Ludlum Measurements 3078i Manual
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Ludlum Measurements 3078i Manual

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Model 3078 and 3078i Stretch Scope
Ludlum Measurements
August 2023
Serial Number: 25022487 and Succeeding
Firmware: F.4.1.1208 and Higher

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Summary of Contents for Ludlum Measurements 3078i

  • Page 1 Model 3078 and 3078i Stretch Scope Ludlum Measurements August 2023 Serial Number: 25022487 and Succeeding Firmware: F.4.1.1208 and Higher...
  • Page 3 Model 3078 and 3078i Stretch Scope Ludlum Measurements August 2023 Serial Number: 25022487 and Succeeding Firmware: F.4.1.1208 and Higher...
  • Page 5 STATEMENT OF WARRANTY Ludlum Measurements, Inc. warrants the products covered in this manual to be free of de- fects due to workmanship, material, and design for a period of twelve months from the date of delivery. The calibration of a product is warranted to be within its specified accuracy lim- its at the time of shipment.

  • Page 7: Table Of Contents

    ONTENTS Contents List of Figures List of Tables 1 Introduction 2 Getting Started Unpacking and Repacking ....... 13 Battery Installation .
  • Page 8 A.4 Settings ......... . 90 Ludlum Measurements, Inc.
  • Page 9 CONTENTS A.4.1 AuxComm Setting - Mode ......90 A.4.2 AuxComm Setting - Off Time ......91 A.4.3 AuxComm Setting - Pwr Mode .

  • Page 11: List Of Figures

    IST OF IGURES Startup Display (All Segments Shown) ......14 Hardware Revision Levels ........14 Firmware Version Display .

  • Page 13: List Of Tables

    IST OF ABLES COUNT Mode Units and Result ......29 Features That Affect Units in All Modes ......74 12.1 Standard Parts List .

  • Page 15: Introduction

    fields of radioactivity. The Model 3078i version has all the features of the Model 3078 plus the addition of an internal detector for tracking user exposure rate or dose, but both instruments will hereafter be referred to as “Model 3078."...
  • Page 16 "find" something. They can simply listen for multiple beeps. Setup of the instrument is accomplished through the front-panel buttons, or through Lumic 2.0 software available from Ludlum Measurements. Front-panel setup can be disabled via the internal switch on the Model 3078 in order to pro- tect settings from inadvertent changes.

  • Page 17: Getting Started

    ETTING TARTED 2.1 Unpacking and Repacking Remove the calibration certificate and place it in a secure location. Remove the instrument and ensure that all of the items listed on the packing list are in the carton. Check individual item serial numbers and ensure calibration certificates match between instruments and de- tectors (if applicable).

  • Page 18: Turning The Instrument On

    Figure 2.2: Hardware Revision Levels Beginning with firmware version F.3.2, the tick marks below the hardware revision level de- fine the board generation, which will help with future firmware updates. Once F.3.2 is in- Ludlum Measurements, Inc.

  • Page 19: Firmware Version Display

    2.3. TURNING THE INSTRUMENT ON stalled, the user will no longer have to open the instrument to determine which version of the main processor board was used in the instrument. Instead, use the following table to determine which main processor board is installed in the instrument: •...

  • Page 20: Instrument Diagnostics

    This is a com- mon occurrence after installing new batteries into the instrument after an extended period without batteries (typically greater than 15 minutes). Ludlum Measurements, Inc.

  • Page 21: Definitions

    2.4. INSTRUMENT DIAGNOSTICS Figure 2.6: Instrument Date Reset (Audio Alarm) To acknowledge this condition, a short press of the ACK/RST button will silence the alarm, clear the screen, and resume normal instrument operation. A ’FAULT’ message will remain on the screen as a reminder until the instrument power is cycled. Time and date are necessary when the instrument is configured for datalogging as each log record is time/date stamped.

  • Page 22: Calibration Due

    A reference reading (or readings) with a dedicated check source should be obtained with the detector(s) in a constant and re- producible manner at the time of calibration or at the time the instrument is received in the field. Ludlum Measurements, Inc.

  • Page 23: Detector Failure Diagnostic

    2.6. DETECTOR FAILURE DIAGNOSTIC If at any time the instrument fails to read within 20% of the reference reading when using the dedicated check source, it should be removed from service and sent to a calibration fa- cility for recalibration and/or repair. If desired, multiple readings may be taken at different distances and/or with different sources so that other scales are checked.

