JSR Ultrasonics DPR500 User manual

DPR500 Dual Pulser-Receiver
Operator Manual
Manual Version 2.2.0
February, 2011
www.JSRUltrasonics.com
Copyright ©2006-2011 Imaginant Inc. All Rights Reserved
000001000006E

DPR500 Dual Pulser-Receiver
Table of Contents
DPR500 Dual Pulser-Receiver............................................................................. 1
Table of Contents ................................................................................................. 2
Fuse, Safety, and Technical Support Information................................................. 4
Fuse Information..................................................................................................................................................4
Safety .....................................................................................................................................................................4
Technical Support ................................................................................................................................................4
Warranty Agreement............................................................................................. 5
Instrument Limited Warranty............................................................................................................................5
Software Limited Warranty................................................................................................................................5
Application Disclaimer.........................................................................................................................................5
General Description.............................................................................................. 6
Description ............................................................................................................................................................6
Physical..................................................................................................................................................................6
Theory of Operation.............................................................................................. 7
DPR500 System Blocks and Their Functions.....................................................................................................7
JSR Control Panel Software...............................................................................................................................7
Digital Control Logic and RS-232 Interface ......................................................................................................8
High Voltage Power Supply...............................................................................................................................8
Pulser (Impedance / Energy / Damping) ...........................................................................................................8
Pulser Trigger Control........................................................................................................................................8
PRF Oscillator....................................................................................................................................................8
Receiver Amplifier/Attenuator...........................................................................................................................8
Low Pass Filters .................................................................................................................................................8
High Pass Filters.................................................................................................................................................8
Power Switch, Indicators, and Connectors........................................................... 9
Main Power Switch ............................................................................................................................................9
Power Indicator LED (Power)............................................................................................................................9
Pulse Indicator LEDs (Pulse) ............................................................................................................................9
DPR500 Rear Panel Connectors.......................................................................................................................10
CHA/CHB Remote Pulser Connector ..............................................................................................................10
CHA/CHB Receiver Output Connector (Receiver Output).............................................................................10
CHA/CHB Trig / Sync Connector....................................................................................................................10
RS-232 Interface Connectors ...........................................................................................................................11
AC Input Receptacle.........................................................................................................................................11
Instrument Setup ................................................................................................ 12
System Components ...........................................................................................................................................12
Host Computer Requirements...........................................................................................................................12
Page 2 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Ventilation...........................................................................................................................................................12
Mains Disconnect................................................................................................................................................12
Earth Ground .....................................................................................................................................................12
System Configuration.........................................................................................................................................13
Operation............................................................................................................ 14
Pulse-Echo Mode Operation..............................................................................................................................14
Transmission Mode Operation..........................................................................................................................15
Operating the DPR500.......................................................................................................................................16
Remote Operation of the DPR500...................................................................... 17
Overview of Remote Operation.........................................................................................................................17
JSR Control Panel graphical user interface.....................................................................................................18
JSR Common SDK (Software Development Kit) ............................................................................................19
JSR Simple ActiveX object................................................................................................................................20
Remote PC control via serial port commands .................................................................................................20
COM Port Configuration...................................................................................................................................20
DPR500 Service................................................................................................. 21
Serviceable Parts ................................................................................................................................................21
Fusing ..................................................................................................................................................................21
Fuse Replacement...............................................................................................................................................21
Voltage Selection.................................................................................................................................................22
Appendix A ......................................................................................................... 23
DPR500 Specifications....................................................................................... 23
Pulser...................................................................................................................................................................23
Receiver...............................................................................................................................................................23
PC or Compatible Control Computer..............................................................................................................24
Environmental Conditions.................................................................................................................................24
Miscellaneous......................................................................................................................................................24
Appendix B ......................................................................................................... 25
Pulser-Receiver Configuration File Specification................................................ 25
Introduction........................................................................................................................................................25
Configuration File Overview.............................................................................................................................25
Example Configuration Files.............................................................................................................................27
General Configuration File Arrangement........................................................................................................28
Page 3 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Fuse, Safety, and Technical Support Information
Fuse Information
The DPR500 utilizes .4A 250V 3AG-type slow-blow glass-cartridge fuses.
Warning: Fire Hazard. Replace fuses only with fuses of the same type and rating.
Warning: Shock hazard. Disconnect electric power before replacing fuses. Follow Fuse Replacement
procedure found in Section 8 of this manual.
