RITEC RPR-4000 Operation Manual
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RITEC RPR-4000 Operation Manual

Pulser-receiver
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RPR-4000
PULSER-RECEIVER
Operations Manual
RITEC, Inc.
www.ritecinc.com
REV. 8-21

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Summary of Contents for RITEC RPR-4000

  • Page 1 RPR-4000 PULSER-RECEIVER Operations Manual RITEC, Inc. www.ritecinc.com REV. 8-21...

  • Page 2: Warranty, Certification, Model Number Info

    For full warranty and disclaimer statement, see the Appendix C of this manual. Service For warranty service or repair return the product only to Ritec or an authorized Ritec representative. A list of Ritec representatives is available at our website: http://www.ritecinc.com/index.php/contact-us...

  • Page 3: Table Of Contents

    RPR-4000 Operations manual Table of Contents WARRANTY, CERTIFICATION, MODEL NUMBER INFO ........2 Table of Contents ............................3 Safety ................................5 Preparation for Use ............................7 Specifications ..............................8 INTRODUCTION ..................14 Feature overview ............................14 Front panel overview ........................... 15 Rear panel overview ............................
  • Page 4 RPR-4000 Operations manual Amplifier Mode Over Duty Cycle ......................45 Replacing the HV Fuse ..........................46 Replacing the Line Fuse ..........................47 Routine Maintenance ..........................48 Routine Maintenance ..........................48 APPENDICES ..................... 49 Caution for Transducers ........................49 Power Supply Output Connector ..................... 50 Warranty and Disclaimer Statement ....................

  • Page 5: Safety

    RPR-4000 Operations manual Safety Symbols The table below shows the symbols that you may see on the RPR-4000 instrument. Please consult the manual regarding any connection on the RPR-4000 marked with either a warning symbol or a caution symbol. Symbol Description A WARNING symbol denotes a hazard.
  • Page 6 Replace fuses with only that exact style and rating as listed on the rear panel Keep liquids at a safe distance from the RPR-4000 which has an IP rating of 20 Do not use product in any manner inconsistent with manufacturer’s specifications.

  • Page 7: Preparation For Use

    35kg. The RPR-4000 is cooled by drawing air in via the vented bottom panel and pushed out via the fans on the rear panel. The RPR-4000 has feet on the bottom of the instrument which keep the instrument approximately 15mm above the surface it is placed on. Placing the instrument on a soft surface such as carpet is not recommended as this will reduce the airflow to the bottom of the instrument and may cause overheating.

  • Page 8: Specifications

    ............0.3% to 10% depending on model. Trigger Sources ..............Internal rep. rate generator External Remote trigger via RS-232 interface Internal Clamping Diplexer ...........RPR-4000 & RPR-4000HD models only Bias Level Control ..............0 to 4.99V RF Gain Control ..............0 to 4.99V Tracking Control ..............0 to 100 ‡...
  • Page 9 RPR-4000 Operations manual Receiver Multiplexed Receiver Inputs ..........2 ea. Frequency Range (LF model) ..........50 kHz to 20MHz Frequency Range (HF model) ..........200 kHz to 20MHz Frequency Range (VHF model) ..........200 kHz to 95MHz Nominal Input Impedance (both inputs) ........50 Ω...
  • Page 10 RPR-4000 Operations manual Dimensions ................19” x 5” x 17” (483 mm x 127mm x 432mm) Shipping Weight ..............45 pounds (21 kg) Auxiliary Power Connector -12V @ 100 mA ..............pin 1 +12V @ 100 mA ..............pin 3 Ground ...................pin 2 Front panel connections Input Number 1 ..............Receiver input number 1...
  • Page 11 RPR-4000 Operations manual Voltages as high as 2850 Vpp can be present at this point during normal operation. Only connect appropriately rated transducers and accessories to this point. REV 8-21...
  • Page 12 ) when operating with a low VSR 50 Ω load. load Custom frequency ranges are available – please contact RITEC for details. Used for pulse-echo operation. For systems without internal diplexers, an external diplexer accessory suitable for your application may be available – please contact RITEC for details.
  • Page 13 RPR-4000 Operations manual Safe Operating Area for Standard Power -8KW units The shaded grey area in this figure represents the safe operating area for a standard power (8 kW) model RPR-4000. REV 8-21...