  • Page 24: Detector Over Range

    OVERLOAD and ALARM icons, three dashes will be displayed in place of the numerical values, and an alarm tone will sound. Once the detector current goes below the threshold, the Model 3078 will return to normal operation. Ludlum Measurements, Inc.

  • Page 25: Instrument Use And Controls

    2.7. INSTRUMENT USE AND CONTROLS Figure 2.12: Detector Overload Alarm (Display Will Flash) 2.7 Instrument Use And Controls With four front-panel buttons and three handle buttons (as seen in front-panel drawing in front of manual), the Ludlum Model 3078 offers many features in a small package. Each button may be pressed and held for a predetermined length of time, signified by instrument beeps, to access unique instrument features.

  • Page 26: Units Button

    Long Press (press and release after two beeps): • Currently has no effect. Extra-Long Press (press and release after three beeps): • Enables/disables the Auxiliary Communications as indicated by a wifi symbol on the top of the LCD screen. Figure 2.13: WiFi Symbol Ludlum Measurements, Inc.

  • Page 27: Detector Button

    2.7. INSTRUMENT USE AND CONTROLS 2.7.3 DETECTOR Button: The Detector button’s primary function is to switch between available enabled detectors. Short Press (press and release after one beep): • Used to select the active detector, as evidenced by the corresponding LO, HI, or AUTO LED.

  • Page 28: Ack/Rst Button

    • In COUNT mode, it will: – If COUNT mode is ready: Initiate a count. Upon completion, the result will be logged if datalogging is enabled. – If COUNT mode is in progress: Button has no effect. Ludlum Measurements, Inc.

  • Page 29: Prg Button

    2.7. INSTRUMENT USE AND CONTROLS – If COUNT mode is complete: Button will log the current result. • In DOSE mode, it will log the current DOSE value if datalogging is enabled. • If datalogging in Mode 2 and a log event has been initiated, the button is used to accept the current location ID.

  • Page 30: Rate Mode Operation

    The word MAX will be displayed when in MAX mode. A short press of the UNITS button will switch the displayed value between the Primary and Secondary Units. If the detector is configured for alpha/beta, the UNITS button will switch Ludlum Measurements, Inc.

  • Page 31: Count Mode Operation

    2.10. COUNT MODE OPERATION between alpha and beta. A combination of alpha and beta (ex. alpha + beta) can be viewed if Unit 3 is enabled for the detector. A short press of the ON/AUD button will cycle through the “click” audio volume levels. When Sigma Audio is enabled, a short press of the ON/AUD will toggle the Sigma Audio volume levels.
  • Page 32 Similarly, if count units of Bq or dpm are chosen, the resulting answer is an averaged disintegration rate. Ludlum Measurements, Inc.
  • Page 33 2.10. COUNT MODE OPERATION If the user desires the instrument to show results in terms of disintegra- tions/area (eg. dpm/100 cm ), then the instrument should be configured for dpm and the appropriate factor should be placed in the Efficiency parameter. Bq/cm will use the stored detector active area and perform the calculations internally so no manipulation of the efficiency is needed.
  • Page 34 To clear the alarm condition and reset the Count Timer, an extra-long press of the ACK/RST button is required. • If other operational modes are available, a short press of the MODE button will move to the next available operational mode. Ludlum Measurements, Inc.

  • Page 35: Dose Mode Operation

    2.11. DOSE MODE OPERATION Figure 2.16: COUNT Mode Displaying COUNT Timer of 5 Minutes, 30 Seconds Figure 2.17: COUNT Mode Displaying COUNT Timer of 100k Seconds When using COUNT mode on the Model 3078 i internal detector, it is possible for an internal detector integrated dose alarm to occur.

  • Page 36: Dose Mode Operation Display

    A short press of the LOG button, if datalogging is enabled, will log the currently displayed DOSE value. The maximum displayable value, regardless of units, is 999 M. Figure 2.18: DOSE Mode Operation Display Ludlum Measurements, Inc.

