ACQ-7700 Signal Conditioners - Data Sciences International

DSI
ACQ-7700 Signal
Conditioners
Models: 13-7715-02, 13-7715-04, 13-7715-35, 13-7715-70,
13-7770-BIO12, 13-7770-ECG12, 13-7715-59,
Manual: MU00224-001
Revision 55
Data Sciences
International
119 14th Street NW, Suite 100
St. Paul, MN 55112
Phone: +1 (651) 481-7400
US:
+1 (800) 262-9687
Email: support@datasci.com
www.datasci.com
DSI/Ponemah Life Science products are not “medical devices” intended to be used for the purposes of diagnosis of
disease or other conditions, or in the cure, mitigation, treatment, or prevention of disease, or used as a life support
device. Use of DSI/Ponemah products are solely for the purposes of conducting life science research.
Copyright 1997-2012 Data Sciences International. All rights reserved. No part of this manual may be reproduced,
translated, transcribed, or transmitted in any form or by any means manual, electronic, electromagnetic, chemical, or
optical without the written permission of Data Sciences International.
Data Sciences International
119 14th Street NW, Suite 100
St. Paul, MN 55112
Phone: +1 (651) 481-7400
US:
+1 (800) 262-9687
Email: support@datasci.com
www.datasci.com
Contents
System Overview
5
Introduction ............................................................................................................................... 5
ACQ-7700 Signal Conditioning System .................................................................................... 5
System Configuration ................................................................................................................ 5
Environmental Specifications .................................................................................................... 6
Temperature................................................................................................................. 6
Humidity...................................................................................................................... 6
Altitude ........................................................................................................................ 6
Configuring the System
7
System Description .................................................................................................................... 7
Initial Inspection ........................................................................................................................ 7
Installing ACQ-7700 Signal Conditioners ................................................................................. 7
Removing ACQ-7700 Signal Conditioners ............................................................................... 8
ACQ-7700 Chassis .................................................................................................................... 8
Getting Started
9
Introduction ............................................................................................................................... 9
ACQ-7700 Signal Conditioner User Interface ........................................................................... 9
ABDC-4 / ABDC-32
12
Introduction ............................................................................................................................. 12
Analog Input Connections ....................................................................................................... 12
Configuring the ABDC-4 or ABDC-32 ................................................................................... 14
General Tab ............................................................................................................... 14
Configuration Tab ..................................................................................................... 17
Descriptions Tab........................................................................................................ 20
Voltage View and Resetting .................................................................................................... 21
Voltage View ............................................................................................................. 21
Reset .......................................................................................................................... 22
Accessories .............................................................................................................................. 22
Specifications - ABDC-4 and ABDC-32 ................................................................................. 23
Input Specifications ................................................................................................... 23
A/D Converter ........................................................................................................... 23
Output ........................................................................................................................ 23
Power Specifications ................................................................................................. 23
Universal XE
24
Introduction ............................................................................................................................. 24
Analog Inputs .......................................................................................................................... 24
Input Signal Connections ......................................................................................................... 24
Configuring the Universal XE Signal Conditioner .................................................................. 27
General Tab ............................................................................................................... 27
ACQ 7700 Amplifiers
System Overview  i
Configuration Tab ..................................................................................................... 33
Descriptions Tab........................................................................................................ 37
YSI Calibration ........................................................................................................................ 38
YSI PROBE: PRESET CALIBRATION ................................................................. 38
YSI PROBE: PHYSICAL CALIBRATION ............................................................ 38
Voltage View and Resetting .................................................................................................... 39
Voltage View ............................................................................................................. 39
Reset .......................................................................................................................... 40
Typical Transducer Setup ........................................................................................................ 41
Selection of Mode ..................................................................................................... 41
Defaults ..................................................................................................................... 41
Transducer Calibration .............................................................................................. 42
Accessories .............................................................................................................................. 45
Specifications ........................................................................................................................... 45
Input Circuit (typical of each channel) ...................................................................... 45
Measurement Range .................................................................................................. 46
Transducer Excitation ................................................................................................ 46
Signal Conditioner Output ......................................................................................... 46
Accuracies ................................................................................................................. 46
Transducer Mode ....................................................................................................... 47
Carrier
48
Introduction ............................................................................................................................. 48
Analog Inputs .......................................................................................................................... 48
Input Signal Connections ......................................................................................................... 49
Configuring the Carrier Signal Conditioner............................................................................. 50
General Tab ............................................................................................................... 50
Configuration Tab ..................................................................................................... 53
Descriptions Tab........................................................................................................ 56
Voltage View and Resetting .................................................................................................... 58
Voltage View ............................................................................................................. 58
Reset Channel Settings .............................................................................................. 59
Calibration Procedure .............................................................................................................. 60
Calibration Overview ................................................................................................ 60
Connecting Fittings ................................................................................................... 60
Typical Calibration Procedures ................................................................................. 61
Calibration Verification and Minor Adjustments ...................................................... 63
Pneumotachograph Sizing (Validyne) ....................................................................... 63
Synchronous Operation of Excitation Voltages......................................................... 64
Positioning of Transducers ........................................................................................ 65
Accessories .............................................................................................................................. 66
Specifications ........................................................................................................................... 66
Excitation Voltage ..................................................................................................... 66
A/D Converter ........................................................................................................... 66
Sample Rate ............................................................................................................... 66
Input .......................................................................................................................... 66
Input Impedance ........................................................................................................ 66
Zero Suppression ....................................................................................................... 66
Zero Suppression Error.............................................................................................. 66
Filter Settings ............................................................................................................ 67
Noise.......................................................................................................................... 67
Input Offset Voltage .................................................................................................. 67
Gain Error .................................................................................................................. 67
Linearity .................................................................................................................... 67
ii  System Overview
ACQ 7700 Amplifiers
DCOM & BIO12 Pod
68
Introduction ............................................................................................................................. 68
DCOM Connections ................................................................................................................ 68
BIO12 Signal Connections ...................................................................................................... 68
Configuring the DCOM for BIO12 Pod .................................................................................. 69
General Tab ............................................................................................................... 69
Configuration Tab ..................................................................................................... 71
Descriptions Tab........................................................................................................ 74
Voltage View and Resetting .................................................................................................... 75
Voltage View ............................................................................................................. 75
Reset .......................................................................................................................... 76
Accessories .............................................................................................................................. 77
Specifications ........................................................................................................................... 77
Input Circuit (typical of each channel) ...................................................................... 77
Measurement Range .................................................................................................. 77
Signal Conditioner Output ......................................................................................... 77
12 Bio-potential Pod Accuracies ............................................................................... 77
DCOM & Multi-Lead ECG Pod (ECG12)
79
Introduction ............................................................................................................................. 79
DCOM Connections ................................................................................................................ 79
Multi-Lead ECG Signal Connections ...................................................................................... 79
ECG Lead Connections ............................................................................................. 79
Configuring the DCOM for Multi-Lead ECG Pod (ECG12) ................................................... 81
General Tab ............................................................................................................... 81
Configuration Tab ..................................................................................................... 84
Descriptions Tab........................................................................................................ 87
Features Tab (for Multi-Lead ECG Pod only) ........................................................... 87
Lead-Off Detection .................................................................................................... 88
Zero/Cal Buttons ...................................................................................................................... 89
Voltage View and Resetting .................................................................................................... 91
Voltage View ............................................................................................................. 91
Reset .......................................................................................................................... 91
Accessories/Replacement Parts ............................................................................................... 93
User Maintenance .................................................................................................................... 93
Troubleshooting ....................................................................................................................... 93
Re-Certification of Performance .............................................................................................. 94
Specifications ........................................................................................................................... 94
Signal Input ............................................................................................................... 94
Accuracy Specifications ............................................................................................ 94
Declaration Electromagnetic Emissions/Immunity
96
Electromagnetic Emissions/Immunity Tables ......................................................................... 96
Product Issue Report
103
Product Issue Report Form .................................................................................................... 103
Feature Request
104
Feature Request Form ............................................................................................................ 104
ACQ 7700 Amplifiers
System Overview  iii
Safety
This general safety information is for both user and service personnel. Specific WARNINGS and CAUTIONS
will be found throughout the manual where applicable. Please refer to the Sécurité section for the French
translation of this safety section.
TERMS AND SYMBOLS IN THIS MANUAL AND ON THE EQUIPMENT
ATTENTION, this symbol indicates paragraphs providing cautionary and detailed
information about a specific part of the instrument. That part of the equipment is
also marked with this symbol (See references to this symbol in the manual).
WARNING, risk of electric shock
AC, Alternating current
Type B Applied Part – Common connected to Earth
Type CF Equipment Defibrillation proof
Equipotentiality / Chassis ground
STANDBY (Power is on, instrument off in standby mode)
OFF (connection to AC mains)
ON (connection to AC mains)
DSI/Ponemah Life Science products are not “medical devices” intended to be used for the purposes of diagnosis of
disease or other conditions, or in the cure, mitigation, treatment, or prevention of disease, or used as a life support
device. Use of DSI/Ponemah products are solely for the purposes of conducting life science research.
ACQ 7700 Amplifiers
System Overview  1
WARNING
IF THIS INSTRUMENT IS OPERATED OR USED IN A MANNER NOT SPECIFIED, THE
PROTECTION PROVIDED BY THE SYSTEM MAY BE IMPAIRED. DO NOT USE IN THE
PRESENCE OF FLAMMABLE ANESTHETICS.
2  System Overview
ACQ 7700 Amplifiers
POWER SOURCE
This instrument is intended to operate indoors from a power source that does not apply more than 250 volts
RMS between the supply conductors or between either supply conductor and ground. A protective ground
connection by way of the grounding conductor in the power cord is required. If the unit is mounted in a
permanent installation (i.e. rack-mounted), then the user MUST provide access to the plug OR connect the
instrument to a circuit with a user accessible breaker or power switch. The detachable power cord is the means
by which the mains are disconnected.
PROPERLY GROUND THE INSTRUMENT
This instrument is grounded through the power cord. It is a Class 1 Device. Grounding reliability can only be
achieved when the equipment is connected to a hospital grade receptacle. Use only the power cord and
connector specified for your instrument. Use only a power cord that is in good condition.
Upon loss of the protective-ground connection, all accessible conductive parts (including knobs and controls
that may appear to be insulating) may render an electric shock.
USE PROPER TEST LEADS AND CABLES
Test leads and/or interconnect cables may carry HAZARDOUS live voltages. They must be examined regularly
for wear. Worn leads or cables should be replaced.
The amplifier has been designed and tested for protection against the effects of the discharge of a cardiac
defibrillator. For safe operation, use the only the cables provided with the amplifier.
ECG ELECTRODE PLACEMENT
The user should assure that any electrodes used, including the neutral electrode, do not contact any conductive
parts, including earth.
Whenever a defibrillator is used, assure that the leads are placed on the appropriate places on the subject. Leads
should never be placed on grounded surfaces. Verify that defibrillator leads are NOT placed directly on the
ECG electrodes.
DO NOT USE WITH HF SURGICAL EQUIPMENT
It is imperative that the ECG electrodes be removed from the subject before using any HF surgical equipment.
This equipment DOES NOT provide protective means against burns when used with HF surgical equipment.
SUMMATION OF RISK CURRENT
The amplifier has been designed and tested to meet safe leakage current specifications when attached to the
subject. Any additional equipment added to the subject may increase leakage. The operator should be aware of
the possible summation of additional leakage currents when additional equipment is connected to the subject.
USE WITH PACEMAKERS
The operator should be aware of any possible interactions or safety hazards when the amplifier is used in
conjunction with cardiac pacemakers and other stimulant devices. The manufacturer of these devices should be
consulted for additional information.
ACQ 7700 Amplifiers
System Overview  3
EMI/RFI
The amplifier has been tested to meet EMI/RFI susceptibility and radiation standards. However, the user should
be aware of possible electromagnetic interactions between this device and other devices in the same area and
correct the situation as needed. Any type of conductive sheet connected to an electrical ground and placed
between the source and equipment will help to reduce EMI.
WARNINGS FOR AUTHORIZED SERVICE PERSONNEL
Dangerous voltages exist at several points in this instrument. To avoid personal injury, do not touch exposed
connections or components while power is on. There are no user serviceable components in the signal
conditioners. Return the unit to DSI for calibration and service.
USE THE PROPER FUSE
To avoid fire hazard, use only a fuse of the correct type, voltage rating, and current rating as specified in the
parts list for your instrument.
DO NOT OPERATE WITHOUT COVERS AND PANELS INSTALLED
To avoid personal injury and equipment damage, the user should disconnect power before removing covers,
panels or any grounding straps. Reinstall covers, panels, and any grounding straps before reconnecting power.
WARNING: NO MODIFICATION TO THIS EQUIPMENT IS ALLOWED
4  System Overview
ACQ 7700 Amplifiers
System Overview
Introduction
This manual describes the installation, operation, and specifications for the
DSI/Ponemah ACQ-7700 based signal conditioners that operate with the Ponemah
Physiology Platform.
Each ACQ-7700 signal conditioner has common user interface elements that are
described in a common section of this manual. For specific details of a particular
signal conditioner, refer to that section of the manual.
All ACQ-7700 signal conditioners are user-installable and are compatible with the
ACQ-7700. For more information on where and how these signal conditioners can
be used, contact your local DSI/Ponemah representative.
ACQ-7700 Signal Conditioning System
The DSI/Ponemah ACQ-7700 series of signal conditioners are fully programmable.
Integrated with the Ponemah acquisition and analysis software, they create a
powerful yet easy to use data recording system. The Ponemah software was created
to optimize the real-time monitoring, acquisition, review, and analysis of
physiological signals. It is designed for the Microsoft Windows Operating
System environment, delivering very efficient utilization of computer resources.
Signal conditioner setup is performed using an intuitive graphic user interface. All
parameters can be programmed directly in your test parameter units, greatly reducing
potential data conversion errors. All setup parameters can be saved as a logical test
name for later recall, saving valuable protocol set up time.
System Configuration
The ACQ-7700 signal conditioner occupies a single slot of the ACQ-7700 case. The
input signals from the signal conditioners are conditioned, digitized, and routed, via
the ACQ-7700 “Broadcast” backplane, to the recording system. The Ponemah
software controls the viewing and acquisition of this data.
Within the Ponemah software, an integrated software module handles all control and
communication with the ACQ-7700 signal conditioners. You do not have to load
any additional software or configure any software systems. When the system is
started, the Ponemah software will automatically query the system and identify the
ACQ-7700 signal conditioners and their slot placement.
ACQ 7700 Amplifiers
System Overview  5
For detailed information on the Ponemah software, please refer to the Ponemah
Installation and Reference Manual.
Contact your local DSI/Ponemah sales representative to discuss your signal
conditioner requirements and to obtain a complete listing of available signal
conditioners and their specific capabilities.
Environmental Specifications
The following list of specifications is valid for the DSI products listed in this manual.
Temperature
These temperatures reflect the local ambient of the host unit:
10°C to 40°C Operating
-20°C to 80°C Storage
Humidity
30 to 75% Relative Humidity non-condensing Operating
5 to 95% Relative Humidity non-condensing Storage
Altitude
2000 meters maximum
6  System Overview
ACQ 7700 Amplifiers
Configuring the System
System Description
The ACQ-7700 signal conditioners use a single slot of the ACQ-7700. It includes
three sections: the analog conditioning front end, an analog to digital conversion
section and a bus communication and data interface section. There are no controls or
internal jumpers or settings on any of the ACQ-7700 signal conditioners; all control
is performed by software. Depending on the chassis the ACQ-7700 accepts various
number of ACQ-7700 signal conditioners. Signal conditioners are inserted into
guided slots and secured by the positive threaded latching screws on the signal
conditioner.
Power, data, and communication connections are via a board-mounted connector on
the rear of the ACQ-7700. The only user connections are the individual input
signals.
Initial Inspection
Prior to attempting any electrical connections or operation, visually examine the unit
for any damage.
Installing ACQ-7700 Signal Conditioners
Turn OFF the power to the ACQ-7700. Remove the line cord. Remove all input
measuring circuit terminals from ALL signal conditioners.
Slide the signal conditioner into the next available open slot. Slots must be filled
contiguously starting with slot A.. Slot A must be occupied. The metal side plate
fits into plastic guides that align the signal conditioner with the backplane mating
connectors. Turn the latching screw knobs clockwise to secure the signal conditioner
in its slot. Tightening the latching screws secures the mating connectors located on
the rear of the signal conditioner into the backplane connector of the ACQ-7700. Be
careful not to over tighten these screws. Assure all blank slots are filled with blank
panels for proper airflow.
When connecting the signal conditioner's input cables, care should be taken to avoid
contact with hazardous external voltages. Always install the connection to the
signal conditioner input connector BEFORE applying the source voltage to the
cable.
Reconnect the power cord and restore power to the system.
ACQ 7700 Amplifiers
Configuring the System  7
Removing ACQ-7700 Signal Conditioners
Turn OFF the power to the ACQ-7700. (The signal conditioners may be damaged
if inserted or removed under power). The power switch is located either on the front
or rear of the ACQ-7700.
Remove all source voltages/signals being monitored.
Disconnect the signal conditioner's input cables.
With an appropriate screwdriver, use a Phillips screwdriver and turn the screws in a
counter-clockwise direction until the outer ring of the latch mechanism is free
turning. Now turn the latch mechanism counter-clockwise and pull the signal
conditioner from the slot.
Slide the signal conditioner out of the ACQ-7700.
Insert a blank panel into the exposed slot. These panels perform more than simply
an aesthetic function. They are required for proper system cooling and RFI/EMI
shielding.
ACQ-7700 Chassis
An ACQ-7700 is used in a number of DSI/Ponemah recording instruments. This
assembly is designed to house ACQ-7700 signal conditioners and supply all power,
communications, and data transfer to and from the host instrument.
8  Configuring the System
ACQ 7700 Amplifiers
Getting Started
Introduction
Please reference the ACQ-7700 Installation Manual (MU00225) for a detailed
description of the ACQ-7700 installation.
Before turning on the acquisition Interface power, be sure the line voltage is within
the power supply specifications.
The power switch for the ACQ-7700 is located on the front of the unit. A green light
located on the ACQ-7700 front panel illuminates when power is ON.
Connect the ACQ-7700 to the USB port selected during installation using a standard
USB cable. If you have not already installed the Ponemah software on your system,
please refer to the Ponemah Physiology Platform reference manual for installation
instructions.
Once the inputs are connected, power up the acquisition interface, and start the
Ponemah application. You are now ready to begin recording data.
The screen captures in this manual are taken from the current Ponemah software.
Older versions of Ponemah are similar.
ACQ-7700 Signal Conditioner User Interface
The signal conditioner main menu may be accessed by selecting the menu item
Hardware, 7700 Amplifier Setup from the Ponemah application as displayed here:
7700 Amplifier Setup
The signal conditioner main menu displays an overview of the signal conditioners
installed within your recording system. If more than one type of signal conditioner is
installed, each type will display an associated setup configuration menu, which is
ACQ 7700 Amplifiers
Getting Started  9
accessed by selecting the appropriate tab in the main menu. In the example in Figure
Signal Conditioner Configuration Dialog, three types of signal conditioner are
installed: ABDC-32, UniversalXE, and Carrier. You can select any signal
conditioner for setup by clicking on the tab associated with that signal conditioner.
Signal Conditioner Configuration Dialog
The General tab displays the setup status of the signal conditioner. The slots in the
ACQ-7700 are labeled A through M (dependent upon the type of ACQ 7700 being
used), from left to right. The first slot is A. Since the ABDC-32 signal conditioner
has 32 input channels, there will be 32 set up rows displayed. In this example, A1
through A8 are displayed since the signal conditioner is inserted in the first slot. For
each input, all parameters are displayed in the Units selected for that input. Using
the vertical scroll bar at the right allows access to inputs A9 to A32.
The Configuration tab displays other options that can be configured. These are
signal conditioner specific.
The Descriptions tab allows you to enter text to further describe the parameters being
recorded. It is not directly used as part of the signal conditioner configuration but is
available for review whenever desired.
The Features tab displays other options that can be configures. These are specific to
the Multi-Lead ECG POD (ECG12).
Channel specific parameters may be entered in two ways. Text entry can be
performed by selecting a particular cell, clicking your mouse pointer on it, and
entering the new value, or double clicking on a particular cell, then a graphic element
will appear which prompts you for your input. These are displayed, along with a
description of the function, which is below it.
If you click on the icon of a setup function, such as Label or Span, all channels in
that setup column will be selected. A graphic element or dialog box will appear and
all channels may be changed, globally, with one entry.
For functions that use a graphical toggle switch, the function is enabled by double
clicking your mouse pointer in the desired cell. Once selected, a graphical
representation of a toggle switch will briefly appear, the switch position will change,
and the selection panel will close. To disable the function, simply follow the same
10  Getting Started
ACQ 7700 Amplifiers
procedure, double clicking your mouse pointer in the desired cell. The switch
position will change and the panel will close.
If the mouse cursor is placed over one of the span readings, a tool tip will appear
equating the inputted voltage to the outputted user units (Span).
Span Tool tip
ACQ 7700 Amplifiers
Getting Started  11
ABDC-4 / ABDC-32
Introduction
This section describes the operation and specifications for the Advanced Basic DC
(ABDC-4) with either 4 channel capability, model number 13-7715-04 or (ABDC32) 32 channel capability, model number 13-7715-02.
The ACQ-7700 ABDC-4 signal conditioner has 4 single ended inputs and the
ABDC-32 has 32 single ended inputs. Any input can configured in unipolar or
bipolar polarity.
Analog Input Connections
The ABDC-4 signal conditioner uses four standard grounded BNC connectors while
the ABDC-32 signal conditioner has a 37-pin “D” shell type male input connector.
The inputs are single ended. The input common is therefore referenced to the
chassis.
MAXIMUM VOLTAGE ABOVE EARTH POTENTIAL TO ANY INPUT
CONNECTION IS ±50VDC OR PEAK AC.
12  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers
The inputs for the ABDC-32 37-pin “D” connector are defined in the table below.
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DESCRIPTION
Input Ch 9
Input Ch 10
Input Ch 11
Input Ch 12
Input Ch 13
Input Ch 14
Input Ch 15
Input Ch 16
Input Ch 25
Input Ch 26
Input Ch 27
Input Ch 28
Input Ch 29
Input Ch 30
Input Ch 31
Input Ch 32
Ground
Ground
Ground
PIN
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
DESCRIPTION
Input Ch 1
Input Ch 2
Input Ch 3
Input Ch 4
Input Ch 5
Input Ch 6
Input Ch 7
Input Ch 8
Input Ch 17
Input Ch 18
Input Ch 19
Input Ch 20
Input Ch 21
Input Ch 22
Input Ch 23
Input Ch 24
Ground
Ground
ABDC-32 Input Connections
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  13
Configuring the ABDC-4 or ABDC-32
The only difference in the following menus is that the ABDC-4 will only display 4
input channels while the ABDC-32 will display 32 input channels in the dialogs.
In the figures below, the ABDC-4 signal conditioner has been selected. When a
signal conditioner is selected, its tab is brought to the foreground and a group of set
up menus specific to that signal conditioner will be displayed. This will include
General, Configuration, and Descriptions tabs.
General Tab
The General Tab allows the user to set up channel specific signal conditioner
parameters. They include the channel Label, State, Polarity, and Span.
ABDC-4 General Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
This column is useful in troubleshooting the signal conditioner input connection.
14  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers
Label
Label allows you to type in a logical name of up to 10 additional characters for a
particular input channel. The chosen name will be saved and used to identify the
input data throughout the system, such as in the dialog that displays input channel
information.
State
The State function will turn the sampling on or off for that channel, but the last value
will continue to be displayed. It is recommended that this selection should always be
left in the ON condition. To turn any channel on or off, set the analysis to DIS in the
P3 Setup dialog. The default setting is On.
Polarity
The Polarity function allows you to select the polarity of the signal to be displayed
either in Bi-Polar or Uni-Polar mode. This is accomplished by a simple toggle
switch function. The ABDC signal conditioner is designed such that the inputs may
be either Bi-Polar (zero centered) or Uni-Polar (zero at the edge). Double clicking
on any one channel will change the polarity. All channels can be changed at once by
clicking on the Polarity icon. In Bi-Polar mode the Span settings automatically scale
to a plus and minus value. In Uni-Polar mode the Span settings automatically scale
from 0 to a plus value. The default setting is Bi-Polar.
Span - Bi-Polar Mode
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  15
There is one span control that sets the maximum input of the signal conditioner. The
Bi-Polar High/Low Span is symmetrical. Ranges available are ±1.25V, ±2.5V, ±5V,
±10V, and ±20V. The Span defines the sensitivity or scale for each channel. This
function sets the maximum and minimum values in user units that will be recorded.
The default setting is ±5.
NOTE: Span should be set AFTER High/Low Cal and High/Low Unit values are
set in the Configuration Menu.
The Span may be chosen to be any of the five selections within the valid range for
that input. When Span is selected, a dialog box appears. Simply select the range
desired. The actual value you enter may be considerably different since it will
usually be in the units corresponding to your application. This will be defined by the
calibration and unit set up in the Configuration tab. Refer to High/Low Cal and
High/Low Unit setup for a sample setup.
Span - Uni-Polar Mode
There is one span control that sets the maximum input of the signal conditioner. The
Uni-Polar High/Low Span is scaled 0V to +1.25V, 2.5V, 5V, 10V, and 20V. The
Span defines the sensitivity or scale for each channel. This function sets the
maximum and minimum values in user units that will be recorded. The default
setting is 0 to 5.
NOTE: Span should be set AFTER High/Low Cal and High/Low Unit values are
set in the Configuration Menu.
The Span may be chosen to be any of the five selections within the valid range for
that input. When Span is selected, a dialog box appears. Simply select the range
desired. The actual value you enter may be considerably different since it will
usually be in the units corresponding to your application. This will be defined by the
calibration and unit set up in the Configuration tab. Refer to High/Low Cal and
High/Low Unit setup for a sample setup.
Units
This column displays the units that have been set in the Configuration tab and
cannot be changed in this tab. The Units have no effect on the channel and it is for
documenting the Input units.
16  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers
Configuration Tab
To set up the actual signal input configuration, select the Configuration tab in the
signal conditioner setup panel. The Configuration set up screen as shown below,
ABDC-4 Configuration Tab, will be displayed.
ABDC-4 Configuration Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
This column is useful in troubleshooting the signal conditioner input connection.
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  17
Low Cal & High Cal
If you have available an input calibration signal (voltage), it can be used to calibrate
the inputs. Double clicking on either the Low Cal or High Cal cell associated with
the channel will open a dialog box as shown. This function allows a specific value to
be entered that will be assigned to either the Low or High Cal. See Measure section
for more information on this function and the use of the feature.
Additional setup information is needed to correctly scale the particular signal input.
Since the input can be from a vast number of different sources, the specific input
Units, High Unit, and Low Unit of measure should be set up. This calibrates the
channel to the actual user units and scaling. The system will now display, record,
and perform analysis directly in your units of measure. System defaults are: -5 Low
Cal = -5 Low Unit and +5 High Cal = +5 High Unit. Low and High Cal entries are
actual voltage values. The same defaults are present in the High Cal function. Also
see Low and High Units and Measure section.
The calibration values entered are in the base units of the signal conditioner (Volts).
Measure
In instances where there is offset on the input signal, the Measure function can
compensate for this offset. The software can Measure a Low or High Cal value, and
set that value to equal the entry in the Low or High Units cells.
If you have available an input calibration signal (voltage), it can be used to calibrate
the inputs. Double clicking on either the Low Cal or High Cal cell associated with
the channel will open a Measure dialog box as shown here. This function allows you
to manually enter a specific value that will be assigned to either the Low or High
Cal, or, by clicking the Measure button accept an external voltage that will set the
calibration of the signal conditioner channel to correspond to the external calibration
signal. Measure will enter any value that is being read at that time.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.
18  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers

Current – Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
NOTE: The Average selection with a Time of one second is the default setting for
the Universal, Bridge, Transducer, ABDC and Carrier signal conditioners. The
previous method utilized to determine Low and High Cal values was to take the
value at the time that the Measure button was selected.
Low Units & High Units
The user can select the units he wishes to display. Combined with Low Cal and
High Cal, the user can set “x” value in Cal to equal “y” number of units. Example:
If 2.500mV is entered in the High Cal and 100 was entered in High Units, then 2.500
mV = 100 units. Also see Measure Function.
Units
Units allow you to enter the actual engineering units being measured. The default is
Volts (V), but this may be changed to any engineering units. The User Unit input
field is limited to 9 characters.
Example: Suppose channel 4 is connected to a flow meter that outputs a voltage
proportional to the blood flow. To record this, input A4 will be configured in
Voltage Mode. Double clicking on the A4 Units cell will display a text box,
allowing you to enter "ml/S".
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  19
Descriptions Tab
The Descriptions tab allows the user to enter a text description for each input.
The Descriptions Menu allows you to enter text to further describe the parameters
being recorded. This may include additional user information or test setup
information. This information is stored in a text file. It is not directly used as part of
the signal conditioner configuration but is available for review whenever desired.
Double click on the Text area, type in the information, then click on the OK button.
Below is a typical Description tab.
ABDC-4 Descriptions Tab
20  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers
Voltage View and Resetting
The ABDC-4 signal conditioner has the capability of viewing its values for
debugging purposes and also resetting each channel if a problem has occurred during
setup.
Voltage View
This view allows the user to see the raw voltage that is being inputted into the
channels. Right click on one of the channels (anywhere except for the Input
Identifier or Value columns) and select Voltage View. Below is an example of the
right click menu that will appear.
Voltage View Menu
Once voltage view has been selected the values listed for Value, Low Span, and
High Span are listed in volts. Those columns values will change from black
numbering to green numbering to notify the user that they are running in voltage
view. Also, the Units column entry will change from black lettering to gray
lettering. When voltage view has been set, the units of the values shown are in V.
Shown below is an example of the 7700 Modules dialog with voltage view set.
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  21
Voltage View
To return back to normal view, select Voltage View again.
Reset
This selection allows the user to reset the settings of the channel selected. When
selected, the channel will reset all columns dependent on which mode is currently
selected. View the Mode section for default settings. When this selection is
selected, a message box will appear asking if the channel should be reset. This
allows the user to select No to cancel the resetting of the channel and Yes to reset the
channel.
Accessories
This section lists the available accessories that are available for the ABDC-32 signal
conditioners:
BNC Input Module - J03380 (ABDC-32 only) (Includes cable for connection)
Cable set BNC-BNC – J02936
22  ABDC-4 / ABDC-32
ACQ 7700 Amplifiers
Specifications - ABDC-4 and ABDC-32
Input Specifications
Circuit: Single ended
Impedance: 100kΩ to each input
Maximum input voltage: ±50V without damage for 30 sec
Common Mode Rejection: -80 dB min
Input Range Bipolar: ±1.25V, ±2.5V, ±5V, ±10V, and ±20V
Input Range Unipolar: 0 to 1.25V, 0 to 2.5V, 0 to 5V, 0 to 10V and 0 to 20V
A/D Converter
Resolution: 16 bits
Conversion rate: 250k samples/sec aggregate
Output
Accuracy: ±0.5% of full scale typ., ±0.7% max
Bandwidth: Flat to ±2% at 10kHz
Noise: Less than 0.3% F.S. typ., 0.5% max
Offset: ±0.3% F.S typ., ±0.5% max with input shorted
Power Specifications
+5V @ <600mA
+12V @ <200mA
-12V @ <200mA
ACQ 7700 Amplifiers
ABDC-4 / ABDC-32  23
Universal XE
Introduction
This section describes the installation, operation and specifications for the
DSI/Ponemah Universal XE signal conditioner, Model Number 13-7715-59. The
Universal XE signal conditioner is a user installable signal conditioner compatible
with the ACQ-7700 and compatible with Ponemah Physiology Platform software
versions 4.40 and later (with the appropriate hardware DLL files) For more
information on where and how this signal conditioner can be used, contact your local
DSI/Ponemah representative.
The ACQ-7700 Universal XE signal conditioner is a four-channel signal conditioner.
The four independent input connectors each have their own associated excitation
source for use with transducers or strain gages. The signal conditioner occupies a
single slot of the ACQ-7700. The four input signals are conditioned, digitized, and
routed, via the ACQ-7700 “Broadcast” backplane, to the recording system. The
system software controls the viewing and acquisition of this data.
The maximum acquisition sampling rate for the Universal XE signal conditioner is
100K samples per second/channel.
Analog Inputs
Each of the signal conditioners front panel connectors is labeled with its channel
number. See the Input Signal Connections section.
MAXIMUM VOLTAGE ABOVE EARTH POTENTIAL TO EITHER INPUT
TERMINAL IS 20VDC OR PEAK AC. EXCEEDING THIS VALUE CAN
CAUSE DAMAGE. NORMAL CONTINUOUS INPUT VOLTAGE
MAXIMUMS WITHOUT DAMAGE ARE ±5.0VDC OR 5V PEAK.
Type B Applied Part – Common connected to Earth
Input Signal Connections
The Universal XE signal input connection is made with a 14-pin ODU connector,
one per channel. The Universal XE Connector Table describes the pin designations
for this connector. The maximum input voltage is ±5.0VDC or 5V peak. It is
recommended that a shielded cable be used for low-level measurements.
24  Universal XE
ACQ 7700 Amplifiers
Pin
Function
Pin
Function
1
+12V Module Power
8
Channel Negative Input
2
12V Common
9
Channel Positive Input
3
-12V Module Power
10
Channel Common
4
+5V Common
11
Chassis Ground
5
+5V Module Power
12
Channel Probe AC/DC Select
6
Channel Excitation Out Negative
13
Channel Excitation Out Position
7
External Reset
14
Channel Excitation Return
DESCRIPTION OF FUNCTIONS:
Pin
ACQ 7700 Amplifiers
Description
1
Provides +12 power to an external preamp
2
Provides 12 volt common to an external preamp
3
Provides -12 power to an external preamp
4
Provides 5 volt common to an external preamp
5
Provides +5 power to an external preamp
6
Negative excitation voltage
7
External Reset
8
Negative input signal
9
Positive input signal
10
Common for input signal
11
Connect to Earth ground
12
Allows selection of AC or DC coupling in the preamp
13
Positive excitation voltage
14
Excitation return signal
Universal XE  25
26  Universal XE
ACQ 7700 Amplifiers
Configuring the Universal XE Signal Conditioner
Note: Screen captures in this section show an ACQ-7700 with multiple signal
conditioners. The Universal XE signal conditioner has been selected.
In the figure below, Universal XE General Tab, the Universal XE signal conditioner
has been selected. When a signal conditioner type is selected, its tab is brought to
the foreground and a group of set up menus specific to that signal conditioner will be
displayed. This will include General, Configuration, and Descriptions tabs, which
are accessed by their own tabs.
General Tab
The General tab, as seen in the Universal XE signal conditioner, allows the user to
set up channel specific signal conditioner parameters. This includes the Label,
Mode, High and Low Pass Filters, and Low Span and High Span.
Universal XE General Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
ACQ 7700 Amplifiers
Universal XE  27
This column is useful in troubleshooting the signal conditioner input connection.
Label
Label allows you to type in a logical name of up to 10 additional characters for a
particular input channel. The chosen name will be saved and used to identify the
input data throughout the system, such as in the dialog that displays input channel
information.
28  Universal XE
ACQ 7700 Amplifiers
Mode
This selection allows you to choose the mode of operation for a particular channel.
As with all signal conditioner functions, double clicking the mouse pointer in the
mode cell of a particular channel allows you to set that channel. Double clicking on
the Mode symbol allows you to set all channels, globally, to the same mode of
operation. In both instances, a graphic selection panel will appear with the operating
modes described below.
The default settings when V is the selected mode are Low Span = -1, High Span =
1, Low Cal = -1.000, High Cal = 1.000, Low Unit = -1, High Unit = 1, and Units =
V.
The default settings when mV is the selected mode are Low Span = -500, High
Span = 500, Low Cal = -1.000, High Cal = 1.000, Low Unit = -1, High Unit = 1,
and Units = mV.
The default settings when µV is the selected mode are Low Span = -500, High Span
= 500, Low Cal = -1.000, High Cal = 1.000, Low Unit = -1, High Unit = 1, and
Units = µV.
The default settings when Transducer is set are Low Pass = 100 Hz, Low Span = 50, High Span = 350, Excitation = 5V, Low Cal = 0, High Cal = 2.500, Low Unit
= 0, High Unit = 100, and Units = mmHg.
The default settings when Iso/DeFib is set are Low Span = -500, High Span = 500,
Low Cal = -1.000 High Cal = 1.000 Low Unit = -1 High Unit = 1 and Units = mV.
The default settings when YSI C is set are Low Pass =10 Hz, Low Span =30(°C),
High Span =50(°C), Excitation =2.5V, Low Cal = 971.468(mV), High Cal
=1114.948(mV), Low Unit = 35(°C), High Unit = 45(°C), and Units = deg C.
The default settings when YSI F is set are Low Pass =10 Hz, Low Span =90(°F),
High Span =120(°F), Excitation =2.5V, Low Cal = 971.468(mV), High Cal
=1114.948(mV), Low Unit = 95(°F), High Unit = 113(°F), and Units = deg F.
The default settings when YSI is set are Low Pass =10Hz, Low Span =900(mV),
High Span =1200(mV), Excitation =2.5V, Low Cal = -1.000(mV), High Cal =
1.000(mV), Low Unit = -1, High Unit = 1, and Units = mV.
Iso/Defib Probe
See the 7700 Isolated Defibrillation Protected Probe section if using the Iso/DeFib
Probe.
ACQ 7700 Amplifiers
Universal XE  29
YSI Probes
The YSI selections allow the user to connect a YSI probe. See the YSI Calibration
section for the calibration of the YSI probes:
Transducer
This mode is used when connecting to a strain gage based transducer, such as a
blood pressure transducer. The transducer must have a complete 4-arm circuit. In
Transducer mode, the signal conditioner supplies excitation to the transducer strain
gage circuit and measures the resultant output voltage. When Transducer is selected,
the signal conditioner will use the direct input from the transducer to calibrate the
input channel in user units (see Unit/Cal setup in the Configuration tab section).
Units default to mmHg in Transducer Mode.
Voltage
This mode sets the channel to operate as a general purpose DC input signal
conditioner with selections of microvolts, millivolts, or volts. In Voltage Mode,
additional information is needed to correctly set up the particular signal input. Since
the input can be from a vast number of different sources, the specific input Units,
High Unit and Low Unit of measure may be changed manually. This calibrates the
channel to the actual user units and scaling. The system will now display, record,
and perform analysis directly in your units of measure. Unit defaults match the
mode selection, i.e. mV defaults to mV in the Units cell.
High Pass
This function allows you to add a high pass filter to your input signal.
Typically a High Pass filter is needed when using a high sensitivity on the signal
conditioner with the input measuring a bio-potential.
High Pass Selection is not available in Transducer Mode or any of the YSI modes.
30  Universal XE
ACQ 7700 Amplifiers
Low Pass
This function allows you to add a low pass filter to your input signal.
Since the Universal XE signal conditioner has a large input bandwidth, certain
signals require that the signal be bandwidth limited. This performs as an antialiasing filter for the signal conditioner. Selecting OFF sets the Low Pass Filter to
maximum bandpass of the signal conditioner, approximately 5kHz at -3dB.
Low Span
The span defines the sensitivity or scale for each channel. The Low Span sets the
minimum value, in user units that will be recorded. When setting up channel
parameters, SPAN should be set last. Assure the setting is appropriate for the
anticipated readings. If offset is anticipated, the low span should be a number that
will allow the trace to remain on the display.
The span is dependent upon the mode of operation selected. The Low Span may be
chosen to be any value within the valid range for that input. The valid range is
shown above the data entry box. When Low Span is selected, a dialog box appears.
Simply type in the value desired. If the value entered is outside of the acceptable
range for this input, an INVALID message will flash in the Low Span window. The
actual value you enter may be considerably different since it will usually be in the
units corresponding to your application.
Under certain conditions, the Spans will display the minimum or maximum allowed
value in scientific notation.
ACQ 7700 Amplifiers
Universal XE  31
High Span
The span defines the sensitivity or scale for each channel. The High Span sets the
maximum value, in user units that will be recorded. When setting up channel
parameters, SPAN should be set last. Assure the setting is appropriate for the
anticipated readings. Assure to set the high span for a number that will allow the
trace to remain on the display.
The span is dependent upon the mode of operation selected. The High Span may be
chosen to be any value within the valid range for that input. The valid range is
shown above the data entry box. When High Span is selected, a dialog box appears.
Simply type in the value desired. If the value entered is outside of the acceptable
range for this input, an INVALID message will flash in the High Span window. The
actual value you enter may be considerably different since it will usually be in the
units corresponding to your application.
Units
This column displays the units that have been set in the Configuration tab and
cannot be changed in this tab. The Units have no effect on the channel and it is for
documenting the Input units.
32  Universal XE
ACQ 7700 Amplifiers
Configuration Tab
To set up the actual signal input configuration, select the Configuration tab in the
signal conditioner setup panel. The Configuration set up screen, as shown in
Universal XE Configuration Tab, will be displayed.
Universal XE Configuration Tab
Excitation
This function displays a text box that allows you to set the excitation voltage that
will be applied to the transducer or strain gage. Although this is commonly set to
5VDC, it may be beneficial to change this setting. The output of a transducer is
directly proportional to the input excitation. Therefore, by doubling the excitation
voltage, you can double the output of the transducer.
NOTE: You should be careful not to exceed the rated operational range of your
transducer. Also, adding excitation will increase the current and the heat that must
be dissipated by the transducer. In some cases, this additional heat may cause the
transducer signal to drift unacceptably.
ACQ 7700 Amplifiers
Universal XE  33
Caution: Excitation current is limited to 20mA. Exceeding this limit will lead
to measurement errors!
Excitation maximum = (20 * 10-3) *(Rbridge)
Low Cal & High Cal
If you have an available input calibration signal (voltage), it can be used to calibrate
the inputs. Double clicking on either the Low Cal or High Cal cell associated with
the channel will open a dialog box as shown. This function allows a specific value to
be entered that will be assigned to either the Low or High Cal. See Measure section
for more information on this function and the use of the feature.
Additional setup information is needed to correctly scale the particular Low and
High signal inputs. Since the input can be from a vast number of different sources,
the specific input Units, High Unit and Low Unit of measure should be set up. This
calibrates the channel to the actual user units and scaling. The system will now
display, record, and perform analysis directly in the units of measure. System
defaults are: -1.00 Low Cal = -1 Low Unit when in Voltage Mode. Low and High
Cal entries are actual voltage values. The same defaults are present in the High Cal
function. Also see Low and High Units and Measure section.
The calibration values entered are in the base units of the signal conditioner (Volts
for a mode setting of V, millivolts for modes settings of mV, Transducer, and
microvolts for a mode setting of µV).
Measure
In instances where there is offset on the input signal, the Measure function can
compensate for this offset. The software can Measure a Low or High Cal value, and
set that value to equal the entry in the Low or High Units cells.
If you have available an input calibration signal (voltage), it can be used to calibrate
the inputs. Double clicking on either the Low Cal or High Cal cell associated with
the channel will open a Measure dialog box as shown here. This function allows you
to manually enter a specific value that will be assigned to either the Low or High
34  Universal XE
ACQ 7700 Amplifiers
Cal, or, by clicking the Measure button accept an external voltage that will set the
calibration of the channel to correspond to the external calibration signal. Measure
will enter any value that is being read at that time.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.