  • Page 14: Introduction

    Operations manual 1 Introduction This section provides an overview of the main features of the RPR-4000, including a full description of all of the inputs and outputs available on the front and rear panels of the instrument. Procedures to help the first time user to get started with the instrument are also included.

  • Page 15: Front Panel Overview

    RPR-4000 Operations manual Front panel overview High voltage control area Enable / Disable switch rocker switch turns the high voltage power supply on. When the high voltage power supply is enabled, the blue LED will be lit. Broadband receiver area This area contains the inputs and output of the broadband receiver module.

  • Page 16: Rear Panel Overview

    RPR-4000 Operations manual RF pulse monitor This is a monitor signal output. The voltage present at this point is 40 dB less (a factor of 100) than the voltage present on the High power RF pulse output. Connect this to an oscilloscope with a 50 Ω...
  • Page 17 RPR-4000 Operations manual RF gate monitor / Amp gate monitor / Synth monitor These are monitor signals that are usually only used for troubleshooting and system verification. CW input Only used in Amplifier Mode – input connector for the RF signal to be amplified.

  • Page 18: Getting Started

    -An RT-150, which is a 150 Ω high power termination that is often supplied with the RPR-4000 system. Connect a coaxial cable from “Trigger Out” on the rear panel of the RPR-4000 to the external trigger input on the oscilloscope.
  • Page 19 View the “RF Pulse Monitor” signal on the oscilloscope. You should see a burst with a center frequency of 1 MHz and 5 μs wide. The amplitude will depend upon your RPR-4000 model and the load impedance, but should be in the range of 100 V to 500 V peak to peak.
  • Page 20 If a low impedance transducer (e.g., an electromagnetic acoustic transducer) is used, then 150 ohm load is not required. Connect a coaxial cable from “Trigger Out” on the rear panel of the RPR-4000 to the external trigger input on the oscilloscope.
  • Page 21 Adjust the output level (CONTROL, menu page 2) Please note that some piezo-electric transducers will not tolerate the very large pulse outputs available from the RPR-4000. The maximum output available is dependent upon your particular model and can be in excess of 2500 Volts peak to peak;...
  • Page 22 RPR-4000 Operations manual For optimal linearity and performance, the gain of the receiver should be adjusted such that the output level is 1 V peak to peak when terminated into 50 Ω. Please note that only the feature(s) of interest in the received signal should be in the range.
  • Page 23 When the unit power is restored the LED should be off, if not, remove power long enough to allow additional cooling. NOTE: If RPR-4000 frequency setting is set to 00.000000Hz and no external gate is applied for a period of time (approximately 20 minutes) the displayed peak detector voltage will gradually drift to a level which will result in an Over Voltage condition and will be indicated by a beeping sound and message on the front panel display.

  • Page 24: System Operation

    Menu key for selecting 1 of 5 menu pages. A view of the keypad display is shown in Figure 2.1. Figure 2.1: The keypad display console for manually controlling the RPR-4000. Navigating the menu Parameters for the pulser-receiver are stored in 5 pages.
  • Page 25 RPR-4000 Operations manual NOTE If a change has been entered into a data field without pressing the ENTER key the next menu page cannot be accessed. This prevents the operator from continuing without completing an entry. Changing alpha parameters Data fields containing alpha information may be changed by first selecting the data field with the ENTER key and then selecting the desired setting using the UP ARROW key only.
  • Page 26 RPR-4000 Operations manual Position Select: Data may be entered by first selecting a position within the data field using the LEFT and RIGHT ARROW keys. The position selected may then be set to the desired setting by pressing the UP ARROW (increase) or DOWN ARROW (decrease) keys.