Safety
There are no user serviceable parts in the DPR500, other than the fuse.
DPR500 units should be returned to the manufacturer for any repair.
If the DPR500 is not used as prescribed by the manufacturer, the overall
safety may be impaired.
Ensure that the power cord is appropriate before connecting the DPR500 to
mains power. Use a power cord rated for the mains voltage, preferably a
power cord supplied by the equipment manufacturer or authorized agent.
Technical Support
The answers to most questions regarding the use of the equipment are contained in this manual. Please use this as
your first source of information. If you cannot find an answer in this manual, please contact technical support at
Imaginant.
Imaginant Inc.
3800 Monroe Ave.
Pittsford, NY 14534
Voice: [phone]
Fax: [phone]
E-mail: [email protected]
Please have the following information available before contacting Technical Support:
Model number (i.e.: RP-H2) and Serial number (i.e.: GF0101)
Specific nature of the problem
Technical support is available Monday through Friday from 8:00AM to 5:00PM EST.
Page 4 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Warranty Agreement
Instrument Limited Warranty
Imaginant Inc. warrants that its instruments will be free from defects in materials and workmanship for a
period of one year from the date of purchase. IMAGINANT will, at its option, repair or replace any of its
products, which prove to be defective during the warranty period without charge for parts and labor.
To obtain service under this warranty, the Customer must obtain a Return Material Authorization (RMA)
number from IMAGINANT before shipping the product to Imaginant with the shipping charges prepaid.
The Customer is responsible for packaging the product, preferably in the original packaging materials.
This warranty does not apply to any defect, failure, or damage caused by improper usage, handling, care,
or tampering. Neither will this warranty apply to any equipment damaged from attempts by personnel
other than Imaginant to repair or modify the product.
Imaginant disclaims any warranty, either express or implied, as to the applicability or fitness of its
hardware or software for a particular purpose or application. Imaginant will not be liable for any indirect,
incidental, or consequential damages related to the use of its’ products irrespective of whether Imaginant
received any advance notice of the possibility of such damages.
Software Limited Warranty
Imaginant Inc. warrants for a period of 120 days from the date of delivery, that its instrument software
will perform under normal usage and without unauthorized modification substantially in accordance with
the specifications published in the documentation and those set forth in Imaginant advertising material;
that, under normal use, the media upon which this program is recorded is not defective; and that the user
documentation is substantially complete and contains the information Imaginant deems necessary for
using its software. If, during the 120 day warranty period, a demonstrable defect in the program or
documentation should appear, Imaginant will repair or replace the software with functionally equivalent
software within 30 days after Imaginant has been notified of such a defect.
Imaginant disclaims any warranty, either express or implied, as to the applicability or fitness of its
software for a particular purpose or application. Imaginant will not be liable for any indirect, incidental,
or consequential damages related to the use of its products irrespective of whether Imaginant received any
advance notice of the possibility of such damages.
Application Disclaimer
This product is not intended or designed for use in medical or other devices or systems where malfunction
of this product can reasonably be expected to result in personal injury. Imaginant customers using or
selling this product for use in such applications do so at their own risk and agree to fully indemnify
Imaginant against any damages resulting from such improper use or sale.
Page 5 Imaginant Inc.

DPR500 Dual Pulser-Receiver
General Description
Description
The DPR500 Dual Pulser-Receiver is a modular instrument consisting of two Pulser-Receiver systems in
one unit. It is designed to operate under the control of a computer. A software program is provided which
allows the user to exercise all instrument functions under the control of a PC or compatible computer.
Alternatively, programming information supplied in this manual allows the user to develop custom
software programs that control the DPR500.
In a typical application, the DPR500 produces a high voltage electrical excitation pulse on the remote
pulser’s ECHO connector. Two discrete pulse energy levels are available for adjusting the strength of
this excitation pulse. The type of pulser chosen determines the shape of the pulse. An ultrasonic
transducer is connected to the ECHO connector via a short length of 50Ωcoaxial cable, and the
transducer converts energy from the electrical excitation pulse into an ultrasonic pulse that is propagated
into a test material or medium. Four discrete damping levels in the DPR500 allow the transducer response
to be fine-tuned.