Current - Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
NOTE: The Average selection with a Time of one second is the default setting for
the Universal, Universal XE, Bridge, Transducer, ABDC and Carrier signal
conditioners. The previous method utilized to determine Low and High Cal values
was to take the value at the time that the Measure button was selected.
Low Units & High Units
The user can select the units to be displayed. Combined with Low Cal and High Cal,
the user can set “x” value in Cal to equal “y” number of units. Example: If
2.500mV is entered in the High Cal and 100 was entered in High Units, then
2.500mV = 100 units. Also see Measure Function.
Units
ACQ 7700 Amplifiers
Universal XE  35
Units allow you to enter the actual engineering units being measured. The default is
dependent on the Mode selected but this may be changed to any engineering units.
The User Unit input field is limited to 9 characters.
36  Universal XE
ACQ 7700 Amplifiers
Descriptions Tab
The Descriptions tab allows the user to enter a text description for each input and to
further describe the parameters being recorded. This may include additional user
information or test setup information. This information is stored with the test set up
in a text file. It is not directly used as part of the signal conditioner configuration but
is available for review whenever desired. Double Click on the text area, type in the
information, and then click on the OK button. Below is a typical Description tab.
Universal XE Descriptions Tab
ACQ 7700 Amplifiers
Universal XE  37
YSI Calibration
The following procedures are used to measure temperatures using a 700A series YSI
probe with a Universal XE Signal conditioner.
YSI PROBE: PRESET CALIBRATION
A standard YSI probe connected to the 7700 Universal XE signal conditioner using
two required adapter cables (J03445-1 & J03586) can be used without calibration.
Select YSI-C from the Mode Box in the Universal XE Signal conditioner General
Tab. The probe will display results in degrees Celsius within approximately ±1°C.
Select YSI-F from the Mode Box in the Universal XE Signal conditioner General
Tab. The probe will display results in degrees Fahrenheit within approximately
±2°F.
YSI PROBE: PHYSICAL CALIBRATION
The probe can be calibrated to two known temperature sources.
Select YSI from the Mode Box, in the Universal XE Signal conditioner General Tab.
When selecting the YSI probe, default values are populated. This places the probe in
a voltage-measuring mode and will display an associated voltage for temperatures
between 30°C (86°F) and 50°C (122°F).
Lower the temperature of the probe. Once the temperature has stabilized, record the
probe voltage measured (Vmin) and also the temperature of the probe (Tmin).
Raise the temperature of the probe. Once the temperature has stabilized, record the
probe voltage measured (Vmax) and also the temperature of the probe (Tmax).
Set the following boxes:
Low Cal: = Vmin value
High Cal: = Vmax value
Low Unit: = Tmin value
High Unit: = Tmax value
Set the "Units" field to the same unit of measurement that the temperature
measurements were taken above (degC or DegF).
Set the "Low Span" and "High Span" settings to measure the range of temperatures
of interest.
Note that the YSI probe is intended for use over a small temperature range, and
calibrating the probe over a small temperature range allows the highest measurement
accuracy (to within ±0.05°C, ±0.1°F in the 30 to 50°C range). The YSI probe output
is not completely linear, and calibrating to two extremes (freezing and boiling) may
generate results similar to using the device in the un-calibrated mode ±1°C, ±2°F.
Calibrating the device between two close temperatures of interest should provide an
accurate measurement limited to the theoretic non-linearity of the probe and the
accuracy of the calibration fixture.
38  Universal XE
ACQ 7700 Amplifiers
Voltage View and Resetting
The Universal XE signal conditioner has the capability of viewing its values for
debugging purposes and also resetting each channel if a problem has occurred during
setup.
Voltage View
This view allows the user to see the raw voltage that is being inputted into the
channels. Right click on one of the channels (anywhere except for the Input
Identifier or Value columns) and select Voltage View. Below is an example of the
right click menu that will appear.
Voltage View Menu
Once voltage view has been selected the values listed for Value, Low Span, and
High Span are listed in volts. Those columns values will change from black
numbering to green numbering to notify the user that they are running in voltage
view. Also, the Units column entry will change from black lettering to gray
lettering. When voltage view has been set, the units of the values shown are
dependent on the mode selected. If in V mode the units are Volts, if in mV mode the
units are mV, if in µV mode the units are µV, and if in Transducer mode the units are
in mV. Shown below is an example of the 7700 Modules dialog with voltage view
set.
ACQ 7700 Amplifiers
Universal XE  39
Voltage View
To return back to normal view, select Voltage View again.
Reset
This selection allows the user to reset the settings of the channel selected. When
selected, the channel will reset all columns dependent on which mode is currently
selected. View the Mode section for default settings. When this selection is
selected, a message box will appear asking if the channel should be reset. This
allows the user to select No to cancel the resetting of the channel and Yes to reset the
channel.
40  Universal XE
ACQ 7700 Amplifiers
Typical Transducer Setup
Selection of Mode
In this example, the first channel on the Universal XE signal conditioner will be set
to Transducer Mode. First, select the General tab. Highlight and change channel
one to Transducer in the Mode column as shown above. Channel one will now be in
the default Transducer Mode. Shown below are the General and Configuration tabs
in the transducer default mode with only channel one being selected. In the
Configuration tab, the default is 5V excitation, and Low Cal and Low Unit and High
Cal and High Unit default as follows: 0mVDC = 0mmHg and 2.500mVDC =
100mmHg. Many transducers are typically 50µV/V/cmHg (or 5µV/V/mmHg).
Thus the calibration factor and output is as follows: 50µV per V (5V Excitation) =
250µV x 10(cm) = 2.5mV.
Defaults
The following dialogs display the defaults in Transducer mode.
ACQ 7700 Amplifiers
Universal XE  41
General tab Transducer defaults
Configuration tab Transducer defaults
Transducer Calibration
Most transducers are not EXACTLY 50µV/V/cmHg (or 5µV/V/mmHg) so the signal
conditioner must be calibrated for a particular transducer.
First a zero baseline must be established, and this is typically with no pressure being
applied to the transducer. Dependent on the position of the transducer at rest, there is
usually some offset due to gravity or any other forces acting on the transducer
causing a small amount of zero shift or offset.
42  Universal XE
ACQ 7700 Amplifiers
Double click on the Low Cal cell for channel one. This opens a dialog box that
enables the user to either enter the offset value in mV (if known), or “Measure” the
value. By clicking on the Measure button, the software will accept an external
voltage that will set the zero calibration of the channel to correspond to the value
read. With the transducer at rest and open to air, click on the Measure button. The
offset value will be read and automatically inserted in the Low Cal cell. The
example below indicates that there is 0.059mV offset with the transducer at rest.
Next, a gain value must be entered in High Cal. If you have an input calibration
source available, it can be used to input a value to set the gain. Double click on the
High Cal cell for channel one. This opens a dialog box that enables the user to either
enter the gain value in mV (if known), or “Measure” the value. By clicking on the
Measure button, the software will accept an external voltage that will set the gain
calibration of the channel to correspond to the value read. Apply 100mmHg pressure
to the transducer and, click on the Measure button. The gain value will be read and
automatically inserted in the High Cal menu. The example below indicates that the
gain calibration value is 2.483mV. This indicates that this transducer is not exactly
50µV/V/cmHg (or 5µV/V/mmHg). If so, that value would be read as 2.500mV.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.
ACQ 7700 Amplifiers

