP®Input/Output Mode 2
1-3. Block Diagram 3
1-4. Installation 3
1-4.1 Grounding Techniques 3
1-4.2 Quick Set-up Instructions 4
1-5. Operation: Standard AC Line 7
1-6. Maintenance and Repair 7
2-0. FRONT PANEL MODULE CONTROL 7
2-1. Introduction 7
2-2. Unit Initialization 7
The factory defaults are: 7
2-3. Main Menu Format 7
2-4. Submenu Format and Command Selections 8
3-0. THEORY OF OPERATION 19
3-1. Sensor Excitation 19
3-2. Input Protection 20
3-3. Input Fault Detection 20
3-4. Input Interface 20
3-5. Normalized Output Sensitivity 20
3.6 Auto Scaling and Overload Detection 21
3-6.1 Auto Scale 21
3-6.2 Overload 21
3-7. Connector Configuration 22
3-8. Channel Input Mode Selection 22
3-9. Bridge/Differential/RSE/NRSE Sensor Connection 22
3-10. RS-232 & Ethernet connections 22
3-11. Non-Volatile Memory 22
3-12. Transducer Electronic Data Sheet (TEDS) Interface: 22
4-0. COMPUTER INTERFACE PROGRAMMING GUIDE 23

MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
ii
4-1. Introduction 23
4-2. RS-232 23
4-3. RS-232 Host Set-Up 23
4-4. RS-232 Rear Panel Pinout Listing 23
4-5. Ethernet Communication 23
4-6. Model 482C27 Communication Guidelines 30
4-7. Model 482C27 Unit Initialization Procedure 30
4-8. Command Summary 30
4-9. Command Format 31
4-10. Commands 32
GAIN 32
SENS 32
FSCI 32
FSCO 33
INPT 33
IEXC 34
VEXC 34
FLTR 35
OFLT 35
CLMP 36
CPLG 36
SWOT 36
CALB 37
RTED 37
ALLC 38
RBIA 38
CHRD 38
STUS 39
UNIT 39
UNID 40
AZZR 41
LEDS 41
RSET 41
AUTR 42

MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
iii
SAVS 42
Communication Responses 43
5-0. Wiring Information 44
5-1. Differential Voltage & Full Bridge Mode 44
5-2. Half Bridge Mode 45
5-3. Quarter Bridge Mode 46
5-4. RSE / NRSE Mode for 3 Wire Sensors 46
5-5. Connection of Triaxial Sensors 47
Figure 1 Typical Block Diagram of Model 482C27.............................................3
Figure 2 ICP®Sensor Excitation........................................................................19
Figure 3 Input Fault Window Comparator with LED Indicator .......................20
Figure 4 Input Amplifier Configuration.............................................................20
Figure 5 Autoscale/Overload Window Comparator........................................21
Figure 6 Differential Voltage/Full Bridge Type Sensor Connection...............44
Figure 7 Alternate Connections for Differential Voltage/Full Bridge Type
Sensors........................................................................................................45
Figure 8 Recommended Connections for Half Bridge Type Sensors ...........45
Figure 9 Recommended Connections for Quarter Bridge Type Sensors.....46
Figure 10 Recommended Connections for 3 Wire Type Sensor....................46
Figure A1 Settings for Differential MEMS Sensors…………………………….47
Figure A2 Settings for Single Ended MEMS Sensors....................................48

MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
1
1-0. INTRODUCTION AND SPECIFICATIONS
1-1. Introduction: Safety Considerations
WARNING SYMBOLS AND TERMS
The following symbols and terms may be found on the equipment described in this manual.
This symbol on the unit indicates that the user should refer to the operating instructions located in the manual.
This symbol on the unit indicates that high voltage may be present. Use standard safety precautions to avoid
personal contact with this voltage.
This symbol indicates that the test fixture, Model 482C, must be connected to earth ground via the power cord.
The WARNING heading used in this manual explains dangers that might result in personal injury or death. Always
read the associated information very carefully before performing the indicated procedure.
The Caution heading used in this manual explains hazards that could damage the instrument.
WARNING 1: The power supply/signal conditioner should not be opened by anyone other than qualified service
personnel. This product is intended for service by qualified personnel who recognize shock hazards and are familiar
with the safety precautions required to avoid injury.
WARNING 2: This equipment is designed with user safety in mind; however, the protection provided by the equipment
may be impaired if the equipment is used in a manner not specified by PCB Piezotronics, Inc.
Caution 1: Cables can kill your equipment. High voltage Electro Static Discharge (ESD) can damage electrical
devices. Similar to a capacitor, a cable can hold a charge caused by triboelectric transfer, such as that which occurs in
the following:
Laying on and moving across a rug.
Any movement through air.
The action of rolling out a cable.
Contact to a non-grounded person
The solution for product safety: 1) Connect the cables only with the AC power off. 2) Temporarily “short” the end of
the cable before attaching it to any signal input or output.
Caution 2: ESD considerations should be made prior to performing any internal adjustments on the equipment. Any
piece of electronic equipment is vulnerable to ESD when opened for adjustments. Internal adjustments should therefore
be done ONLY at an ESD-safe work area. Many products have ESD protection, but the level of protection may be
exceeded by extremely high voltage that is typically present in normal situations.

MULTICHANNEL SIGNAL CONDITIONER MODEL 482C27 GENERAL OPERATION MANUAL
2
EQUIPMENT RATINGS
For complete specifications, please refer to the product spec sheet. This equipment operates optimally at +32 to +120°F
(0 to +50°C), in an environment having <85% relative humidity. The line power frequency range is 50/60 Hz.
482C27 requires 10-15 VDC with 500 mA to operate. The unit receives power from a supplied 12 VDC universal AC
power adaptor.
1-2. Model 482C27 System Description
Model 482C27 is a four-channel, bench top signal conditioner that offers low noise operation and simplicity of use.
Each channel is selectable between several input types: Differential Voltage, Non-referenced Single Ended (NRSE),
Referenced Single Ended (RSE), ICP®, Voltage, Bridge (full, half and quarter). NOTE –NRSE and RSE input modes
are for 3-wire sensors that have separate power and signal output connections and a ground connection.
For NRSE, RSE, differential voltage and bridge modes this model offers up to 12 VDC unipolar or bipolar excitation
voltage. These input modes feature incremental gain of x0.1 to x2000, normalization, shunt calibration and AC/DC
coupling. In DC coupled mode, auto balance and auto zero functions automatically compensate the internal circuitry to
provide a zero based output.
The two main input modes for MEMS sensors are:
Differential Voltage –Main use is with MEMS sensors that have a differential output. Sensor examples are PCB model
series 3501, 3503, 3641, 3651, 3741 and 3991.
Referenced Single Ended –Main use is with MEMS sensors that have a single ended output. Sensor examples are PCB
model series 3711 and 3713.
The bridge inputs are compatible with full, ½ and ¼ bridge sensors. Internal switchable bridge completion resistors are
included in the unit (resistance value of 350Ω). The maximum current available is 30mA, with a current limit set at
40mA to prevent damage from inadvertent shorting.
For the ICP® inputs, the model offers up to 20 mA of constant current excitation to power ICP® sensors or in-line
ICP® charge converters. The ICP® and Voltage input feature incremental gain of x.1 to x200, normalization, and
AC/DC coupling. In DC coupled mode, an auto zero function is available to automatically compensate the internal
circuitry to provide a zero based output. In Voltage input mode current excitation is set to 0 mA (off).
Model 482C27 offers the following:
Compatible with PCB’s line of MEMS DC accelerometers (model series 3711, 3713, 3501, 3503, 3741, 3991)
Provides power for ICP® sensors
Compatible with full, ½, and ¼ bridge sensors
Suitable for conditioning any voltage input signals
AC/DC coupling selectable per channel
Auto zero and Auto balance functions
Gain of 0.1 to 2000 for bridge inputs
Gain of 0.1 to 200 for ICP®/voltage inputs
Keypad and menu-driven dot matrix display
Computer control via either RS-232 or Ethernet using the supplied PCB software
1-2.1 Model 482C27 ICP®Input/Output Mode
482C27 contains a regulated 24 VDC power supply that provides constant current for up to 4 individual channels. Both
the output and input connections utilize BNC connectors and are brought out through the rear panel. The 8-pin DIN
connectors are NOT used in ICP® mode.