With the DPR500 configured for pulse-echo mode of operation, any acoustic echoes reflected from
interfaces or from defects within the test material are converted by the transducer into electrical signals to
be processed by the DPR500 receiver. These electrical signals are amplified by the preamp in the pulser
and then subsequently amplified by the low noise receiver. The signals pass through adjustable high pass
and low pass filters and an adjustable gain stage. The DPR500 receiver gain range, bandwidth and filter
values are dependant on the type of receiver purchased. The amplified and filtered signals are available on
the instrument’s Receiver Output connector.
The DPR500 may also be used in transmission mode operation wherein a separate receiving transducer is
used to detect acoustic pulses that have propagated through the test material or medium. This second
transducer is connected to the DPR500 remote pulser THROUGH connector, and the received signals are
processed as described above for pulse-echo mode operation.
The DPR500 also allows external equipment such as A/D digitizer boards or oscilloscopes to be
synchronized to the pulser operation. To facilitate this, a narrow pulse is output on the synchronization
(Trig/Sync.) connector simultaneously with generation of the excitation pulse when the instrument is
configured in Internal Trigger Mode.
Physical
The DPR500 ultrasonic dual Pulser-Receiver system consists of an enclosure with dimensions 12” deep,
8.25” wide, and 3.5” high. This enclosure contains the receiver(s), power supplies and controls for the
pulser(s). The pulsers range in size from 2” x 3” x 1.2” to 2” x 3” x 1.52”.
Page 6 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Theory of Operation
DPR500 System Blocks and Their Functions
The DPR500 dual Pulser-Receiver is composed of the functional blocks shown in the figure below. The
main unit includes the digital control logic and RS-232 interface, high voltage power supply(s), pulser
trigger select, PRF oscillator, receiver amplifier(s), receiver low pass filters, and receiver high pass filters.
The remote pulser(s) includes the pulser, echo/through select and a pre-amplifier. Instrument control
software resides in the remote computer and controls the instrument via the RS-232 serial interface.
DPR500 System Block Diagram
Receiver A
Receiver B
High Voltage
Power Supply
High Voltage
Power Supply
Amplifier/
Attenuator
Amplifier/
Attenuator
Low Pass
Filter
Low Pass
Filter
High Pass
Filter
High Pass
Filter
PRF
Oscillator
Digital
Control
Logic
RS232
Interface
Bus
Amplifier
Through
Echo
Pulser
(Energy and
Damping)
Pulser B
Pulser A
Amplifier
Echo-
Through
Select
Echo
Through
Pulser
(Energy and
Damping)
Channel B
Receiver Output
50 Ohms
Channel A
Receiver Output
50 Ohms
CHA
TRIG/SYNC
CHB
TRIG/SYNC
Echo-
Through
Select
JSR Control Panel Software
Software enables a user to remotely control the DPR500 from a computer. In addition to the
control program provided with the DPR500, information is provided in this manual for users that
wish to develop custom instrument control programs.
Page 7 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Digital Control Logic and RS-232 Interface
The interface and control logic enables the control of the DPR500 from software running on the
host computer. Communication is via an RS-232 interface such as the COM1 or COM2 ports on
the remote computer.
High Voltage Power Supply
The precision regulated high voltage supply provides power to the pulser. The DPR500 pulser
maintains constant pulse amplitude regardless of changes in either the pulse repetition rate or
other instrument controls.
Pulser (Impedance / Energy / Damping)
The pulser generates an excitation pulse upon receipt of a trigger event from a selected source.
Pulse energy can be controlled by the Energy control. There may be multiple energy values
depending on the type of remote pulser selected. The damping control allows the damping
impedance at the pulser output to be set to discrete values allowed by the remote pulser.
Pulser Trigger Control
This control selects between the internal PRF oscillator or an external source applied to the
Trig/Sync connector as trigger sources for the DPR500 remote pulser.
PRF Oscillator
Generates repetitive trigger pulses for the remote pulser.
Receiver Amplifier/Attenuator
Controls the amplification or attenuation of signals processed by the DPR500 receiver. The
receiver gain is dependent on the type of receiver chosen.
Low Pass Filters
These filters are available for reducing the bandwidth of the DPR500 receiver. Bandwidth
limiting can be used to improve the signal to noise ratio for applications that do not require the
full receiver bandwidth.
High Pass Filters
These filters are available for eliminating undesirable low frequency energy from the DPR500
receiver signal. High pass filtering can be used as a means of providing faster receiver recovery
from strong signals such as the excitation pulse or strong interface echoes.
Page 8 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Power Switch, Indicators, and Connectors
In this section, the DPR500 Dual Pulser-Receiver controls, indicators, and connectors are described. The diagram
below shows the locations of the DPR500 front panel power switch and indicators.