Current - Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.
Universal XE  43

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
NOTE: The Average selection with a Time of one second is the default setting for
the Universal, Universal XE, Bridge, Transducer, ABDC and Carrier signal
conditioners. The previous method utilized to determine Low and High Cal values
was to take the value at the time that the Measure button was selected.
If you have the calibration factor for the transducer, you may enter its value directly.
Many manufacturers supply that value with the transducer. Typically, the
50µV/V/cmHg (or 5µV/V/mmHg) sensitivity may vary. Inserting that value into the
equation: “__”µV per “__”V (excitation value) x 10 (10cm=100mm) = __mV. The
values are typically between 2.300 and 2.600mV for 5V excitation.
Now set up the spans for the channel. Setting the spans sets the lower and upper
units for the anticipated data range. If values fall outside the span, signals will
remain clipped until they fall back with the range. Spans should be modified last and
set to allow a cushion for anticipated data above normal. Calibration is now
completed. 0mm pressure will now read 0mmHg and when 100mmHg is applied the
reading will be 100mmHg. Shown below is the Configuration tab after completion
of the transducer calibration.
Transducer Calibrated
44  Universal XE
ACQ 7700 Amplifiers
Accessories
This section lists the available accessories that are available for the Universal XE
signal conditioner.
Part Number
Description
J03590
Input Cable to BNC 10FT
J03587
Input Cable to 3 Lead ECG 10FT
13-7759-IDP
Isolated/Defibrillation protected ECG Probe
13-7759-GPP
Isolated/Defibrillation protected General Purpose Probe
J03589
Input Cable to ISO POD 2.5FT
J03125
Xdcr BD P23XL Blood Pressure Transducer
P02041
Xdcr BD DT682018 Blood Pressure Transducer/No cable (10 pack)
J03588
Input Cable to BD Transducer / Blood Pressure 12FT
J03591
Buxco TRD5700 Pressure Transducer
J03345*
Xdcr Force for FT-302
J03482-40*
Hugo Sachs Stratham Transducer
J03446*
Differential Head Stage Amplifier
P02302-701*
YSI Temperature Probe
J03445-1*
Adaptor Cable for YSI Temperature Probe
J03586
Adaptor Cable 18”
* Requires J03586 (Adaptor Cable 18”) Consult the factory for additional input
accessories and cables.
Specifications
The 13-7715-59 Universal XE signal conditioner is a four-channel signal conditioner
designed specifically to work with signals from low level input voltage and
transducers with sensitivities from 50µV to 5V full scale. All channels are identical,
but can be independently configured. Each channel has its own programmable
voltage excitation supply as well. Programmable eight-pole low pass filters for each
channel are available for both noise and anti-alias filtering. The total functionality of
each channel is controlled through the Ponemah software.
Input Circuit (typical of each channel)
Differential non-isolated balanced to ground
10MΩ each input to common
Input Type: DC Input Impedance, AC Input Impedance
Greater than 100kΩ at 1kHz
Maximum input ±20VDC or peak AC
ACQ 7700 Amplifiers
Universal XE  45
Measurement Range
Linear Range:
Bipolar: ±25µV to ±5V full scale
Unipolar: 0-50µV to 0-5V full scale
Transducer Excitation
Type:
Bipolar/Unipolar
Voltage:
Off, 2.5, 5.0,7,5 ±1%, and 10VDC, ±5%
Resolution:
12 BIT
Maximum current:
15mA
Signal Conditioner Output
A/D Converter:
16 BITS
Sample Rate:
100kHz per channel maximum
Accuracies
DC Mode Gain Accuracy:
±0.5% FS in mV ranges
DC Mode Zero Error:
<±0.4% of FS in the mV ranges
FILTERS:
Low pass eight-pole DSP Bessel with seven selectable settings of:
10, 30, 100, 300, 1000, 3000Hz and OFF (OFF= > 5kHz)
High pass single-pole Bessel with nine selectable settings of:
DC, 0.05, 0.1, 0.3, 1.0, 3.0, 10, 30, and 100Hz, ±10%
COMMON MODE:
-60dB minimum with 1kΩ unbalance @ 60Hz
CROSSTALK:
-90dB minimum between adjacent channels on ±500mV range
NOISE:
46  Universal XE
DC to 1kHz:
Less than 10µVP-P typical at max gain
DC to 5kHz:
Less than 20µV P-P at max gain
ACQ 7700 Amplifiers
ZERO SUPPRESSION:
Voltage Range
Max Suppression
±5V to ±200mV
±5V
±200mV to ±0.2mV
±0.5V
Less than 0.2mV
±0.05V
Resolution:
16 bits
Transducer Mode
Measurement Range:
50µV to 5.0V full scale
Frequency Response: Uses Low Pass eight-pole DSP Bessel filter with seven
selectable settings of:
10, 30, 100, 300, 1000, 3000Hz, and OFF (OFF = > 5kHz)
ACQ 7700 Amplifiers
Accuracy @ -3dB:
±5% of indicated frequency
High Pass Filter:
DC coupled only
Universal XE  47
Carrier
Introduction
This section describes the installation, operation, and specifications for the ACQ7700 Carrier signal conditioner, model number 13-7715-35. This signal conditioner
is designed specifically to stimulate and measure up to four variable reluctance
pressure transducers, such as the Validyne DP-45 and DP-250. The system software
controls signal gain, offset, and data acquisition parameters.
Analog Inputs
Transducers can be supplied by DSI/Ponemah with the proper 7 pin Lemo connector
to plug directly into the front plate of the signal conditioner.
This signal conditioner is not intended to be used as a general analog voltage input
device.
NOTE: Input connectors are sensitive to static discharge, observe precautions when
handling.
48  Carrier
ACQ 7700 Amplifiers
Input Signal Connections
The 7 pin Lemo signal input connections are shown below.
View From Front of Signal Conditioner
ACQ 7700 Amplifiers
Pin
Carrier 13-7715-35
1
Excitation Voltage +
2
+ Input
3
+ Input
4
- Input
5
- Input
6
Ground
7
Excitation Voltage -
Carrier  49
Configuring the Carrier Signal Conditioner
From the Ponemah software Calibration menu, select 7700 Amplifier Setup.
In the figure below, Carrier General Tab, the Carrier signal conditioner has been
selected. When a signal conditioner type is selected, a tab is brought to the
foreground and a group of parameters specific to that signal conditioner are
displayed. The tabs are titled: General, Configuration, and Description.
General Tab
The General tab allows the user to set up channel specific signal conditioner
parameters. The General tab includes: Label, Low Pass setting, Low Span, High
Span, and Units.
Carrier General Tab
Value
This column continuously displays the current value of the input signal in user units.
This column is updated by the system once every second.
This column is useful in troubleshooting the signal conditioner input connection.
The Value column can also be set to display the input Voltage in millivolts (see the
Voltage View section below).
50  Carrier
ACQ 7700 Amplifiers
Label
Label allows the user to type in a logical name of up to 10 characters for a particular
input channel. The chosen name will be saved and used to identify the input data
throughout the system, such as in the dialog that displays input channel information.
Low Pass
This function sets the corner frequency of filtering to the input signal.
A detailed description of the filter settings is listed in the Specifications section of
this manual under the Filter Settings heading.
Low Span
The Low Span sets the minimum value, in user units, that will be recorded.
The Low Span minimum and maximum limits are calculated through an internal
formula that takes into account the physical limits of the hardware and the user
calibration set-points. The Low Span value can be set by double clicking on the Low
Span cell for a particular channel in the General Tab dialog box.
The following conditions will cause the Low Span to display Invalid and revert to
the last valid Low Span setting:

Attempting to set the Low Span to the same value as High Span

Attempting to set the Low Span out of the range of the Min and Max
limits
The system may automatically change the Low Span setting if changes to the High
Cal, Low Cal, High Unit, or Low Unit would cause the Low Span to be set outside of
the physical limits of the amplifier.
ACQ 7700 Amplifiers
Carrier  51
High Span
The High Span sets the maximum value, in user units, that will be recorded.
The High Span minimum and maximum limits are calculated through an internal
formula that takes into account the physical limits of the hardware and the user
calibration set-points. The High Span value can be set by double clicking on the
High Span cell for a particular channel in the General Tab dialog box.
The following conditions will cause the High Span to display Invalid and revert to
the last valid High Span setting:

Attempting to set the High Span to the same value as Low Span

Attempting to set the High Span out of the range of the Min and Max
limits
The system may automatically change the High Span setting if changes to the High
Cal, Low Cal, High Unit, or Low Unit would cause the High Span to be set outside
of the physical limits of the amplifier.
Units
The Units box displays the user units as entered in the Configuration Tab.
52  Carrier
ACQ 7700 Amplifiers
Configuration Tab
The Configuration Tab allows the user to generate an internal conversion factor
between the millivolt output of the actual transducer and a meaningful unit of
measure (user units). This tab also enables the user to calibrate the transducer.
Carrier Configuration Tab
Value
This column continuously displays the current value of the input signal in user units.
This column is updated by the system once every second.
The Value column can also be set to display the input Voltage in millivolts (see the
Voltage View section below).
ACQ 7700 Amplifiers
Carrier  53
Low Cal
The Low Cal value sets the millivolt value that corresponds to the Low Unit user
value. A voltage input that is equal to the Low Cal setting will display the value of
the Low Unit setting in the Value column in user measurements.
The Measure button takes the millivolt value at the input of the signal conditioner,
based on the Measure Settings, as the Low Cal set-point at the time the measure
button is pressed.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.

Current – Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
NOTE: The Average selection with a Time of one second is the default setting for
the Universal, Bridge, Transducer, ABDC and Carrier signal conditioners. The
previous method utilized to determine Low and High Cal values was to take the
value at the time that the Measure button was selected.
If the gage factor (sensitivity) value is known, that value can be typed in and used. If
this is the case, a measure does not need to be performed, but performing a measure
is recommended.
Changing this field should not interact with any other field (Low Span or High
Span) if the field is currently in range.
54  Carrier
ACQ 7700 Amplifiers
The calibration values entered are in the base units of the signal conditioner
(millivolts).
High Cal
The High Cal value sets the millivolt value that corresponds to the High Unit user
value. A voltage input that is equal to the High Cal setting will display the value of
the High Unit setting in the Value column in user measurements.
The Measure button takes the millivolt value at the input of the signal conditioner,
based on the Measure Settings, as the High Cal set-point at the time the measure
button is pressed.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.

Current – Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
NOTE: The Average selection with a Time of one second is the default setting for
the Universal, Bridge, Transducer, ABDC and Carrier signal conditioners. The
previous method utilized to determine Low and High Cal values was to take the
value at the time that the Measure button was selected.
If the gage factor (sensitivity) value is known, that value can be typed in and used. If
this is the case, a measure does not need to be performed, but performing a measure
is recommended.
ACQ 7700 Amplifiers
Carrier  55
Changing this field should not interact with any other field (Low Span or High
Span) if the field is currently in range.
The calibration values entered are in the base units of the signal conditioner
(millivolts).
Low Unit
The Low Unit value sets the user value that corresponds to the Low Cal voltage
measurement. The value in this box is displayed in the Value cell and in user
measurements when the input voltage is equal to the Low Cal value.
Changing this field should not interact with any other field (Low Span or High
Span) if the field is currently in range.
High Unit
The High Unit value sets the user value that corresponds to the High Cal voltage
measurement. The value in this box is displayed in the Value cell and in user
measurements when the input voltage is equal to the High Cal value.
Changing this field should not interact with any other field (Low Span or High
Span) if the field is currently in range.
Units
Units allow the user to enter the actual engineering unit of measure. The Units
default is millivolts (mV), but may be changed to any engineering units. The User
Unit input field is limited to 9 characters.
Typical User Units could be: mmHg, inH2O, L/Min, mL/Sec
Descriptions Tab
The Descriptions tab allows the user to enter a text description for each input and to
further describe the parameters being recorded, including additional user information
or test setup information. Description Tab information is stored with the calibration
information in a log file. Double click on the text area, type in the information, and
then click on the OK button. Below is a typical Description Tab.
56  Carrier
ACQ 7700 Amplifiers
Carrier Description Tab
ACQ 7700 Amplifiers
Carrier  57
Voltage View and Resetting
The Carrier signal conditioner has the capability of viewing its values for debugging
purposes and also resetting each channel if a problem has occurred during setup.
Voltage View
The Low Span, High Span, and Value cells normally indicate parameters in User
Units. The Voltage View mode allows these parameters to be displayed in
millivolts.
In any of the cells that accept user input, a right click opens up the Reset Channel
Settings/Voltage View menu. By left clicking on Voltage View, a check is placed
next to the text and the Voltage View mode is entered. The Low Span, High Span,
and Value columns are then displayed in green with millivolt values substituting the
user values, and the Units column is displayed in gray.
Voltage View Menu
The signal conditioner has a minimum and maximum input voltage range that can be
resolved, and sometimes when applying user units the amplifier must change span
ranges so that these minimum and maximum conditions are not violated. The
Voltage View mode allows the user to check the current amplifier settings against
the limits of the amplifier as listed in the amplifiers specifications.
58  Carrier
ACQ 7700 Amplifiers
Voltage View
To return back to normal view, select Voltage View again.
Reset Channel Settings
The Reset Channel Settings selection allows a channel to be quickly reset to default
conditions. In any cell that accepts user input, a right click opens up the Reset
Channel Settings/Voltage View menu. By performing a left click on the Reset
Channel Settings selection, the Reset procedure is started. The user is asked for
confirmation before setting the channel to these defined settings:
ACQ 7700 Amplifiers
Label:
The signal Conditioner Slot and the Channel number
Low Pass:
30Hz
Low Span:
-140 (mV)
High Span:
140 (mV)
Low Cal:
-100 (mV)
High Cal:
100 (mV)
Low Unit:
-100
High Unit:
100
Units:
mV
Carrier  59
Calibration Procedure
Calibration Overview
The Low/High Cal settings and the Low/High Unit settings are used by the system to
convert the transducer output (in millivolts) to a meaningful unit of measure (user
units). The system software internally generates a conversion graph with the
millivolt input on the X axis, and user units on the Y axis. The slope of the line is
determined internally from six user entered values (High Span, Low Span, High Cal,
Low Cal, High Unit, and Low Unit). The Low Span, High Span, Low Unit, and
High Unit settings set the four points on the Y axis. The Low Cal and High Cal
settings set two points on the X axis. The system internally calculates the two
remaining points on the X axis by projecting a straight line from the user entered
points. The system will automatically change the High Span and/or Low Span if the
internally generated span exceeds the physical capabilities of the signal conditioner.
The system will always maintain a straight line between the four points on the graph
and prevent the physical capabilities of the signal conditioner from being exceeded.
High Span in User Units
(Set in the General Tab)
Y Axis (User Units)
High Unit in User Units
(Set in the Configuration Tab)
Low Unit in User Units
(Set in the
Configuration Tab)
Low Span in User Units
(Set in the General Tab)
Low Span in mV
(Calculated from user units
internally and limited by the
physical properties of the signal
conditioner)
High Span in mV
(Calculated from user units
internally and limited by the
physical properties of the signal
conditioner)
High Cal in mV
(Set in the Configuration Tab)
Low Cal in mV
(Set in the Configuration Tab)
X Axis (millivolts)
Calibration Graph
Connecting Fittings
The fittings on the Validyne pressure transducers (DP-45s) have straight NPT fittings
and may require some type of thread seal tape (like Teflon® tape). It is not
recommended to use pipe dope because some types of pipe dope contain hazardous
chemicals and they may react with compounds in the user's studies.
60  Carrier
ACQ 7700 Amplifiers
Typical Calibration Procedures
A Validyne pressure transducer connected to a Pneumotachograph or Laminar Flow
Element will read a flow rate.
The procedure for setting up the channel requires that the user knows the final
maximum and minimum flow rates, and can generate a known flow to set the
calibration points and conversion units.
Bias Flow Calibration
This section will run through the calibration of a transducer using a bias flow.
A. Verify that the two known flow rates are within the current span of the
transducer, by setting the channel to a default state.
The channel input can be returned to a default span with the following:
In any cell that accepts user input, a right click opens up the Reset
Channel Settings/Voltage View menu. By performing a left click on
the Reset Channel Settings selection, the Reset procedure is started.
Select the Yes option to reset the channel.
The default span has now been set to resolve the full Validyne
transducer range.
B. Set the user units for the transducer in the Units column (for example
mL/S).
C. Determine the two points that will be used for the low calibration and
high calibration points. It is recommended to use as wide of a range as
possible for the calibration points.
D. Set the low flow rate as determined in step C.) in the transducer.
E. Open the measure dialog for the Low Cal on the channel that is being
calibrated. Click on the Measure button to measure the existing value
(select the appropriate Measure Settings).
F.
Set the Low Unit value equal to the Low Cal value. This is a
temporary step required to make sure that the software does not change
the span range of the amplifier, which would prohibit the user from
making the High Cal measurement.
G. Set the high flow rate as determined in step C.) into the transducer.
H. Open the measure dialog for the High Cal on the channel that is being
calibrated. Click on the Measure button to measure the existing value
(select the appropriate Measure Settings).
I.
Enter the low calibration point in user units in the Low Unit cell, as
determined in step C.).
J.
Enter the high calibration point in user units in the High Unit cell, as
determined in step C.).
NOTE: At no time can the Low Unit and High Unit values be the same, the
software will display an Invalid condition if this is attempted.
K. Select the General tab and set the Low Span (the lowest flow rate to
measure) in user units.
ACQ 7700 Amplifiers
Carrier  61
L. Set the High Span (the highest flow rate to measure) in user units.
Non Bias Flow Calibration
This section will run through the calibration of a transducer using a non bias flow.
A. Verify that the known flow rate is within the current span of the
transducer, by setting the channel to a default state.
The channel input can be returned to a default span with the following:
In any cell that accepts user input, a right click opens up the Reset
Channel Settings/Voltage View menu. By performing a left click on
the Reset Channel Settings selection, the Reset procedure is started.
Select the Yes option to reset the channel.
The default span has now been set to resolve the full Validyne
transducer range.
B. Set the user units for the transducer in the Units column (for example
mL/S).
C. Determine the calibration point. Typically the calibration point is
approximately 90% of full scale.
D. Open the transducer to air.
E. Open the measure dialog for the Low Cal on the channel that is being
calibrated. Click on the Measure button to measure the existing value
(select the appropriate Measure Settings).
F.
Set the Low Unit value equal to the Low Cal value. This is a
temporary step required to make sure that the software does not change
the span range of the amplifier, which would prohibit the user from
making the High Cal measurement.
G. Set the high flow rate as determined in step C.) in the transducer.
H. Open the measure dialog for the High Cal on the channel that is being
calibrated. Click on the Measure button to measure the existing value
(select the appropriate Measure Settings).
I.
Set the Low Unit value to 0, as determined in step C.
J.
Enter the high calibration point in user units in the High Unit cell, as
determined in step C.).
NOTE: At no time can the Low Unit and High Unit values be the same, the
software will display an Invalid condition if this is attempted.
K. Select the General tab and set the Low Span (the lowest flow rate to
measure) in user units.
L. Set the High Span (the highest flow rate to measure) in user units.
Intrapleural, Esophageal, or Thoracic Pressure Calibration
The calibration for pressure is the same procedure used in the Non Bias Flow
Calibration Section (above), except that units will be a pressure (for example
“In/Hg”), and the term “pressure” replaces the term “flow rate”.
62  Carrier
ACQ 7700 Amplifiers
Calibration Verification and Minor Adjustments
Once the transducer has been calibrated using the above procedures, minor changes
can be made to the High Cal and Low Cal values without requiring changes to the
Low Unit and High Unit values, and without changes being made to the Low Span
and High Span values by the software.
The reason this would be done is if the same transducer and Carrier signal
conditioner are being used after a long idle time.
Prior to performing changes to either High Cal or Low Cal, make sure that the
number in the Value column falls within the Low Span and High Span setting prior
to pressing the Measure button. For the Measure button to work properly, the
transducer must be generating a signal that is inside of the user span. If the
calibration points cannot be measured properly, the user must return to the basic
calibration procedure.
Pneumotachograph Sizing (Validyne)
Size the pneumotachograph as required for the application (typical values):
0-3L/min - Mouse
0-5L/min - Guinea Pig and Rat
0-10L/min - Rabbit
0-35L/Min - Small Canine
0-100L/Min - Medium Canine
0-160L/Min - Large Canine
The pneumotachograph converts the flow into a differential pressure as the air flow
passes through a controlled restriction in the pneumotachograph. The Validyne
pressure transducer is connected to these differential pressure ports. The "+" side of
the transducer is connected to the pressure port on the inlet side (animal side) of the
pneumotachograph and the "-" side of the transducer is connected to the pressure
port on the outlet side of the pneumotachograph.
To determine the amount of differential pressure generated by a particular flow rate,
the pneumotachograph is supplied with a "calibration factor" (typically listed on the
data sheet, or on the actual pneumotachograph). Make sure the flow units match the
units listed in the calibration factor before determining the differential pressure (for
example, if the calibration factor is in (mmH2O)/(L/Min), the flow rate must be
expressed in L/Min).
Flow _ Rate
L
60Sec
L