  • Page 27: Pulser Settings (1/2)

    1 cycle pulse of RF depends upon your model of RPR-4000 and the load that you are driving. If the setting entered exceeds 1% duty cycle, the pulse width will be limited to the maximum number of cycles while maintaining 1% duty cycle.

  • Page 28: Pulser Settings (2/2)

    RPR-4000 Operations manual Page 2 – Pulser settings (2/2) Label Parameter Data range Units Data type TRACK Control Y, N Alpha Tracking CONTROL Level Control 0 to 100 Numeric control RF control 0 to 4.99 Numeric voltage BIAS Bias 0 to 4.99...
  • Page 29 The controls RF and BIAS allow the user to make adjustments to the gain and class of operation (A, AB, B etc.) of the gated amplifier. For guidance on using these controls contact RITEC. Burst Peak Voltage BURST PEAK VOLT Displays the burst peak voltage.

  • Page 30: Receiver Settings

    RPR-4000 Operations manual Page 3 – Receiver settings Label Parameter Data range Units Data type INPUT Receiver input 1,2, or A alpha channel GAIN Receiver gain 20.0 to 99.9 numeric LP FILTER Low pass filter 8 values alpha HP FILTER...

  • Page 31: Trigger Settings

    ‘TRIGGER OUTPUT’ on the rear panel of the unit. EXT: The unit is triggered by an external trigger generator provided by the user. is provided on the rear panel of the RPR-4000. This must be a TTL compatible signal.
  • Page 32 RPR-4000 Operations manual Repetition rate Table 3.2 lists the different repetition rates provided. If a setting other than those listed is entered the unit will select and display the closest setting below the entered value (e.g., an entry of 390 Hz will result in a repetition rate of 250 Hz.) If a rep.

  • Page 33: Program Settings

    RPR-4000 Operations manual Page 5 – Program settings Label Parameter Data range Data type SAVE PROG. AS # Slot to save settings in 0 to 9 numeric SAVE Save command Y, N alpha LOAD PROG. AS # Slot to load settings from...
  • Page 34 RPR-4000 Operations manual To load previously saved settings Enter the desired program number in the field “LOAD PROG. #:’ and press enter. Set the ‘LOAD’ setting to Y and press ENTER The bottom line of the display should flash ‘PROGRAM LOADED’. After this, the LOAD field will change itself back to N.

  • Page 35: Remote Programming

    The connector on the rear panel labeled “REMOTE COMM. RS-232” is a standard DB-9 female connector. Table 3.2 gives the required connections for the communication cable. Table 3.2: Wiring diagram for the communications cable between the RPR-4000 and the control system. Computer / controller (DTE)
  • Page 36 Figure 3.2: Example serial output of the RPR-4000 after being powered on. External commands or text files can be sent to the RPR-4000 using a variety of terminal programs. The screen shot shown in Fig. 3.2 was taken from the program called HyperTerminal.

  • Page 37: Command Reference

    RPR-4000 Operations manual Command Reference Syntax All commands are case sensitive and end with a carriage return, which is indicated by the string ‘<CR>’ in this manual. Commands with a variable data range will only function correctly when the correct number of characters is sent.
  • Page 38 RPR-4000 Operations manual Receiver commands Parameter Command Data range Units Query Echo Input IN:x<CR> 1,2, A IN:?<CR> IN:x<CR> select Receiver GA:xx.x<CR> 20.0 to 99.9 dB GA:?<CR> GA:xx.x<CR> gain High pass HF:n<CR> 1,2,3,4,5,6, HF:?<CR> HF:<hpf-id><CR> filter 7, or 8 Low pass LF:n<CR>...
  • Page 39 RPR-4000 Operations manual Operating modes and keypad management Parameter Command Query Echo Query mode MO:?<CR> ‘UPDATE MODE’ ‘PASSTHRU MODE’ Set to UPDATE UP:<CR> ‘UPDATE MODE’ followed by mode all settings Set to PS:<CR> ‘PASSTHRU MODE’ <CR> PASSTHROUGH mode Lock local KL:<CR>...