CH A
PULSEPOWER
CH B
PULSE
DPR500 Front Panel
Power
Indicator
LED CHB Pulse
Indicator LED
CHA Pulse
Indicator LED
Main Power
Switch
Main Power Switch
This toggle switch is used for turning on/off power to the DPR500.
Power Indicator LED (Power)
This amber-colored LED illuminates to indicate that power is applied to the DPR500. This LED can also
be made to blink at a controlled rate by the ‘Blink’ command described in Section 7.
Pulse Indicator LEDs (Pulse)
These are red LED indicators that illuminate when their respective pulsers are firing.
Page 9 Imaginant Inc.

DPR500 Dual Pulser-Receiver
DPR500 Rear Panel Connectors
The diagram below shows the positions of the connectors on the DPR500 rear panel.
DPR500 Rear Panel Connectors
CHA/CHB Remote Pulser Connector
These modular connectors supply power, digital control, high voltage and a 50Ωreturn path for signals.
CHA/CHB Receiver Output Connector (Receiver Output)
These are SMB receptacles on which output signals from the DPR500 receiver are available. This output
signal line should be terminated with a 50Ωload.
CHA/CHB Trig / Sync Connector
This connector provides a positive polarity sync pulse signal that can be used to trigger an oscilloscope or
other signal monitoring/recording instrument when the DPR500 internal oscillator is used to trigger the
pulser. In this mode, the signal line should be terminated with a 50Ωload.
If the DPR500 pulser is in external trigger mode, then the Trig / Sync connector is used for receiving a
positive-going 3-5 V external trigger pulse. Triggering will occur on the rising edge of the trigger pulse.
When triggering the DPR500 pulser from an external source or under software control, it is important to
ensure that the pulse repetition frequency does not exceed the maximum PRF rate of the chosen pulser.
Page 10 Imaginant Inc.

DPR500 Dual Pulser-Receiver
RS-232 Interface Connectors
An RS-232 serial interface port on the control computer is connected to the Input RJ45 receptacle using
the eight-conductor reversing RJ45 cable and the DB-9 to RJ45 adapter supplied with the DPR500.
When control of other DPR500 instruments is desired, they may be added in a daisy-chain fashion by
connecting a reversing RJ45 cable from the RS-232 Output connector on one instrument to the RS-232
Input connector of the next instrument.
AC Input Receptacle
This is a standard power receptacle with voltage selector switch and fuses. Available voltage settings are
100VAC, 120VAC, 220VAC, and 240VAC. Note that the fuse value for 100/120VAC is the same as the
fuse value for 220/240VAC. Refer to section 8 for instructions on changing the voltage selection.
Page 11 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Instrument Setup
System Components
The following items should be present in your shipment:
- DPR500 Dual Pulser-Receiver Unit
- DB-9 to RJ45 Adapter
- RJ45 Serial Interface Cable
- Power Cord
- CD Rom containing DPR500 software control program, DPR500 Instruction Manual, text
files and LabVIEW .vi drivers.
- Interface extension cable and a pair of panel mount locking tabs (one per receiver)
- Voltage selector wheel
- Any remote pulsers that were ordered (one working cable and one transducer cable per
remote pulser)
Host Computer Requirements
A PC or compatible computer with an available COM1, COM2 or RS-232 serial port can control the
DPR500.
Ventilation
To help maintain adequate instrument cooling, the cooling vents in the rear of the DPR500 should not be
blocked.
Mains Disconnect
The power cord is the mains disconnect device. Position the DPR500 so that the instrument can easily be
disconnected from the main power supply when needed.
Earth Ground
Earth ground is connected to the instrument through the power cord.
Page 12 Imaginant Inc.

DPR500 Dual Pulser-Receiver
System Configuration
1. Locate the power receptacle on the rear of the DPR500. The receptacle has a small window through
which the main supply voltage selection is displayed. If the displayed voltage is not correct, then the
voltage selection must be changed. See Section 8 on how to change the voltage selection.
2. Plug the DB-9 to RJ45 adapter into the COM1, COM2, or RS-232 serial port on the computer that
will be used to control the DPR500.
3. Plug one end of the RJ45 serial interface cable into the DB-9 to RJ45 adapter. Plug the other end into
the DPR500 rear connector labeled RS-232 Input.
