Thoth Technology Argus 2000 Owner's Manual
  1. Manuals
  2. Brands
  3. Thoth Technology Manuals
  4. Measuring Instruments
  5. Argus 2000
  6. Owner's manual

Thoth Technology Argus 2000 Owner's Manual

Ir spectrometer
Hide thumbs
Table of Contents

Advertisement

Quick Links

Document Number
OG274001
© Thoth Technology, 2018. All rights reserved. This document is proprietary and should not be disseminated
without the written consent of Thoth Technology. The information contained in this document is restricted
and may be subject to international laws governing spacecraft products and services.
Argus 2000 IR Spectrometer
Owner's Manual
Thoth Technology Inc., Algonquin Radio Observatory, Achray Road, RR6
Pembroke, Ontario K8A 6W7, Canada
Tel: +(1) (905) 713-2884. Email: space@thothx.com, www.thothx.com
Issue
Release 1.03

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Argus 2000 and is the answer not in the manual?

Questions and answers

Summary of Contents for Thoth Technology Argus 2000

  • Page 1 OG274001 Release 1.03 © Thoth Technology, 2018. All rights reserved. This document is proprietary and should not be disseminated without the written consent of Thoth Technology. The information contained in this document is restricted and may be subject to international laws governing spacecraft products and services.

  • Page 2: Table Of Contents

    Argus Status Message .................... 23     10.2 Adjusting Spectrum Pixel Range ................23     10.3 Commanding the Instrument Settings ..............23     10.4 Data Logging ......................24     Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 3 Command Format (Model 04) ................37     12.2.2 Command List Model 04 ......................40     TROUBLESHOOTING ..................43     WARRANTY ....................... 43     14.1 Disclaimer ......................44     Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 4 Page 4 of 44 Release Notes Issue Revisions Date 1.01 Draft for release. 1 December 2017 1.02 Revised, corrected and enlarged 16 March 2018 1.03 Revised 15 August 2018 Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 5: Product Key

    UAV grade Table 2: Y Letter Code Key Letter Code Description Unit only (kit excluded) Kit included Table 3: Z Letter Code Key Letter Code Description Standard range Extended range Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 6: Purpose

    Argus 2000 IR Spectrometer. 3 Scope This document provides safety guidelines, setup information, operating instructions, troubleshooting procedures and interface and technical specifications for the Argus 2000 IR Spectrometer. 4 Symbols Used The following symbols are used in this document.

  • Page 7: Important Safety Instructions

     Do not shock the instrument physically or expose this unit to liquids of any type. 7 Package Contents The Argus instrument and GSE Kit includes the items shown in Figure 1 and itemized in Table 5. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 8: Product Features

    1x256 elements that is actively cooled. Each pixel has a native radiometric resolution of 10-bits. For models with numbers 01-03 resolution may be enhanced to Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 9: Specifications

    The device operates typically in a continuous single-pixel scanning mode with approximately 100 illuminated spectral channels. Specifications The technical specifications for Argus 2000 are summarized in Table 6, below. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 10: Detector System

    Page 10 of 44 Table 6: Technical Specifications, Argus 2000 Spectrometer Argus 2000 Specification 1. Type Grating spectrometer 2. Configuration Single aperture spectrometer 3. Field of View 0.15º viewing angle around centered camera boresight with 15mm fore-optics 4. Mass ~280 g 5.
  • Page 11 Page 11 of 44 Figure 2: Detector Quantum Efficiency (1.7m device). Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 12 Page 12 of 44 Figure 3: Detector Quantum Efficiency (2.2 m device). Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 13: Optical Design

    Instruments can be ground calibrated for absolute radiance by using a calibrated light source viewed from a range of at least Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 14: Angular Sensitivity

    Argus instrument. The full-width-half-maximum is estimated at 0.15 . At a typical LEO orbital height of 600 km, this corresponds to a surface tile of length 1.57 km. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 15: Response To Collimated Monochromatic Laser Source

    Figure 7: Response to Laser Source in Counts (1.6 ms exposure to 1050 nm laser, standard Argus). Functional Design The system utilizes a microprocessor for the sequencing and processing of spectra. A functional diagram for the instrument is provided in Figure 8. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 16 Detection Interpreter Figure 8: Argus Functional Diagram (optical train shown in blue; cooler components in red, electronics in brown and software functions in green; optional secondary serial interface illustrated). Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 17: Applications

    Iron content may be inferred from the strong absorption feature in the lower wavelength region. The absorption of infrared radiation by carbonates has a distinct signature that varies with rock type, enabling classification. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 18 1000 nm - 2.4 m). In this spectral region water vapor dominates the spectra and, consequently, the radiative forcing and radiation budget. Carbon dioxide is visible and well isolated at 1.57 and Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 19 Results of spectra acquired over Canada in 2008 are shown below in Figure 11. We estimate that the peak radiance observed in this scene is equivalent to 0.04 Wm Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 20 900 nm (10 mol.cm 1.2m (10 mol.cm 1.4m (10 mol.cm Carbon Monoxide (CO) 1.63m (10 mol.cm Methane (CH 1.67m (10 mol.cm 2.25m (10 mol.cm Hydrogen Fluoride (HF) 1.265m (10 mol.cm Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 21 Page 21 of 44 Figure 11: Data Acquired (successive spectra, smoothed features) from Argus 1000 on CanX-2 platform over Ontario, Canada, December 2008. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 22: Ground System Electronics Setup

    The application comprises two windows. The left pane shows the instrument status. The right pane shows the spectra as a function of counts against frequency number. A screenshot of the GSE application is shown below. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 23: Argus Status Message

    Argus ID must be active (selected by the cursor) in order to command the instrument. Exposure time, Number of Scans, Capacitor, Temperature, Adaptive exposure and Load/Save Default settings may be programmed from the window menus. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 24: Data Logging