  • Page 40: Control Modes

    More information on these operating modes is presented below. Update Mode This is the default mode of operation for the RPR-4000 system. The main control module accepts commands from either the local keypad or the remote RS-232 interface. The main control module interprets the commands, updates the local display, and then sends the appropriate commands to either the pulser or receiver module.
  • Page 41 The maximum number of commands per second in Passthrough Mode is 50. Sending multiple commands A sequence of commands can be sent to the RPR-4000 by transferring a text file via the serial port. The file must be a text file only.

  • Page 42: Troubleshooting & Maintenance

    RPR-4000 Operations manual 4 Troubleshooting & Maintenance This section contains information to help the operator troubleshoot the instrument and interpret its error messages. Some limited information on maintenance of the instrument is also provided. Control Module Error Messages These messages are displayed on the local keypad display and echoed to the serial communications port.
  • Page 43 Cycling the AC power may reset this condition. If this condition continues to appear, do not use the unit and contact RITEC or your authorized representative. ‘O.T. DEC DUTY CYCLE’ The High Voltage power supply is in an over-temperature condition, the HV power has been turned off and the alarm turned on.
  • Page 44 RPR-4000 Operations manual ‘O.V. RESET CONTROL’ An over voltage event has occurred on the RF pulser output. The burst voltage level has exceeded the programmed limit. The burst voltage was automatically decreased. The operator must re-enter the CONTROL setting. The audio alarm will be turned off when the CONTROL setting is within acceptable limits.

  • Page 45: Front Panel Lcd Corruption

    Amplifier Mode Over Duty Cycle The problem When using the RPR-4000 in external amplifier mode, the pulse output is no longer present, and the RED LED on the rear panel is lit. Required action An over duty cycle event has occurred. When using the pulser is amplifier mode, it is very important that you stay within the duty cycle limits of your instrument.

  • Page 46: Replacing The Hv Fuse

    RPR-4000 Operations manual Replacing the HV Fuse The problem No high power RF pulse output; when the high voltage power supply is enabled (front panel rocker switch) the high voltage fuse holder (rear panel) glows orange. Required action The high voltage power supply fuse must be changed.

  • Page 47: Replacing The Line Fuse

    It is strongly recommended that that user determine if the instrument settings were responsible for the fuse blow event. The RPR-4000 has an auto switching AC mains input. Acceptable inputs are 95-125VAC ±5% and 195-250VAC ±5% at 300VA. Always connect the RPR-4000 to a properly grounded source using the supplied line cord.

  • Page 48: Routine Maintenance

    Operations manual Routine Maintenance There are no user serviceable parts inside the instrument. Please contact RITEC or an authorized representative for service. Cleaning the instrument The instrument enclosure can be cleaned by using a damp cloth with mild detergent. The cloth should be damp but not dripping.

  • Page 49: Appendices

    Exercise care when using the RPR-4000 with transducers, especially for the first time. The high voltage and high duty cycle available from the RPR-4000 may make it necessary to use modified or custom transducers. Experience has shown that transducers with built in resonating inductors are most prone to failure because of either overheating of the inductor or voltage breakdown.

  • Page 50: Power Supply Output Connector

    Ritec power peripheral will be set up to work properly with your instrument and be supplied with the proper peripheral power cord. In the case of the RPR-4000 the proper peripheral power cord will be a three pin male to seven pin female cord.

  • Page 51: Warranty And Disclaimer Statement

    Any recommendations made by RITEC for use of its products are based upon tests believed to be reliable, but RITEC makes no warranty of the results to be obtained. This warranty is in lieu of all other warranties, expressed or implied, and no representative or person is authorized to represent or assume for RITEC any liability in conjunction with the sale of our products other than set forth herein.

This manual is also suitable for:

Rpr-4000-hpRpr-4000-vhpRpr-4000-hd

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