  • Page 37: Specifications

    PECIFICATIONS External Detector: two energy-compensated GM tubes Internal Detector (If installed): one energy-compensated GM tube Energy Response of Energy-Compensated GM Tubes: within 25% of true value from 60 keV to 3 MeV (see note) Linearity: readings within 10% of true value LCD Display: three-digit LCD with bar graph, 13 units, five multipliers, two mode icons, three alarm levels, and four fault messages, as well as USB, wireless, audio, and low-battery icons...
  • Page 38 • UNITS – changes the units between count rate, dose/exposure, or disintegration • DETECTOR – short press to switch active scope detector or enable auto ranging, extra-long press to switch between internal/external detector (Model 3078i only) • LAMP/MODE – short press alternates between available modes: RATE (count rate), MAX (captures peak rate), COUNT (user-selectable preset count time from 0 to approximately 31.68 years), and DOSE, extra-long press to enable/disable scope lamp...
  • Page 39 Temperature Range: -20 to 50 °C (-5 to 122 °F), may be certified for operation from -40 to 65 °C (-40 to 150 °F) Environmental Rating: NEMA (National Electrical Manufacturers Association) rating of 3x or IP (Ingress Protection) rating of 53 Size: retracted: 20 x 11.4 x 125.1 cm (7.9 x 4.5 x 49.25 in.) (H x W x L) extended: 20 x 11.4 x 466.7 cm (7.9 x 4.5 x 18.75 in.) (H x W x L) Weight: 2.3 kg (5.4 lb)

  • Page 41: Setup Mode

    4.1 Setup Overview Your instrument has been shipped from Ludlum Measurements only after passing electronic checkout, a 24-hour burn-in process, and a careful calibration process. Calibration papers are supplied with each instrument shipped from Ludlum Measurements.

  • Page 42: Setup Parameters

    Dead Time Correction 2 Mantissa Dead Time Correction 2 Exponent Detector Current 100 m Overload Threshold Detector Adjustable 1 (second) Scaler Count Detector Active Area Channel 1 – Threshold 0.035 Channel 1 - Window (V) 0 (max value) Ludlum Measurements, Inc.
  • Page 43 4.2. SETUP PARAMETERS High Internal Setting Setup Parameter Detector Detector Detector Channel 1 - Efficiency Channel 1 - Loss of 60 (Seconds) Count Alarm Time Channel 1 - Radiation (Gamma) Icon Unit 1 - RATE / MAX Units and Minimum 00.0 mR/h 800 mR/h 00.0 mR/h...

  • Page 44: Entering Setup Mode

    SETUP PROTECT: The Model 3078 parameters can be protected from unauthorized changes via the internal switch located on the Model 3078 circuit board. To change the switch, open the battery compartment and remove the batteries from the Model 3078. Next, loosen the Ludlum Measurements, Inc.

  • Page 45: Backlight/Setup Protect Dipswitch

    4.3. ENTERING SETUP MODE six pan-head screws that fasten the bottom cover. Gently remove the bottom cover of the instrument. The DIP (dual in-line position) switch should now be visible in the center of the circuit board. With the instrument positioned as indicated in the picture, slide dipswitch 2 towards the instrument handle.

  • Page 46: Setup Mode Operation

    When you get to a parameter that you want to change, short press the LOG button. The display will begin flashing. This indicates the parameter can be changed. Use the PRG or ACK/RST buttons to make the change. If numbers are displayed on the parameter, the PRG Ludlum Measurements, Inc.

  • Page 47: Model 3078 List Of Parameters (In Order)

    4.5. MODEL 3078 LIST OF PARAMETERS (IN ORDER) button will increment the numbers and ACK/RST will decrement the numbers. Otherwise, the PRG and ACK/RST button will cycle through the available settings. When you have ad- justed the parameter setting to your desired number or setting, extra-long press the LOG button.
  • Page 48 • High Voltage Setpoint • Calibration Constant Mantissa • Calibration Constant Exponent • Dead Time Correction 1 • Dead Time Correction 2 Mantissa • Dead Time Correction 2 Exponent • Detector Current Overload Threshold • Detector Adjustable Scaler Count Time Ludlum Measurements, Inc.
  • Page 49 4.5. MODEL 3078 LIST OF PARAMETERS (IN ORDER) • Detector Active Area Page 5 - CH_1 • Channel 1 - Threshold • Channel 1 - Window • Channel 1 - Efficiency • Channel 1 - Loss of Count Alarm Time •...