    1500 mA. In-rush current transients settle within 10 ms of Argus activation. 11.1.1.5 The Argus instrument casing shall be maintained at ground potential. 11.2 Communications Interface 11.2.1.1 The instrument features an asynchronous RS-232 serial port. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 25: Timing Of Spectra Acquisition And Co-Adding Feature

    Onboard Computer or listening device in fixed length unsigned 8-bit words. Data packets transmitted continuously cycle period determined (55mS+Integration_Time_Setting) * (Number_of_Scans_Setting). The packet format is shown in Table 8. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 26 22 – 534 spectral data encoded as 512-bytes in repeating unsigned MSB and LSB 8-bit words [MSB]*256 + [LSB]. Parity word computed bitwise as: ∑ (I=1...534) XOR( byte_i, byte_i+1 ) Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 27 Adaptive exposure mode lower threshold to trigger changes in integration time expressed in percent of full dynamic range. 41 - 44 Reserved. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 28: Connectors

    Table 8. 11.5 Connectors 11.5.1.1 The spacecraft shall provide all necessary external harnessing. 11.5.1.2 Connectors are located on the -Y face within the area indicated below: Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 29 Page 29 of 44 Figure 14: Argus 2000 Connector Mounting Location (top view). Figure 15: Argus 2000 Connector Mounting Location (front view). 11.5.1.3 The instrument has a bulkhead mounted Hirose DF11 type connector with 6 pins. Hirose 6-pin DF-11 are required for mating to the instrument.

  • Page 30: Mechanical Interfaces

    Port B (Option) DATA_TX1 Serial Data Transmission Port A Ground DATA_TX2 Serial Data Transmission Port B (Option) 11.6 Mechanical Interfaces 11.6.1.1 The instrument mechanical axes and dimensions are defined as follows: Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 31 Page 31 of 44 Figure 16: Argus 2000 Mechanical Axes and Dimensions 11.6.1.2 The instrument is mounted using 4-40 taped and helicoiled holes in the base of the instrument. WARNING: Mounting hardware must be sized so as to avoid exceeding the maximum thread depth of 5.0 mm.

  • Page 32: Environment

    Table 6. 11.7.1.2 Argus type-S instruments are capable of surviving a vibration load of at least 12 g rms random and sinusoidal on all axes. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 33: Operation

    The message and corresponding codes that may be received are given in Table 10. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 34 ERROR BAD PARITY "BP" ERROR INVALID PARAMETER "IP" ERROR SCAN COUNT OUT OF RANGE "SR" ERROR CAP SELECT OUT OF RANGE "CR" ERROR COOLER SELECT OUT OF RANGE "TR" Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 35: Command List

    High temperature setting, (reduced current draw by 70 mA) ‘1’ Low temperature setting, (100mA cooler current draw) 12.1.2.4 Set Number of Scans to Count Parameter: ‘s’ Setting: ‘1-9’ Number of spectra to co-add before data transmission. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 36 Setting: Threshold value in percent (%). 12.1.2.11 Set Adaptive Exposure Mode Upper Pixel Parameter: ‘e’ Setting: Pixel Number. 12.1.2.12 Set Adaptive Exposure Mode Lower Pixel Parameter: ‘b’ Setting: Pixel Number. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 37: Command Format (Model 04)

    Error Invalid command. 0x04 Error Programming default settings. 0x05 Error Loading default settings. 0x06 Error Default setting verification. 0x07 Error Integration limit exceeded. 0x08 Error LCS Invalid bandwidth capacitor. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 38 LCS sensor reset. 0x18 Command acknowledgement. 0x19 Power up. 0x1A Frame counter programmed. 0x1B Default settings programmed. 0x1C Command executed. 0x1D Zero counters. 0x1E Device ID programmed. 0x1F Parameters loaded. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 39 Auto exposure lower threshold set. 0x2C Auto Exposure upper pixel set. 0x2D Auto Exposure lower pixel set. 0x2E Reserved. 0x2F LSB dynamic range set. 0x30 LCS sensor reset. 0x31 Factory settings loaded. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 40: Command List Model 04

    32mS 4096mS Setting Capacitance (pF) 0x02 Set LCS feedback capacitor 20.0 10.0 Setting Capacitance (pF) 0x03 Set LCS bandwidth capacitor. 50.5 10.5 0x04 Set LSB dynamic range. High Sensitivity Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 41 Saves the current settings as 0x11 Save current settings as default the default settings. Defaults are loaded on power up. 0x12 Set Time and date. 0x13 Reserved. 0x14 Reserved. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.
  • Page 42 Page 42 of 44 0x15 Reserved 0x16 Reserved Enabled 0x17 Enable LCS Antiblooming mode Disabled Enabled 0x18 Enable LCS Autozero mode. Disabled 0x19 Reset LCS sensor. Resets the LCS registers. Commercial In Confidence OG274001 © Thoth Technology, 2018. All rights reserved.

  • Page 43: Troubleshooting

    Reselect from settings menu. 14 Warranty This limited warranty is provided by Thoth Technology Inc. (“the Company”) and covers product defects in your Argus IR Spectrometer. In case of delivery of faulty merchandise, especially faulty construction, defective material, or defective manufacture, the Company shall, at...

  • Page 44: Disclaimer

    Company invalidates any warranty for faulty merchandise. 14.1 Disclaimer THIS LIMITED WARRANTY IS THE SOLE AND EXCLUSIVE WARRANTY PROVIDED BY THOTH TECHNOLOGY INC. IN CONNECTION WITH THE ARGUS IR SPECTROMETER AND IS, WHERE PERMITTED BY LAW, IN LIEU OF ALL OTHER WARRANTIES,...

Table of Contents