4. Plug the power cord into the power receptacle on the rear of the DPR500, and plug the other end into
a power outlet of the correct voltage. If the power cord that was supplied with the instrument is not
available, then a power cord that is rated to 40 W must be used.
5. Plug the Interface extension cable into channel A and/or channel B receiver.
6. Connect the extension cable into the working cable supplied with the remote pulser. If mounting of
the interface cable is desired, panel mount locking clips are provided. Contact Imaginant for more
information on dimensions of cutouts.
7. Connect the pulser to the working cable.
8. Turn on power to the DPR500 with the front panel power switch.
9. Install the JSR Control Panel application from the provided CD ROM.
10. Run the control program.
Page 13 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Operation
Pulse-Echo Mode Operation
In the pulse-echo mode of operation, a single transducer is used for both pulse transmission and echo
receiving. To configure the DPR500 for pulse-echo operation, the transmit/receive transducer is
connected to the Remote Pulser connector labeled ECHO, typically via of a 50Ωcoaxial cable.
The DPR500 pulse-echo mode configuration is shown in the following figure.
Pulse-Echo Mode Operation
Page 14 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Transmission Mode Operation
For transmission mode operation, separate transmitting and receiving transducers are employed. The
transmitting transducer is connected to the DPR500 ECHO connector and the receiving transducer is
connected to the THROUGH SMB connector.
The DPR500 transmission mode configuration is shown below.
Transmission Mode Operation
Page 15 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Operating the DPR500
The following sequence of steps describes a typical operating session with the DPR500. The DPR500
should be connected to a control computer, and the control software should be installed on the computer
as explained in Section 4 of this manual.
1. Connect a transmit/receive transducer, or separate transmit and receive transducers to the DPR500 as
explained above. For contact applications, use a suitable acoustic couplant between the transducer(s)
and the sample that is to be tested.
2. Connect the DPR500 SMB connector labeled Receiver Output to the input of an oscilloscope or
waveform digitizer. The monitoring oscilloscope or digitizer should have a 50Ωinput impedance. If
the input has high impedance, then a shunt 50Ωterminator should be added to the input.
3. Using the control software program on the computer, initialize the DPR500 by following the address
assignment procedure described in Section 7.
4. Set the pulse trigger control to INT if the DPR500 pulser is to be triggered by the internal PRF
oscillator, and connect the DPR500 Trig/Sync connector to the external trigger input of the
monitoring oscilloscope. If the DPR500 pulser is to be triggered from an external source such as the
Sync signal of a waveform digitizer, then set the pulse trigger control to EXT and connect both the
DPR500 Trig/Sync connector and the external trigger input of the oscilloscope to the source of the
external trigger signal. The coaxial cable from the trigger source may be connected to high
impedance loads such as the trigger input of the oscilloscope, but the final connection should be to the
DPR500 Trig/Sync connector. The input impedance of the DPR500 Trig/Sync connector is 50Ωthat
serves to properly terminate the coaxial cable.
5. Using the control software, the instrument may be configured for the desired operation. The red Pulse
indicator located on the DPR500 front panel should illuminate when the pulser is firing. Once the
pulser is firing, the pulse repetition frequency (PRF) should be adjusted so that all echoes from any
previous excitation pulses have subsided before a new excitation pulse is generated.
6. Adjust the gain control to obtain a signal level between ± .2 and ± .5 V peak into 50Ωat the
RECEIVER OUTPUT connector.
7. Adjust the high and low pass filter cutoff frequencies as necessary. High pass filters can be used to
speed amplifier recovery from the main excitation pulse or large interface echoes. For the low pass
filter, the cutoff frequency can be reduced in order to improve the signal to noise ratio in low
frequency applications.
Page 16 Imaginant Inc.

DPR500 Dual Pulser-Receiver
Remote Operation of the DPR500
Overview of Remote Operation
Communication between the control computer and DPR500 is via an RS-232 interface using the COM1
or other RS-232 serial port on a control computer. Commands are issued by the control computer and
consist of a sequence of bytes transmitted via the RS-232 interface to the DPR500.
A DPR500 can optionally be connected to the control computer with a USB to RS-232 dongle, with the
RS-232 side connected to the DPR500 and the USB side connected to the control computer. The software
on the PC will work with either a hardware COM port or a USB to RS-232 dongle configured as a virtual
COM port. The software will also work with a combination of both hardware COM ports and USB
dongles if more than one instrument is connected.