  • Page 50: Device

    Use the PRG and ACK/RST buttons to scroll through the available parameter options. Backlight Threshold - Upon entry into the Backlight Threshold, the parameter will be se- lected (flashing) indicating the state of the parameter. • off (backlight off) • lo (backlight low) Ludlum Measurements, Inc.
  • Page 51 4.6. PAGE 1 - DEVICE • hi (backlight high) • aut (backlight auto adjusts to light conditions) Use the PRG and ACK/RST buttons to scroll through the available parameter options. Auto Shutdown Time - Upon entry into Auto Shutdown Time, the parameter will be selected (flashing).
  • Page 52 Use the PRG and ACK/RST buttons to scroll through the parameter options. Real Time Clock Minute - Upon entry into Real Time Clock Minute, the parameter will be selected (flashing). • 00 - 59 (minutes of the hour) Ludlum Measurements, Inc.

  • Page 53: Datalogging

    4.7. PAGE 2 - DATALOGGING Use the PRG and ACK/RST buttons to scroll through the parameter options. Real Time Clock Second - Upon selection of Real Time Clock Seconds, the seconds displayed on the LCD will continue to increment. Upon entry into Real Time Clock Seconds, the pa- rameter will be frozen as well as selected (flashing).

  • Page 54: Configuration

    Operation Modes - Upon entry into Operation Modes, the parameter will be selected (flash- ing) indicating the state of the parameter. A picture of the LCD is below. Figure 4.3: Detector Operation Modes Each mode is represented on the LCD screen as follows: • r - rate mode Ludlum Measurements, Inc.
  • Page 55 4.8. PAGE 3 - CONFIGURATION • c - count mode (scaler) • MAX - MAX mode • INTG - integrated dose mode (only enabled for internal detectors by default) Use the PRG and ACK/RST buttons to scroll through the available parameter options while noting that at least one operational mode must be enabled for each active detector.

  • Page 56: Calibration

    DETECTOR to select the detector that needs the parameter adjusted. To begin, short press LOG to begin modifying the parameter chosen. Finally, extra-long pressing the LOG button will complete the modification. High Voltage - Upon entry into High Voltage, one of the following parameters will be selected (flashing). Ludlum Measurements, Inc.
  • Page 57 4.9. PAGE 4 - CALIBRATION • Ones Place (0-9) • Tens Place (0-9) • Hundreds Place (0-9) • /k Multiplier with all digits flashing (on/off) Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options.
  • Page 58 Performing a short press of the MODE button again will return to the set point value. Detector Adjustable Scaler Count Time - Upon entry into Detector Adjustable Scaler Count Time, one of the following parameters will be selected (flashing). • Rightmost Digit (0-9) Ludlum Measurements, Inc.

  • Page 59: Channel 1

    4.10. PAGE 5 - CHANNEL 1 • Middle Digit (0-9) • Leftmost digit (0-9) • <>/k/M Multiplier with all digits flashing (adjustable from xxx to xxx M) Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options.
  • Page 60 Channel 1 - Icon - Upon entry into Channel 1 Icon, one of the following parameters will be selected (flashing). • – Alpha icon • – Beta icon • – Gamma icon • n - Neutron icon Ludlum Measurements, Inc.

  • Page 61: Unit 1

    4.11. PAGE 6 - UNIT 1 • • • • , , & • • • , , & n • • , , & n • , , & n • , , , & n • 0FF – No icon Use the PRG and ACK/RST buttons to scroll through the available parameter options.
  • Page 62 Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options. Unit 1 - RATE/MAX Alarm 3 - Upon entry into Unit 1 RATE/MAX Alarm 3, one of the following parameters will be selected (flashing). Ludlum Measurements, Inc.
  • Page 63 4.11. PAGE 6 - UNIT 1 • Rightmost Digit (0-9) • Middle Digit (0-9) • Leftmost Digit (0-9) • Multiplier with all digits flashing (adjustable from x.xx to xxx M depending on unit selected) Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options.
  • Page 64 Unit 1 - DOSE Alarm 1 - Upon entry into Unit 1 Dose Alarm 1, one of the following parame- ters will be selected (flashing). • Rightmost Digit (0-9) • Middle Digit (0-9) • Leftmost Digit (0-9) • Multiplier with all digits flashing (adjustable from x.xx to xxx M depending on unit selected) Ludlum Measurements, Inc.
  • Page 65 4.11. PAGE 6 - UNIT 1 Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options. Unit 1 - DOSE Alarm 2 - Upon entry into Unit 1 Dose Alarm 2, one of the following parame- ters will be selected (flashing).

