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Related Manuals for SVC GROUP WEDI-4
Summary of Contents for SVC GROUP WEDI-4
- Page 1 Wireless External Data Interface (WEDI-4) P/N: ASM1024-600 USER MANUAL Revision 1.0 29 Firemens Way, Poughkeepsie, New York 12603 USA Voice: (845) 471-7007, Fax: (845) 471-7020, E-mail: svcinfo@spectravista.com Copyright © © © © 2019 Spectra Vista Corporation...
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Page 3: Table Of Contents
Table Of Contents INTRODUCTION ..........................1 FOR BEST RESULTS, THE WEDI-4 MAY BE MOUNTED ON A TRIPOD USING ITS BUILT-IN ¼-20 BOTTOM MOUNT, AS SHOWN BELOW....................3 CONTROLS AND INDICATORS ......................4 ..................................4 OWER WITCH LED/A ................................. 4 UDIO EEPER PAIRING WEDI-4 WITH YOUR INSTRUMENT ................ - Page 4 Figure 1 WEDI-4 Top View Showing Built-In PAR Sensor ................... 1 Figure 2 WEDI-4 Side View Showing External Sensor Inputs – Pyranometer (SPN-1), and Thermistor (T) ..1 Figure 3 Using The WEDI-4 In The Field With Various Sensors .................. 2 Figure 4 i-Series External Data Bluetooth Antenna Location ..................
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Page 5: Introduction
1 1 1 1 Introduction The SVC 4 channel Wireless External Data Interface (WEDI-4) is a companion product to the Spectra Vista i-Series of spectroradiometers. The WEDI-4 provides a platform to wirelessly inject data from the built-in Li-Cor PAR sensor, as well as data from external sensors, into the scan data acquired by the spectroradiometer. -
Page 6: Figure 3 Using The Wedi-4 In The Field With Various Sensors
Bluetooth radio, which can receive data from sensors connected to the WEDI-4. The external sensors and WEDI-4 can be placed near the area of interest as the spectroradiometer is moved from target to target. By using just the PAR Sensor (supplied with the WEDI-4) the instrument operator can be alerted to changes in downwelling irradiance and take action to avoid collecting erroneous data. -
Page 7: For Best Results, The Wedi-4 May Be Mounted On A Tripod Using Its Built-In ¼-20 Bottom Mount, As Shown Below
3 3 3 3 Figure 4 i-Series External Data Bluetooth Antenna Location For best results, the WEDI-4 may be mounted on a tripod using its built-in ¼-20 bottom mount, as shown below. Figure 5 WEDI-4 Mounted Securely To A Tripod... -
Page 8: Controls And Indicators
The unit emits a 0.5 second beep every 2 seconds, and flashes the power switch LED. When this occurs, the WEDI-4 should be turned off until it the battery can be recharged. Failure to turn off the unit under low-battery conditions will reduce the lifetime of the battery. -
Page 9: Pairing Wedi-4 With Your Instrument
5 5 5 5 Pairing WEDI-4 With Your Instrument The WEDI-4 uses a Bluetooth radio to wirelessly send sensor data to the i-Series instrument. Prior to using the WEDI-4, this Bluetooth radio must be paired with a specific i-Series instrument. This pairing process only needs to be performed once, as the i-Series instrument remembers the paired device across power cycles. -
Page 10: Figure 9 Lcd Pairing Process, Before Turning On The Wedi-4
It will also automatically select channel 1 as the current display channel. If the LCD shows any other STATUS after the above steps, then check: • That the Bluetooth Address as found on the bottom of the WEDI-4 chassis was entered correctly. •... -
Page 11: Wedi-4 Usage - Stand-Alone Mode
The main LCD screen has an area labeled “EXT” that, once an initial reference scan has been acquired, displays the percentage change in any WEDI-4 channel since the time of the last reference. Prior to the initial reference scan, the “EXT” field displays the string “REF”, indicating that no initial reference scan has been acquired yet. -
Page 12: Figure 12 Lcd Indicating Downwelling Radiance Is Currently Down 3 Percent Vs Reference
8 8 8 8 Figure 12 LCD Indicating Downwelling Radiance Is Currently Down 3 Percent vs Reference The “EXT” value on the following screen indicates that the current downwelling radiance is 10 percent greater than at the time that the reference scan was taken: Figure 13 LCD Indicating Downwelling Radiance Is Currently Up 10 Percent vs Reference When the “EXT”... -
Page 13: Wedi-4 Usage - Pc Mode