 Flow _ Rate
Min
Min
Sec
Figure A: Convert flow rate in Liters per Second to Liters per Minute
Flow _ Rate
L
60Sec
L
mL


 Flow _ Rate
Min
Min 1000mL
Sec
Figure B: Convert flow rate in milliliters per Second to Liters per Minute
ACQ 7700 Amplifiers
Carrier  63
Diffpress  Cal _ Factor  Flow _ Rate
Figure C: Differential Pressure Calculation
In the above equation, Cal_Factor represents the calibration factor published by the
manufacturer of the pneumotachograph and Flow_Rate is the actual flow rate
through the pneumotachograph. The Differential pressure Diffpress is in units
expressed in the calibration factor: for example, if the calibration factor is in
(mmH2O)/(L/Min), the pressure will be expressed as mmH2O.
The Validyne transducers are listed with the maximum amount of pressure the
transducer can resolve in cmH2O for a given diaphragm (The diaphragm type is
supplied as part of the transducer part number). To convert units of pressure, the
following typical equations can be used.
Diffpress cmH 2O 
cm
 Diffpress mmH 2O
10mm
Figure D: Convert pressure in mmH2O to cmH2O
Diffpress cmH 2O 
2.54cm
 Diffpress inchesH2O
inch
Figure E: Convert pressure in inches of H2O to cmH2O
To determine the amount of deflection the transducer will have for a various flow
rate, use the pressure calculated in Figure C and convert it to units in cmH2O. The
measured pressure can then be compared against the maximum pressure that the
transducer can resolve.
Output % 
Diffpress
 100
Maxpress
Figure F: Determining Deflection %
In the above equation, Diffpress is the actual differential pressure as calculated in
Figure C and converted to units in cmH2O. Maxpress is the maximum pressure that
the transducer can resolve, also in cmH2O. Output% is the percentage of full scale
that the transducer is generating.
To determine if a given pneumotachograph and transducer combination will work in
a given application, calculate the Output% figure for minimum flow rates and
maximum flow rates. Verify that neither of these figures exceed 100%, and that the
subtraction of these two figures are not less than 0.8%.
Note that typically the Validyne transducer generates 25mV/V of excitation, the
Carrier Signal Conditioner provides 5V of excitation, and can measure as little as
1mV of span. These factors set the lower limit of a full-scale reading to 0.8%. The
upper limit of 100% is determined by the physical properties of the transducer.
Applying a pressure of more than 100% to a transducer can cause the measurement
plate to bend and introduce unexpected offsets and inaccurate gains in future
measurements.
Synchronous Operation of Excitation Voltages
Many older transducer amplifiers suffered from various issues that involved the
excitation from one transducer being coupled to another transducer. One of the more
annoying issues was a "heterodyne" effect, in which two carrier frequencies
64  Carrier
ACQ 7700 Amplifiers
oscillating at slightly different frequencies would beat against each other causing an
offset that would slowly rise and fall over time. The Carrier signal conditioner is
tightly synchronized to the master clock of the ACQ-7700 acquisition system, so all
carrier waveforms are tightly synchronized eliminating the "heterodyne" effect.
Positioning of Transducers
Several issues can effect the operation of a transducer, causing offsets to
measurements:
ACQ 7700 Amplifiers

Gravity - The transducers include a thin stainless steel plate that is
moved by small pressure variations. The plate is so delicate that it can
sag slightly under its own weight when positioned horizontally, causing
a small offset voltage reading. The transducer should be mounted in a
vertical position (the mounting bar should be horizontal for DP-45
installations, and the DP-250 should be mounted to a horizontal
surface) to minimize the effects of gravity on the transducer.

Vibration - The transducer plate has a finite mass and is highly
susceptible to vibration, which can cause random or periodic noise on
the measured voltage. The transducers should be mounted to a stable
mass not subject to vibration.

Magnetic Coupling - The magnetic flux generated by a transducer can
induce a small offset on other transducers that are located extremely
close together. Each transducer should be mounted at least 2” away
from other transducers.

Capacitive Coupling - The transducer generates a voltage across two
coils, by introducing stray sources of capacitance, the resonant
properties of the coil can change generating an offset. Cables contain a
small amount of internal capacitance and can be the source of offset.
Care should be taken to prevent any conductive material from coming
into contact with the transducer body that could cause capacitive
coupling. The human body also acts as a capacitive source, and by
touching the exposed case of the transducer can generate small amounts
of offset.
Carrier  65
Accessories
This section lists the accessories that are available for the Carrier signal conditioner.
Validyne transducer (DP45)- J03399-14(±2.25cmH2O), J03399-24(±22.5cmH2O)
Validyne transducer (DP250) - J03423-14(±2.25cmH2O), J03423-24(±22.5cmH2O)
Validyne transducer adapter cable (Cannon to Lemo) - J03397
Specifications
The 13-7715-35 Carrier signal conditioner is a four-channel signal conditioner
designed specifically to work with signals from a Validyne transducer. All channels
are identical, but can be independently configured. The total functionality of each
channel is controlled through the Ponemah software.
Excitation Voltage
5VRMS @ 5kHz up to 200mA. Short circuit protected.
Output waveform is synchronized channel to channel, amplifier to amplifier.
Accuracy is determined by the system clock accurate to ±50ppm.
A/D Converter
16 bit
Sample Rate
5kHz, synchronous conversion to excitation voltage (sideband decoding)
Input
±500µV full scale to ±300mV full scale (0.2mV/V to 120mV/V), continuously
variable gain over range
Input Impedance
>10MΩ
Zero Suppression
±250mV continuously variable
Zero Suppression Error
< ±0.5%
66  Carrier
ACQ 7700 Amplifiers
Filter Settings
100Hz, 10th order Butterworth digital IIR filter with 100Hz (±5%) low pass 2 pole
Sallen-Key Bessel filter (hardware implemented).
30Hz, 6th order Butterworth digital IIR filter.
10Hz, 5th order Butterworth digital IIR filter.
Noise
< 0.02% all scale settings, all filter settings
Input Offset Voltage
< ±2.5mV (0.1% of Excitation Voltage)
Gain Error
< ±0.5% of full scale input
Linearity
< ±0.1% of full scale input
ACQ 7700 Amplifiers
Carrier  67
DCOM & BIO12 Pod
Introduction
This section describes the installation, operation and specifications for the
DSI/Ponemah DCOM module, Model Number 13-7715-70 and the 12 channel
isolated bio-potential, Model Number13-7770-BIO12. The DCOM module is a user
installable module compatible with the ACQ-7700. For more information on where
and how this module and associated pod can be used, contact your local
DSI/Ponemah representative.
The ACQ-7700 DCOM module is a digital communication module that works with
assorted pods. The DCOM occupies a single slot of the ACQ-7700 chassis, controls
and reads data from a pod and formats data from the pod to be interpreted by the
recording system. The system software controls the viewing and acquisition of this
data.
The 12 Channel Isolated Bio-potential pod can accept a wide range of A/C biopotentials such as EMG, ECG and ENG. The inputs of the pod have galvanic
isolation from the ACQ-7700 chassis.
DCOM Connections
The DCOM module is connected to the BIO12 Pod through an eight conductor
serial link cable. There are no user available inputs or outputs on the DCOM.
BIO12 Signal Connections
Input to the BIO12 Pod is through 1.5mm pin jack connectors which are common to
many types of commercially available electrodes. Inputs are referenced to the ISO
GND connection and isolated from the 7700 Chassis.
MAXIMUM VOLTAGE ABOVE ISO GND TO EITHER INPUT TERMINAL
IS +/-30VDC. EXCEEDING THIS VALUE CAN CAUSE DAMAGE.
68  DCOM & BIO12 Pod
ACQ 7700 Amplifiers
Configuring the DCOM for BIO12 Pod
In the figure below, BIO12 General Tab, the DCOM module automatically detects
and presents information for the BIO12 Pod, when connected. When a signal
conditioner type is selected, its tab is brought to the foreground and a group of set up
menus specific to that signal conditioner is displayed. General, Configuration, and
Descriptions tabs can be displayed, each of which are accessed by clicking on the tab
heading.
General Tab
The General tab, as seen in the DCOM module, allows the user to set up channel
specific connected Pod parameters, including the Label, Low Pass Filters, and
Low/High Span.
BIO12 General Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
This column is useful in troubleshooting the signal conditioner input connection.
ACQ 7700 Amplifiers
DCOM & BIO12 Pod  69
Label
Label allows you to type in a logical name of up to 10 additional characters for a
particular input channel. The chosen name will be saved and used to identify the
input data throughout the system, such as in the dialog that displays input channel
information.
Low Pass
Adjust the Low Pass Filter settings as required. For most applications, the default
setting of 300Hz is adequate.
Low/High Span
The span defines the sensitivity or scale for each channel. When setting up channel
parameters, SPAN should be set last. Span should be set slightly higher than the
largest anticipated input signal.
The Span can be set to any of the following millivolt ranges:
Low Span
High Span
-20
20
-10
10
-5
5
-1
1
-.5
.5
-.2
.2
-.1
.1
-.05
.05
-.02
.02
Units
This column displays the units that have been set in the Configuration tab and
cannot be changed in this tab. The Units have no effect on the channel and are used
for documenting the Input units.
70  DCOM & BIO12 Pod
ACQ 7700 Amplifiers
Configuration Tab
The Configuration Tab allows the user to generate an internal conversion factor
between the millivolt input to the BIO12 and a meaningful unit of measure (user
units) or to calibrate the input signal to a known reference.
BIO12 Configuration Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
Low Cal & High Cal
The Low Cal and High Cal settings are used in conjunction with the Low Unit and
High Unit settings to allow the user to convert an input voltage to a user defined
scale.
The Low Cal value sets the millivolt value that corresponds to the Low Unit user
value. A voltage input equal to the Low Cal value will display the Low Unit value
(in the Value column). Likewise, the High Cal value sets the millivolt value that
corresponds to the High Unit user value. A voltage input equal to the High Cal value
will display the High Unit value.
ACQ 7700 Amplifiers
DCOM & BIO12 Pod  71
Measure
Double clicking on a Low Cal or High Cal box will open an associated “Measure”
dialog box.
The input to the BIO12 is AC coupled which prevents calibration from a DC source
voltage. An AC calibration source (that is capable of millivolt/microvolt output) can
be used to calibrate the input to a known AC voltage by performing a “Minimum”
measure in the Low Cal dialog, a “Maximum” measure in the High Cal dialog,
setting the Low Unit to the negative peak of the AC calibrator output and the High
Unit to the positive peak of AC calibrator output.
Note that since the inputs are AC coupled, DC offsets from the signal source are
automatically removed.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.
72  DCOM & BIO12 Pod