  • Page 66: Unit 2

    Unit 2 - RATE/MAX Alarm 1 - Upon entry into Unit 2 RATE/MAX Alarm 1, one of the following parameters will be selected (flashing). • Rightmost Digit (0-9) • Middle Digit (0-9) • Leftmost Digit (0-9) Ludlum Measurements, Inc.
  • Page 67 4.12. PAGE 7 - UNIT 2 • Multiplier with all digits flashing (adjustable from x.xx to xxx M depending on unit selected) Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options. Unit 2 - RATE/MAX Alarm 2 - Upon entry into Unit 2 RATE/MAX Alarm 2, one of the following parameters will be selected (flashing).
  • Page 68 Unit 2 - COUNT Alarm 3 - Upon entry into Unit 2 Count Alarm 3, one of the following pa- rameters will be selected (flashing). • Rightmost Digit (0-9) • Middle Digit (0-9) • Leftmost Digit (0-9) • Multiplier with all digits flashing (adjustable from x.xx to xxx M depending on unit selected) Ludlum Measurements, Inc.
  • Page 69 4.12. PAGE 7 - UNIT 2 Use the LOG button to select the appropriate parameter, and use the PRG and ACK/RST buttons to scroll through the parameter options. Unit 2 - DOSE Units and Minimum Display - Upon entry into Unit 2 RATE/MAX Units Max- imum Display, one of the following parameters will be selected (flashing).

  • Page 70: Reset (Warning!!!)

    This reset is password protected, and the password will only be provided by the factory should it be required. Ludlum Measurements, Inc.

  • Page 71: Datalogging

    ATALOGGING The datalogging feature of the Model 3078, accessible through the use of the optional Lumic Datalogger software kit, allows the user to log radiation readings with the use of a handle- mounted LOG button. Data can be logged in any of the Model 3078’s operational modes (RATE, MAX, and COUNT).

  • Page 72: Datalogging Operation - Mode 2

    – For a continuous Scaler count (Scaler time is 0), the LOG button is enabled at all times. • The LCD display will show a possible Location ID Table index for the user. The index will be auto-incremented from the previously used index. Ludlum Measurements, Inc.

  • Page 73: Datalogging Operation - Mode 3

    5.3. DATALOGGING OPERATION – MODE 3 Figure 5.2: Displaying Datalog Location ID Table Index of 36 • The number will be blinking, indicating a changeable value. The user may then enter the preferred Location ID Table index by a short press of the PRG (to increment the value) or ACK/RST (to decrement the value) buttons as in Setup mode.

  • Page 74: Format

    • Mode (1 Byte) • Detector Number (1 Byte) • Status (1 Byte) • Reserved (2 Bytes) • Elapsed Count Time in seconds (4 Bytes) • Scaler Count Time in seconds (4 Bytes) • Location ID (32 Bytes) Ludlum Measurements, Inc.

  • Page 75: Software

    OFTWARE 6.1 Connecting to Lumic 2.0 Calibration/Configuration Software The Lumic 2.0 Calibration/Configuration software is sent with a standard two-meter cable. (A five-meter cable can be provided if requested. However, any cable longer than two meters may have issues with some USB hubs and computers, typically laptops.) To connect an instrument to the computer, please connect one end of the USB cable to the instrument first, and then the other end to the computer.

  • Page 77: Advanced Features

    DVANCED EATURES 7.1 Dead Time Correction All pulse counting detectors have a “dead time” in which the detector is unable to register another event. In relatively low fields this is not an issue. However, as the field strength approaches the high end of the detector’s range, dead time causes the pulse rate to become non-linear with respect to the real radiation field.

  • Page 78: R To Sv Conversion

    (due to board rework, etc.) the hardware correction settings are available in Lumic 2 Calibration software on the DevCal tab. 7.6 Other Device Data The following parameters on the instrument allow recording import device information within the device: Ludlum Measurements, Inc.

  • Page 79: Battery Life

    7.7. BATTERY LIFE Firmware Version: This is a read-only presentation of the firmware version. With a firmware version of F.x.y.zzzz, the F.x.y will show up on the device screen during the power-on sequence and signifies the released version. Device – Model Name: This should match the model name on the front face of the instrument.