Multiple DPR500 instruments may be connected in a daisy-chain fashion to one serial port on the control
computer. A command sent by the computer will be received by all instruments in the daisy chain, and
acted upon by only the addressed instrument(s). If a DPR500 in the daisy chain is turned off, it will not
impede communication between the computer and other instruments. Up to 255 instruments may be
connected to one serial port. All instruments may be controlled independently through the assignment of
individual addresses. DPR500 instruments can be daisy-chained with DPR300’s.
Alternatively, each DPR500 could be connected to its own COM port on the control computer.
Imaginant provides several levels of software for remote PC control, described below.
Page 17 Imaginant Inc.

DPR500 Dual Pulser-Receiver
JSR Control Panel graphical user interface
JSR Control Panel is a Windows-based application that allows the user to control any number and mix of
DPR500, DPR300, and PRC50 instruments.
Features of JSR Control Panel software
• Automatically performs daisy-chain or multiple COM port connection
• Configurations of settings can be named, saved, and restored
• Displays allowed ranges of settings in physical units
• Displays and controls current settings
• Query button allows refresh of all values from front panel changes
• Controls any number and mix of DPR500, DPR300, or PRC50 instruments
• Operates on 32 and 64-bit versions of Windows XP, Windows Vista, or Windows 7 systems.
• Can operate in simulate mode to test before purchasing an instrument.
Page 18 Imaginant Inc.

DPR500 Dual Pulser-Receiver
JSR Common SDK (Software Development Kit)
The JSR Common SDK provides the tools for a programmer to write application-level programs to
control DPR500, DPR300, and PRC50 instruments without having to learn the intricacies of the
command protocol, features, or control ranges of the instruments.
The JSR Common SDK consists of:
A set of DLL’s
32 and 64-bit drivers and files specific to the PRC50 (Windows XP, Windows Vista, Windows 7)
Header files
Sample source code and projects
JSR Common SDK Programmer’s Reference Manual
JSR Common SDK Properties Reference Manual
Features of the JSR Common SDK
• The same DLL’s are used by JSR Control Panel, ensuring compatibility
• Controls any number and mix of DPR500, DPR300, or PRC50 instruments
• Baseline controls for all 3 instruments are the same. E.g volts, PRF, damping, etc.
• Extended controls are provided for features unique to a specific model
• Automatically performs daisy-chain or multiple COM port connection
• Allows control and display of settings in physical units
• Range-checks all commands, providing descriptive error messages
• Error messages can be numeric or text strings
• Can operate in simulate mode to allow code development before purchasing an instrument.
• Operates on Windows 2000, Windows XP, Windows Vista, or Windows 7 systems.
• Application code can be in C or C++.
Page 19 Imaginant Inc.

DPR500 Dual Pulser-Receiver
JSR Simple ActiveX object
The JSR Simple ActiveX object is a thin layer of software that can be used between your application code
and the JSR Common DLL. It therefore implements the same functionality as the JSR Common DLL ,
but has a more modern interface that is easier to use.
Features of the JSR Simple ActiveX object
• Application code can be written in any of several languages:
Visual Basic
C# (C Sharp)
C++
• Use of ActiveX properties makes coding simpler and easier to read:
For example
MyPulser.PRF = 2500;
VoltsToDisplay = MyPulser.Volts;
Remote PC control via serial port commands
When the DPR500 was first introduced, the JSR Common SDK and JSR Simple ActiveX object did not
exist. Application developers had to work with the lowest level serial port protocol, which was
complicated and dedicated to the DPR500 only.
Documentation of that protocol is not included in this newer manual in order to encourage developers to
use either of the two modern interfaces described above.
If you wish to have a copy of the manual that describes the serial port protocol, please write to
[email protected].
COM Port Configuration
The RS-232 serial port on the control computer should be configured to 4800 baud with 1 start bit, 8 data
bits, one stop bit, no parity, and no flow control. An adapter is supplied to convert the DB-9 serial port
connector on a PC to an RJ45 receptacle. An RJ45 reversing eight-conductor cable is then used to
connect from the serial port to the RS-232 input connector on the DPR500. The pin assignment of the
DPR500 rear panel RS-232 interface connectors is shown below.
Pin Input Output
1 RXD TXD
INPUT OUTPUT
4 Gnd Gnd
5 Gnd Gnd
8 TXD RXD
2,3,6,7 No connection
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Page 20 Imaginant Inc.