Current – Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed. Note that since the inputs are AC coupled,
unexpected results may occur when attempting to measure with this setting.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
ACQ 7700 Amplifiers
Low Units & High Units
The user can select the units to be displayed. Combined with Low Cal and High Cal,
the user can set “x” value in Cal to equal “y” number of units. Example: If
2.500mV is entered in the High Cal and 100 was entered in High Units, then
2.500mV = 100 units. Also see Measure Function.
Changing this field does not interact with any other field (Low Span or High Span).
Units
Units allow you to enter the actual engineering units being measured. The default is
mV but this may be changed to any engineering unit. The User Unit input field is
limited to 9 characters.
ACQ 7700 Amplifiers
DCOM & BIO12 Pod  73
Descriptions Tab
The Descriptions tab allows the user to enter a text description for each input and to
further describe the parameters being recorded. This may include additional user
information or test setup information. This information is stored with the test set up
in a text file. It is not directly used as part of the signal conditioner configuration but
is available for review whenever desired. Double Click on the text area, type in the
information, and then click on the OK button. Below is a typical Description tab.
BIO12 Descriptions Tab
74  DCOM & BIO12 Pod
ACQ 7700 Amplifiers
Voltage View and Resetting
The BIO12 has the capability of viewing input voltage instead of the input in user
units for debugging purposes and also the ability of resetting each channel if a
problem has occurred during setup.
Voltage View
By performing a right click on a channel (anywhere except for the Input Identifier or
Value columns) and selecting Voltage View, raw voltages are displayed in place of
user units in the Value cell. Below is an example of the right click menu that will
appear.
Voltage View Menu
Once voltage view has been selected, the values listed for Value, Low Span, and
High Span are listed in millivolts Those column values will change from black to
green to notify the user that the values are in Voltage View mode. Also, the Units
column entry will change from black lettering to gray lettering. Shown below is an
example of the 7700 Modules dialog with voltage view set.
ACQ 7700 Amplifiers
DCOM & BIO12 Pod  75
Voltage View
To return back to normal view, select Voltage View again.
Reset
This selection allows the user to reset the settings of the channel selected. When
selected, the channel will reset all columns dependent on which mode is currently
selected. View the Mode section for default settings. When this selection is
selected, a message box will appear asking if the channel should be reset. This
allows the user to select No to cancel the resetting of the channel and Yes to reset the
channel.
76  DCOM & BIO12 Pod
ACQ 7700 Amplifiers
Accessories
This section lists the available accessories that are available for the 12 Bio-potential
Pod.
Part Number
Description
J03557-20
SERIAL LINK CABLE, 20FT, 7700 ISO POD TO DCOM
P02407-0
LEAD 36”, 1.5MM PLUG TO UN-TERMINATED, BLK
P02407-2
LEAD 36”, 1.5MM PLUG TO UN-TERMINATED, RED
P02407-5
LEAD 36”, 1.5MM PLUG TO UN-TERMINATED, GRN
P02409-0
ADAPTER, TOUCH PROOF, 1.5MM TO 2MM, BLK
P02409-2
ADAPTER, TOUCH PROOF, 1.5MM TO 2MM, RED
P02409-5
ADAPTER, TOUCH PROOF, 1.5MM TO 2MM, GRN
Consult the factory for additional input accessories and cables.
Specifications
The 13-7715-70 DCOM module and BIO12 Pod are designed specifically to work
with signals from low level input voltages with sensitivities from 40µV to 40mV full
scale. All channels are identical, but can be independently configured. Each channel
has a programmable eight-pole low pass filter. The total functionality of each
channel is controlled through the Ponemah software.
Input Circuit (typical of each channel)
Differential isolated balanced to ground
Greater than 10MΩ each input to common at DC. Impedance can be approximated
witha 10MΩ resistor in parallel with a 1.6nF capacitor.
Maximum input ±30VDC
Leakage < 10uA at 265 VRMS
Measurement Range
Linear Range:
40µV to 40mV full scale
Signal Conditioner Output
A/D Converter:
16 BITS
Sample Rate:
20kHz per channel maximum
12 Bio-potential Pod Accuracies
FILTERS:
Selectable: 100Hz, 300Hz or 1000Hz Low pass.
ACQ 7700 Amplifiers
DCOM & BIO12 Pod  77
Eight-pole DSP based Bessel settings of: 100Hz, and 300Hz ±3% in conjunction
with a hardware implemented five-pole Bessel filter at 1000Hz ±15%.
Non-selectable: .05Hz ±20% High Pass (hardware implemented).
COMMON MODE:
Less than -90dB
CROSSTALK:
Less than -60dB (measured at 36mVpk-pk 10 Hz with all channels set to same gain
range)
LINEARITY:
±0.5% of full scale
NOISE:
Less than 20 uV pk-pk
Gain Error:
Less than ±0.5% full scale
Zero Drift typ:
0.01% of full scale per degree C
78  DCOM & BIO12 Pod
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod
(ECG12)
Introduction
This section describes the installation, operation and specifications for the
DSI/Ponemah DCOM module, Model Number 13-7715-70 and the Multi-Lead ECG
Pod, Model Number13-7770-ECG12. The DCOM module is a user installable
module compatible with the ACQ-7700. For more information on where and how
this module and associated pod can be used, contact your local DSI/Ponemah
representative.
The ACQ-7700 DCOM module is a digital communication module that works with
assorted pods. The DCOM occupies a single slot of the ACQ-7700 chassis, controls
and reads data from a pod and formats data from the pod to be interpreted by the
recording system. The system software controls the viewing and acquisition of this
data.
The Multi-Lead ECG Pod uses the standard 10 lead input connections and derives by
Einthovens triangle the standard and augmented leads: I, II, III, aVF, aVL, and aVR.
V1 through V6 are generated using Wilsons Central Terminal. Other V leads may be
substituted for any of the V leads, 1 through 6.
DCOM Connections
The DCOM module is connected to the Multi-Lead ECG Pod through an eight
conductor serial link cable. There is one available BNC connector used as a TTL
output.
Multi-Lead ECG Signal Connections
ECG Lead Connections
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  79
The ECG input is a type "CF” input and is isolated and protected from the effects of
defibrillation. In order for the Multi-Lead ECG Pod to work correctly, the ECG
leads must be connected to the subject using the supplied input harness (274-7000001) and patient cable set. Each input lead is labeled with RL, LL, RA, LA, and V1
through V6.
The other end of the input harness is connected to the side panel 15-pin connector
labeled ECG Input.
This 15 pin D-SUB connector provides the connection to the ECG input cable.
Pin
Signal
Pin
Signal
1
Chest Lead 2
9
Right Arm
2
Chest Lead 3
10
Left Arm
3
Chest Lead 4
11
Left Leg
4
Chest Lead 5
12
Chest Lead 1
5
Chest Lead 6
13
No Connection
6
Shield
14
Right Leg
7
No Connection
15
No Connection
8
No Connection
Table 1, ECG input connector pin descriptions
80  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Configuring the DCOM for Multi-Lead ECG Pod (ECG12)
In the figure below, ECG12 General Tab, the DCOM module automatically detects
and presents information for the Multi-Lead ECG Pod, when connected. When a
signal conditioner type is selected, its tab is brought to the foreground and a group of
set up menus specific to that signal conditioner is displayed. General, Configuration,
Description, and Features tabs can be displayed, each of which are accessed by
clicking on the tab heading.
General Tab
The General tab, as seen in the DCOM module, allows the user to set up channel
specific connected Pod parameters, including the Label, Low Pass Filters, and
Low/High Span.
ECG12 General Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
This column is useful in troubleshooting the signal conditioner input connection.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  81
Label
Label allows you to type in a logical name of up to 10 additional characters for a
particular input channel. The chosen name will be saved and used to identify the
input data throughout the system, such as in the dialog that displays input channel
information. The label column is automatically populated with the appropriate Lead
type.
Low/High Pass
Adjust the Low Pass Filter settings as required. The default setting for the low pass
filter is 500Hz while the default setting for the high pass filter is 0.1Hz. NOTE:
changing the filter settings on one channel will automatically change the filter on all
channels.
Low Pass Filter
High Pass Filter
Low/High Span
The span defines the sensitivity or scale for the channels. When setting up
channel parameters, SPAN should be set last. Span should be set slightly higher
than the largest anticipated input signal. NOTE: changing the span settings on one
channel will automatically change the span on all channels.
The Span can be set to any of the following ranges:
82  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Low Span
High Span
-25mV
25mV
-10mV
10mV
-5mV
5mV
-2.5mV
2,5mV
-1mV
1mV
-500uV
500uV
-250uV
250uV
Units
This column displays the units that have been set in the Configuration tab and
cannot be changed in this tab. The Units have no effect on the channel and are used
for documenting the Input units. The default units are in mV.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  83
Configuration Tab
The Configuration Tab allows the user to generate an internal conversion factor
between the millivolt input to the Multi-Lead ECG Pod and a meaningful unit of
measure (user units) or to calibrate the input signal to a known reference (if desired).
ECG12 Configuration Tab
Value
This column continuously displays the current value that is on the input of the signal
conditioner. This column is updated by the system once every second and cannot be
updated by the user.
Low Cal & High Cal
There is no need to calibrate the Multi-Lead ECG Pod. Default values shown in the
configuration tab (± 100) provide a 1-to-1 relationship between the input voltage and
the user unit.
The Low Cal and High Cal settings are used in conjunction with the Low Unit and
High Unit settings to allow the user to convert an input voltage to a user defined
scale.
The Low Cal value sets the value that corresponds to the Low Unit user value. A
voltage input equal to the Low Cal value will display the Low Unit value (in the
Value column). Likewise, the High Cal value sets the value that corresponds to the
High Unit user value. A voltage input equal to the High Cal value will display the
High Unit value.
84  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Measure
Double clicking on a Low Cal or High Cal box will open an associated “Measure”
dialog box.
If desired, a calibration source can be used to calibrate the input to a known voltage
by performing a “Minimum” measure in the Low Cal dialog, a “Maximum” measure
in the High Cal dialog, setting the Low Unit to the negative peak of the calibrator
output and the High Unit to the positive peak of calibrator output.
Measure Settings: provides user control over how data is sampled and recorded for
the Low and High Cal values.
ACQ 7700 Amplifiers

Current – Will record the value at the end of the interval specified in the
Time column. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
the end point for calibration and will record the last data point when the
time interval is completed. Note that since the inputs are AC coupled,
unexpected results may occur when attempting to measure with this setting.

Maximum - Will record the maximum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Minimum - Will record the minimum value over the interval specified in
the Time field. After selecting the Measure button, the software will utilize
the following number of seconds entered in the Time column to determine
this value.

Average - Will record the average value over the interval specified in the
Time field. After selecting the Measure button, the software will utilize the
following number of seconds entered in the Time column to determine this
value.

Time - Number of seconds used to define the interval over which the
calibration value for the Maximum, Minimum, or Average will be sampled.
DCOM & Multi-Lead ECG Pod (ECG12)  85
Low Units & High Units
The user can select the units to be displayed. Combined with Low Cal and High Cal,
the user can set “x” value in Cal to equal “y” number of units. Example: If
1.000mV is entered in the High Cal and 1 was entered in High Units, then 1.000mV
= 1 unit. Also see Measure Function.
Changing this field does not interact with any other field (Low Span or High Span).
Units
Units allow you to enter the actual engineering units being measured. The default is
mV but this may be changed to any engineering unit. The User Unit input field is
limited to 9 characters.
86  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Descriptions Tab
The Descriptions tab allows the user to enter a text description for each input and to
further describe the parameters being recorded. This may include additional user
information or test setup information. This information is stored with the test set up
in a text file. It is not directly used as part of the signal conditioner configuration but
is available for review whenever desired. Double Click on the text area, type in the
information, and then click on the OK button. Below is a typical Description tab.
ECG12 Descriptions Tab
Features Tab (for Multi-Lead ECG Pod only)
The Features tab allows the user to select criteria for the QRS Detection and Baseline
Reset features. Below is a typical Features tab.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  87
ECG12Features Tab
QRS Detection
The system is able to detect a QRS complex and generate a TTL(transistor-transistor
logic) output to trigger external equipment via the BNC connector on the front of the
DCOM module. The following parameters are used to detect the pulse and are set by
the user.
Channel - The ECG channel that will be monitored. Can be set to any of the 12
leads. User can select the direction of the QRS pulse based on the ECG channel
selected (Positive, Negative, or both).
dV/dT Threshold - Settable 0 to 65535.
Dead Time - Time from pulse detection where a new pulse will not be generated.
Settable 0 to 3.0 seconds.
Delay Time - Time from QRS detection to TTL output pulse. Settable 0 to 3.0
seconds.
Baseline Reset
When selected, the low pass filter will reset when the signal saturates the selected
span range. The signal will be reset to a baseline condition, allowing the user to see
the ECG signal. The reset function can be disabled by the end user for both the Main
leads and V-leads.
Lead-Off Detection
Input leads on the graph page will display a square wave when one or more patient
cables affecting that input is not properly connected to the animal. It is
recommended that one graph page be created to display all leads being collected.
This will allow the user to quickly notice if any leads have fallen off the animal via
the lead-off detector feature.
88  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Lead
Animal Input Connections
I
Left Arm – Right Arm
II
Left Leg – Right Arm
III
Left Leg – Left Arm
aVR
Right Arm – ((Left Leg +Left Arm)/2)
aVL
Left Arm – ((Right Arm +Left Leg)/2)
aVF
Left Leg – ((Right Arm +Left Arm)/2)
V1
V1 – ((Right Arm + Left Arm + Left Leg)/3)
V2
V2 – ((Right Arm + Left Arm + Left Leg)/3)
V3
V3 – ((Right Arm + Left Arm + Left Leg)/3)
V4
V4 – ((Right Arm + Left Arm + Left Leg)/3)
V5
V5 – ((Right Arm + Left Arm + Left Leg)/3)
V6
V6 – ((Right Arm + Left Arm + Left Leg)/3)
Zero/Cal Buttons
The side panel has a Zero and Cal button. The following describes function of the
buttons.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  89

Zero - when the button is pressed, the pod zeros all outputs. The zero
voltage will be enabled as long as the Zero button is pressed. This can be
used for the low calibration value in the Ponemah system. This is also
useful to set the zero baseline value on a conventional chart recorder.