  • Page 81: Safety Considerations

    AFETY ONSIDERATIONS 8.1 Environmental Conditions for Normal Use Indoor or outdoor use (While rain resistant, user is cautioned to avoid getting water through detector opening.) No maximum altitude Temperature range of -20 to 50 °C (-5 to 122 °F), may be certified for operation from -40 to 65 °C (-40 to 150 °F) Maximum relative humidity of less than 95% (non-condensing) Pollution Degree 3 (as defined by IEC 664): (Occurs when conductive pollution or dry...

  • Page 82: Cleaning And Maintenance Precautions

    Observe the following precautions when cleaning or performing maintenance on the instru- ment: • Turn the instrument OFF and remove the batteries. • Allow the instrument to sit for one minute before cleaning the exterior or accessing any internal components for maintenance. Ludlum Measurements, Inc.

  • Page 83: Revision History

    Over Max. In Chapter 3, Specifications, changed explanation of Zero Protection. Also added "plus 3 seconds" to ON/AUD, added "for Model 3078i only" for Detector, and changed 0 to 115.625 days to 0 to approximately 31.68 years under LAMP/MODE - all under User Controls.
  • Page 84 August 2023: In Chapter 2 Corrected ACK/RST button operation in COUNT Mode when Count Timer is ready. To avoid confusion, replaced Instrument Calibration Section 7.5 with Hardware Correction in the Advanced Features section of the manual and provided a more detailed description. Ludlum Measurements, Inc.

  • Page 85: Recycling

    To this end, Ludlum Measurements, Inc. strives to supply the consumer of its goods with information regarding reuse and recycling of the many different types of materials used in its products.

  • Page 87: Options

    It allows administrators to adjust device datalogging parameters. Headphone Option (part # 4498-555): This provides the Model 3000 series of instruments with a jack and circuitry required for a standard headphone plug. Ludlum Measurements also offers mono/stereo headphones with volume control.

  • Page 89: Standard Parts List

    TANDARD ARTS Part Description Part Number Model 3078 Stretch Scope 48-4332 Model 3078i Stretch Scope with Internal Detector 48-4337 Model 3003 Main Board 5519-812 LCD 82 mm x 61.64 mm 7519-186 Unimorph with Harness 8498-542-01 Model 3078 Bezel Assembly 4272-677...

  • Page 91: A Auxiliary Communications

    UXILIARY OMMUNICATIONS A.1 AuxComm Overview AuxComm, short for Auxiliary Communications, is a feature included on certain Ludlum in- struments. An AuxComm port allows the instrument to expand its capabilities with a variety of external devices through a standard serial interface. A.2 Requirements In order to take advantage of the AuxComm functionality, you will need the following: •...

  • Page 92: Auxcomm Usage - Pairing

    4. Use 2-second Enable hot key to turn on WiFi. 5. Select “Scan” in App/Software. 6. When instrument is found by mobile device, select device in list and then “Pair.” 7. Enter PIN in App/Software from Step 2. Ludlum Measurements, Inc.
  • Page 93 A.3. USAGE Figure A.1: Example – Device Selection Figure A.2: Example – Pairing In Lumic Linker App (iOS) Figure A.3: Example – Model 3000 series Figure A.4: Example – Entering PIN In Found in Lumic Linker App (iOS) Lumic Linker App (iOS) August 2023...

  • Page 94: Settings

    Raw Count: Mode that automatically transmits raw, uncorrected counts. The count interval is based on the AuxComm Auto Mode Interval variable (see A.4.6). The output value is the cumulative counts that occurred in the previous interval on all enabled channels. Ludlum Measurements, Inc.

  • Page 95: Auxcomm Setting - Off Time

    A.4. SETTINGS CPM: Mode that automatically transmits the CPM (counts per minute) for the external de- tector no matter what detector or mode is currently being displayed. The count interval is based on the AuxComm Auto Mode Interval variable (see A.4.6). Display: Mode that automatically transmits the numeric value as well as units prefix, units, and units suffix for the currently displayed screen.

  • Page 96: Auxcomm Setting - Encryption

    This setting controls the number of seconds for each transmitted value in automatic stream modes. The table below shows valid settings. Table A.6: AuxComm Auto Mode Interval Setting Description As fast as possible (1/4 second on Model 3000 series) 1-255 n-Seconds Ludlum Measurements, Inc.

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