PC software’s main screen. [See below for more information]. • “Adjust Displayed Values For External Dark Current” is un-checked. Each of the WEDI-4 channels may optionally require dark-current subtraction in order to produce values that are directly proportional to their corresponding input sensor voltages. In this example, the Li- Cor PAR sensor does not require dark correction for typical usage. -
Page 14: Figure 15 Pc Software New Main Screen Buttons And External Data Display Fields
WEDI-4 and its data appears on Display Channel 1. The first step in taking advantage of the WEDI-4 in the field is, as always, to acquire a reference scan. This is done by pressing the software’s “REFERENCE SCAN” button. In this case, the “External Data Display”... -
Page 15: Figure 16 External Data Display After Reference Scan
This shows that the PAR sensor’s downwelling radiance value was 10440 units during the most recent Reference Scan. The “Last Scan” indicates that we have not yet acquired any WEDI-4 sensor data associated with a Target Scan since our last Reference Scan. -
Page 16: Wedi-4 Rechargeable Battery
GREEN when the battery is fully charged. It takes approximately 2 hours to fully charge a depleted battery. Do not turn on the WEDI-4 power while its battery is being charged. The unit should stay in the OFF state whenever the battery charger is connected. -
Page 17: Checking Battery Voltage
Table 1 Battery Voltage vs. Charge State The nominal voltage of the battery is 9.6V. The WEDI-4 will operate on voltages as low as 8.5V; however, it is recommended that the internal battery be recharged prior to each full data of use. -
Page 18: Figure 22 Battery Voltage Measurement - Across Spn-1 Connector Pins 2 And 3
Check using a Voltmeter: The voltage level of the WEDI-4 battery may be checked by turning the unit ON and placing a volt meter between pins 2 and 3 of the round SPN-1 connector located on the side of the chassis. -
Page 19: Replacing The Battery
Replacing the Battery The rechargeable NiMH battery is considered a consumable item, which will need to be replaced over time, with usage. Replacement batteries may be ordered from Spectra Vista using part number CAB1024-504. To replace the battery: • Turn OFF the unit. •... -
Page 20: Figure 24 Battery Replacement - Connector J2 "Batt" Partially Removed
Figure 24 Battery Replacement - Connector J2 "BATT" Partially Removed • Once J2 has been removed, the battery has been electrically disconnected from the unit, as shown below. Figure 25 Battery Replacement - Old Battery Prepared For Removal • The old battery is attached to the enclosure side wall with double-sided foam tape. Start the process of removing the battery by first carefully separating the old battery from the side wall of the enclosure. -
Page 21: Figure 26 Wedi-4 Battery With Foam Tape Applied
Apply double-sided foam tape to the new battery. Do not apply excessive amounts of foam tape, only apply as much as shown below: Figure 26 WEDI-4 Battery With Foam Tape Applied • Remove the protective covering on the foam tape to expose the sticky adhesion surface •... -
Page 22: Configuration Options
Configuration Options The the WEDI-4 SMB connector is normally factory configured to accept a standard NTC Thermistor as a temperature input. This input may alternately be configured to accept any sensor whose DC voltage output is within the range 0.0 to 4.0 volts. Contact the factory in order to change the thermistor input to accommodate a voltage input. -
Page 23: Specifications
Specifications Unit Size 4" long, 4" high, 2.5" deep 10.2 cm. long, 10.2 cm. high, 6.4 cm. deep Unit Weight 1.25 lbs. (0.57 kg.) Power Usage Internal battery, 9.6 VDC nominal @ 20 mA Battery 9.6V, 800mAh (7.7 Wh), Rechargeable NiMH SVC P/N CAB1024-504 Battery Run Time Approx. -
Page 24: Appendix A - Hardware Description
Signal - Ground Table 2 SPN-1 Connector Pin Assignments Note that the WEDI-4 is designed to supply power to the SPN-1 sensor only; do not attempt to power the SPN-1 internal heater from the WEDI-4 SPN-1 interface connector. SVC WIRELESS EXTERNAL DATA INTERFACE 4 CHANNEL USER MANUAL REVISION 1.0... - Page 25 WEDI-4 User Manual Document Revision Sheet Revision Section Revised By Date Revision Level 3/1/19 Initial Release SVC WIRELESS EXTERNAL DATA INTERFACE 4 CHANNEL USER MANUAL REVISION 1.0...
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