Cal - when the pressed, the pod will apply a calibration signal. The
calibration voltage will be enabled as long as the Cal button is pressed. This
can be used for the high calibration value in the Ponemah system. This is
also useful for setting the span on a conventional chart recorder. The
calibration signal will be present on all channels and is determined by the
amplifier full scale span.
Low Span
High Span
Cal Voltage
-25mV
25mV
1mV
-10mV
10mV
1mV
-5mV
5mV
1mV
-2.5mV
2,5mV
5mV
-1mV
1mV
100uV
-500uV
500uV
100uV
-250uV
250uV
100uV
NOTE: When the Zero or Cal, buttons is pressed, the high pass filters are
discharged, which will remove any saturation condition on the outputs due to a
disconnected input lead or a defib pulse.
90  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Voltage View and Resetting
The Multi-Lead ECG pod has the capability of viewing input voltage instead of the
input in user units for debugging purposes and also the ability of resetting each
channel if a problem has occurred during setup.
Voltage View
By performing a right click on a channel (anywhere except for the Input Identifier or
Value columns) and selecting Voltage View, raw voltages are displayed in place of
user units in the Value cell. Below is an example of the right click menu that will
appear.
Voltage View Menu
Once voltage view has been selected, the values listed for Value, Low Span, and
High Span are listed in millivolts Those column values will change from black to
green to notify the user that the values are in Voltage View mode. Also, the Units
column entry will change from black lettering to gray lettering. Shown below is an
example of the 7700 Modules dialog with voltage view set.
To return back to normal view, select Voltage View again.
Reset
This selection allows the user to reset the settings of the channel selected. When
selected, the channel will reset all columns dependent on which mode is currently
selected. View the Mode section for default settings. When this selection is
selected, a message box will appear asking if the channel should be reset. This
allows the user to select No to cancel the resetting of the channel and Yes to reset the
channel.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  91
92  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
Accessories/Replacement Parts
This section lists the available accessories that are available for the Multi-Lead ECG
Pod.
Part Number
Description
J03557-20
274-7000-001
SERIAL LINK CABLE, 20FT, 7700 ISO POD TO DCOM
10 Lead Input Harness, 6ft/1.8m, for Multi-Lead ECG POD
(13-7770-ECG12)
274-7001-001
10 Lead Patient Cable Set (Grabber), 29in/74cm, for MultiLead ECG POD (13-7770-ECG12)
274-7002-001
10 Lead Patient Cable Set (Banana), 29in/74cm, for Multi-Lead
ECG POD (13-7770-ECG12)
274-7004-001
Subdermal Needle Electrodes 27 GA, 6MM, 6ft/1.8m, Sterile
(quantity 25)
Consult the factory for additional input accessories and cables.
User Maintenance
User maintenance is generally limited to cleaning only. Disconnect the pod. Loose
dust and dirt may be removed with a soft cloth or brush. Any dirt remaining behind
can be removed with a soft cloth dampened with a mild detergent and water solution.
Do not allow liquid to enter the interior of the pod as electrical leakage
characteristics may change. Never use abrasive cleaners. Do not autoclave the pod.
The ECG cables may be cleaned by wiping them with a cloth dampened with a
solution of warm water and a mild detergent or USP soap tincture. Do not submerge
the cables. To disinfect the cables, wipe them with a sodium hypochlorite (bleach)
solution 10% in water. Do not use organic solvents. Ethylene oxide may be used to
sterilize the ECG cables. After cleaning, the cables should be cleaned with water
and dried with a clean cloth. Do not autoclave the cables. For further information
on cleaning the specific ECG cables, refer to literature from the manufacturer that
accompanies the cable.
Troubleshooting
The table below lists certain conditions that can occur and the corrective action to
take to resolve the problem. If the following actions do not solve the problem,
consult the factory prior to returning the unit for service.
Problem
No Output Signal
Noise on ECG Signal
ACQ 7700 Amplifiers
Solution
1.
2.
Verify that the power switch to the
ACQ 7000 is turned on.
Bad connection to subject..
1.
Verify that all subject connections
DCOM & Multi-Lead ECG Pod (ECG12)  93
Response Incorrect
2.
are correct.
Inspect cabling for breaks in
shielding.
Re-Certification of Performance
For continued safe operation and verification of specifications, it is recommended
that the pod, including the supplied input harness and leads, be recertified
(calibrated) annually by the factory. For further information please contact
Technical Support at 800-262-9687 (option 2) or e-mail support@datasci.com.
Specifications
The ECG inputs are available on the side panel via a captive 15 pin female, D-sub
connector.
Signal Input
Input Leads:
RA, LA, LL, RL, and V1-V6
Resolution
16 Bits
Sample rate
10 kHz, 12 channels MUX at 120 kHz
Input Impedance
 10M Ohms
Input Voltage
±250uV to ±25mV full scale
Defibrillator Protection
360 Joules delivered at 5000V
Isolation
chassis
 1500V rms for 1 minute, isolated circuits to
Leakage
10uA at 265 VRMS
Accuracy Specifications
FILTERS:
Selectable: 0.05Hz, 0.10Hz or 30.0Hz High pass (hardware implemented).
Selectable Low Pass Anti-Alias DSP filter settings of: 10Hz, 30Hz, 100Hz, and
300Hz ±3% in conjunction with a hardware implemented five-pole Bessel filter at
500Hz ±15%.
COMMON MODE:
Less than -90dB
94  DCOM & Multi-Lead ECG Pod (ECG12)
ACQ 7700 Amplifiers
CROSSTALK:
Less than -60dB (measured at 90% full scale input signal 10 Hz input with all
channels set to same gain range)
LINEARITY:
Less than ±0.5% of full scale
NOISE:
Less than 15 uV pk-pk or 0.1% of Full Scale (whichever is greater)
Gain Error:
Less than ±0.5% full scale
Classification:
The Multi-Lead ECG pod is classified as IP40.
ACQ 7700 Amplifiers
DCOM & Multi-Lead ECG Pod (ECG12)  95
Declaration Electromagnetic Emissions/Immunity
Electromagnetic Emissions/Immunity Tables
Guidance and manufacturer’s declaration – electromagnetic emissions
The equipment is intended for use in the electromagnetic environment specified below. The customer or the user of the
equipment should assure that it is used in such an environment.
Emissions Test
RF emissions
Compliance
Electromagnetic environment - guidance
Group 1
The equipment uses RF energy only for its internal function. Therefore,
its RF emissions are very low and are not likely to cause any interference
in nearby electronic equipment.
EN 55011
RF emissions
Class A
EN 55011
Harmonic emissions
Class A
EN 61000-3-2
Voltage fluctuations / flicker
emissions
Complies
The equipment is suitable for use in all establishments other than
domestic and those directly connected to the public low-voltage power
supply network that supplies buildings used for domestic purposes.
EN 61000-3-3
96  Declaration Electromagnetic Emissions/Immunity
ACQ 7700 Amplifiers
Guidance and manufacturer’s declaration - electromagnetic immunity
The equipment is intended for use in the electromagnetic environment specified below. The customer or the user of the
equipment should assure that it is used in such an environment.
Immunity test
Electrostatic discharge
(ESD)
IEC 60601 test
level
±6kV contact
±8kV air
Compliance
level
Electromagnetic environment - guidance
Complies
Floors should be wood, concrete, or ceramic
tile. If floors are covered with synthetic
material, the relative humidity should be at
least 30%.
±2kV for power
supply lines
±1kV for input /
output lines
±1kV differential
mode
±2kV common
mode
<5% Ut (>95% dip
in Ut) for 0,5 cycle
Complies
Mains power quality should be that of a
typical commercial or hospital environment.
Complies
Mains power quality should be that of a
typical commercial or hospital environment.
Complies
Mains power quality should be that of a
typical commercial or hospital environment.
If the user of the equipment requires
continued operation during power mains
interruptions, it is recommended that the
equipment be powered from an
uninterruptible power supply or a battery.
3A/m
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
EN 61000-4-2
Electrical fast
transient/burst
EN 61000-4-4
Surge
EN 61000-4-5
Voltage dips, short
interruptions and voltage
variations on power supply
input lines
40% Ut (60% dip in
Ut) for 5 cycles
EN 61000-4-11
70% Ut (30% dip in
Ut) for 25 cycles
EN-61000-4-8
<5% Ut (>95% dip
in Ut) for 5 sec
3A/m
NOTE: Ut is the a.c. mains voltage prior to application of the test level.
ACQ 7700 Amplifiers
Declaration Electromagnetic Emissions/Immunity  97
Guidance and manufacturer’s declaration - electromagnetic immunity
The equipment is intended for use in the electromagnetic environment specified below. The customer or the user of the
equipment should assure that it is used in such an environment.
Immunity test
IEC 60601 test level
Compliance
level
Electromagnetic environment - guidance
Portable and mobile RF communications equipment
should be used no closer to any part of the
equipment, including cables, than the recommended
separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
Conducted RF
3Vrms
EN 61000-4-6
150kHz to 80MHz
Radiated RF
3V/m
EN 61000-4-3
80MHz to 2,5GHz
3Vrms
3V/m
d [
3,5
] P
10
d [
3,5
] P
10
80MHz to 800MHz
7
d [ ] P
10
800MHz to 2,5GHz
Where P is the maximum output power rating of the
transmitter in watts (W) according to the transmitter
manufacturer and d is the distance in meters (m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey,
should be less than the compliance level in each
frequency range.
Interference may occur in the vicinity of equipment
marked with the following symbol:
NOTE 1: At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and
reflection from structures, objects, and people.
Field strengths from fixed transmitters, such as base stations for radio (cellular / cordless) telephones and land mobile
radios, amateur radio, AM and FM radio broadcast, and TV broadcast cannot be predicted theoretically with accuracy.
To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be
considered. If the measured field strength in the location in which the equipment is used exceeds the applicable RF
compliance level above, the equipment should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as re-orienting or relocating the equipment.
Over the frequency range 150kHz to 80MHz, field strengths should be less than 10V/m.
98  Declaration Electromagnetic Emissions/Immunity
ACQ 7700 Amplifiers
Sécurité
Cette information générale de sécurité est pour l'utilisateur et le personnel de service. Des
AVERTISSEMENTS et les ATTENTIONS spécifiques seront trouvés dans tout le manuel là où il est
applicable.
LIMITES ET SYMBOLES DE CE MANUEL ET SUR L'ÉQUIPEMENT
ATTENTION, ce symbole indique des paragraphes fournissant des
informations d'avertissement et détaillées au sujet d'une pièce spécifique de
l'instrument. Qu'une partie de l'équipement est également identifiée par ce
symbole (voir les références à ce symbole dans le manuel).
AVERTISSEMENT, risque de décharge électrique
C.A., courant alternative
Dactylographiez la partie appliquée par B – Commun relié à la
terre
L'Équipement de classe CF Defibrillation preuve
La terre d'Equipotentiality/chassis
EN ATTENTE (le courant passe, instrument eteint en mode
'attente')
OUTRE DE (raccordement aux forces à C.A.)
EN MARCHE (raccordement aux forces à C.A.)
Les produits de DSI/Ponemah ne sont pas "les dispositifs médicaux" prévus pour être employés pour
les buts du diagnostic de la maladie ou d'autres conditions, ou dans le traitement, la réduction, ou la
ACQ 7700 Amplifiers
Declaration Electromagnetic Emissions/Immunity  99
prévention de la maladie, ou pour être employés comme dispositif de soutien de la vie. L'utilisation
des produits de DSI/Ponemah sont seulement pour les buts de conduire la recherche de la science de
vie.
AVERTISSEMENT
SI CET INSTRUMENT EST ACTIONNÉ OU UTILISÉ de quelque sorte NON INDIQUÉ, LA
PROTECTION FOURNIE PAR LE SYSTÈME PEUT ÊTRE ALTÉRÉE. N'EMPLOYEZ PAS
EN PRÉSENCE DES ANESTHÉSIQUES INFLAMMABLES.
100  Declaration Electromagnetic Emissions/Immunity
ACQ 7700 Amplifiers
SOURCE D'ÉNERGIE
Cet instrument est prévu pour fonctionner à l'intérieur à partir d'une source d'énergie qui n'applique pas plus de
250 volts de RMS entre les conducteurs d'approvisionnement ou entre l'un ou l'autre conducteur
d'approvisionnement et la terre. Une prise de terre protectrice par le conducteur de terre dans le cable électrique
est exigée. Si l'unité est montée dans une installation permanente (c.-à-d. monté sur crémaillère), l'utilisateur
DOIT permettre d'accéder à la prise OU relier l'instrument à un circuit avec un commutateur ou un disjoncteur
accessibles à l'utilisateur. Le cable électrique détachable est le moyen par lequel les forces sont débranchées.
CORRECTEMENT RECTIFIER L'INSTRUMENT
Cet instrument est fondu par le cordon du secteur. C'est un dispositif de la classe 1. Fondre la fiabilité peut
seulement être réalisé quand l'équipement est relié à un réceptacle de catégorie d'hôpital. Utilisez seulement le
cordon et le connecteur de secteur indiqués pour votre instrument. Employez seulement un cordon de secteur
qui est en bon état.
Après la perte du raccordement du protecteur-terre, toutes les pièces conductrices accessibles (y compris des
boutons et des contrôles qui peuvent sembler être isolés) peuvent rendre une décharge électrique.
EMPLOYEZ LES FILS TEST ET LES CÂBLES APPROPRIÉS
Les fils test et/ou les câbles d'interconnexion peuvent porter des tensions de phase DANGEREUSES. Ils
doivent être examinés régulièrement pour l'usage. Des fils ou les câbles usés devraient être remplacés.
L'amplificateur a été conçu et examiné pour la protection contre les effets de la décharge d'un défibrillateur
cardiaque. Pour l'exploitation sûre, n'employez que les câbles équipés d'amplificateur.
PLACEMENT DE L'ÉLECTRODE ECG
L'utilisateur devrait s'assurer que toutes les électrodes employées, y compris l'électrode neutre, n'entrent en
contact avec aucune partie conductrice, y compris la terre.
Chaque fois qu'un défibrillateur est utilisé, assurez que les fils sont placés sur les endroits appropriés sur le
sujet. Les fils ne devraient jamais être placés sur les surfaces au sol. Vérifiez que les fils du défibrillateur ne
sont pas placés directement sur les électrodes ECG.
N'EMPLOYEZ PAS AVEC L'ÉQUIPEMENT CHIRURGICAL DE HAUTE FRÉQUENCE
Il est impératif que les électrodes d'ECG soient enlevées du sujet avant d'utiliser n'importe quel équipement
chirurgical de haute fréquence. Cet équipement ne fournit pas des moyens protecteurs contre des brûlures
quand l'équipement est utilisé avec l'équipement chirurgical de haute fréquence.
ADDITION DU COURANT DE RISQUE
L'amplificateur a été conçu et examiné pour répondre à des spécifications de fuite courantes une fois attaché au
sujet. N'importe quel matériel supplémentaire ajouté au sujet peut augmenter la fuite. L'opérateur devrait se
rendre compte de l'addition possible des courants additionnels de fuite quand le matériel supplémentaire est
relié au sujet.
UTILISATION AVEC DES STIMULATEURS
L'opérateur devrait se rendre compte de tous les interactions ou risques en matière de sécurité possibles quand
l'amplificateur est utilisé en même temps que les stimulateurs cardiaques et d'autres dispositifs de stimulant. Le
fabricant de ces dispositifs devrait être consulté pour toute information supplémentaire.
ACQ 7700 Amplifiers
Declaration Electromagnetic Emissions/Immunity  101
EMI/RFI
L'amplificateur a été examiné pour répondre à des normes de susceptibilité et de rayonnement d'EMI/RFI.
Cependant, l'utilisateur devrait se rendre compte des interactions électromagnétiques possibles entre ce
dispositif et d'autres dispositifs dans le même secteur et corriger la situation si nécessaire. N'importe quel type
de feuille conductrice mis à une terre électrique et placé entre la source et l'équipement aidera à réduire l'IEM.
AVERTISSEMENTS POUR LE PERSONNEL DE SERVICE AUTORISÉ
Les tensions dangereuses existent à plusieurs points dans cet instrument. Pour éviter des blessures, ne touchez
pas les raccordements ou les composants exposés tandis que le courant passe. Il n'y a aucun élément disponible
d'utilisateur dans les conditionneurs de signal. Renvoyez l'unité à DSI pour le calibrage et service.
UTILISEZ LE FUSIBLE APPROPRIÉ
Pour éviter le risque d'incendie, utilisez seulement un fusible du type correcte, de l'estimation de tension, et de
l'estimation courante comme indiqué dans la liste des pièces pour votre instrument.
N'UTILISEZ PAS SANS COUVERTURES ET PANNEAUX INSTALLÉS
Pour éviter des blessures et des dommages aux équipments, l'utilisateur devrait débrancher l'appareil avant
d'enlever les couvertures, les panneaux ou les attaches. Réinstallez les couvertures, les panneaux, et les attaches
avant de rebrancher l'appareil.
AVERTISSEMENT: ON NE PERMET AUCUNE MODIFICATION À CET ÉQUIPEMENT
102  Declaration Electromagnetic Emissions/Immunity
ACQ 7700 Amplifiers
Product Issue Report
Product Issue Report Form
Sales Person:
Customer Name:
Company:
Address:
Issue:
Phone Number:
Email Address:
Ponemah Version (including Service Pack):
Serial Number:
Priority:
Date:
Hardware:
Steps to Repeat
Status of issue (check one)
[] Unreproduced [] Reproduced
[] Needs repair [] As intended
Computer hardware/software
Brand/Model:
CPU Speed:
RAM:
Operating System (including Service Pack):
Networked
[] Yes
[] No
ACQ-7700 Signal Conditioners
Product Issue Report  103
Feature Request
Feature Request Form
Sales Person:
Customer Name:
Company:
Address:
Description:
Phone Number:
Email Address:
Ponemah Version (including Service Pack):
Serial Number:
Priority:
Date:
Hardware:
Feature (check one)
[] Unevaluated
[] Implement
104  Feature Request
[] Pending
[] Already Exists
ACQ 7700 Amplifiers
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