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Phoenix Geophysics MTU-TXC, Руководство пользователя

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4

Chapter 1

Introduction to the MTU-TXC

4

Table 1-1: Transmission Codes and Resulting Waveforms

Domain

Ratio

ON:OFF

Duty 

Cycle

Waveform

Code

Time

1:1

50%

bipolar

TD50

Time

1:2

33.33%

bipolar

TD33

Time

1:3

25%

bipolar

TD25

 = Aligned with 2000/01/01 00:00:00 UTC.

1 : 1 : 1 : 1

1 :  2 :1 : 2

1 : 3  : 1 : 3

Содержание MTU-TXC

Страница 1: ...MTU TXC Current Source Controller User Guide Version 1 February 2004 PHOENIX GEOPHYSICS...

Страница 2: ......

Страница 3: ...MTU TXC Current Source Controller User GuideVersionj Feb...

Страница 4: ...any form or by any means electronic or mechanical including photocopying recording or information storage and retrieval system without permission in writing from the publisher Address requests for pe...

Страница 5: ...connectors 11 Connecting a PC 12 Connecting the GPS antenna 13 Grounding the MTU TXC 14 Protecting the CompactFlash card slot 14 Connecting the battery 15 Connecting to a current source or receiver 1...

Страница 6: ...ii ii...

Страница 7: ...ce Controller output is adjustable for both frequency domain FD and time domain TD techniques This chapter tells you how to make connections to the MTU TXC and current sources receivers and a PC creat...

Страница 8: ...digits when specifying a frequency The MTU TXC will produce the closest approximation possible About phase For synchronization with other Phoenix GPS equipped instruments the output phase is such tha...

Страница 9: ...the schedule Each schedule file can contain up to 100 entries specifying the waveform the frequency and the schedule You can create these files in any spreadsheet or text processing program that can...

Страница 10: ...4 Table 1 1 Transmission Codes and Resulting Waveforms Domain Ratio ON OFF Duty Cycle Waveform Code Time 1 1 50 bipolar TD50 Time 1 2 33 33 bipolar TD33 Time 1 3 25 bipolar TD25 Aligned with 2000 01...

Страница 11: ...10 8 55 55 bipolar FD9 Time 1 1 50 unipolar positive TD50P Time 1 2 33 33 unipolar positive TP33P Table 1 1 Transmission Codes and Resulting Waveforms continued Domain Ratio ON OFF Duty Cycle Wavefor...

Страница 12: ...1 1 50 unipolar negative TD50N Time 1 2 33 33 unipolar negative TD33N Time 1 3 25 unipolar negative TD25N Table 1 1 Transmission Codes and Resulting Waveforms continued Domain Ratio ON OFF Duty Cycle...

Страница 13: ...Phoenix Raw Parameter Table Interface program communicates with the MTU TXC via a special cable part number 6218 and adapter part number 6228 connected to the PC s parallel port The parallel port mus...

Страница 14: ...e command key is one of the Function keys or the Insert or Delete key Many computers when they are powered on will display a prompt that names the command key 2 Follow the instructions just given to d...

Страница 15: ...indows detected the port repeat the procedure on page 7 to determine the parallel port configuration To add an ECP port manually 1 Create the ECP port in CMOS Setup as just described 2 When Windows fi...

Страница 16: ...your computer to see the new properties If the new properties do not appear even after a restart you may have to upgrade the BIOS of the PC in order to use the Phoenix software 8 Examine the Conflict...

Страница 17: ...al techniques This section explains how to connect the GPS antenna the battery and a PC to the MTU TXC Handling locking ring connectors The PC and current source or receiver connections are made with...

Страница 18: ...ush the locking ring toward the connection and turn the ring counterclockwise To keep connectors clean 1 When a connection is made always join the two loose protective caps and lock them to each other...

Страница 19: ...ts for quick connection to the MTU TXC and one with threads for connection to the antenna To connect the GPS antenna 1 Screw the threaded connector of the antenna cable to the underside of the antenna...

Страница 20: ...ng any other connections To ground the MTU TXC 1 If necessary remove 2 2 5cm of insulation from the end of a grounding wire and twist the strands tightly together 2 Unscrew the GND terminal on the MTU...

Страница 21: ...re shipped with the cable unattached Note Make all other connections and always a ground connection before connecting a battery to the MTU TXC To connect a BTU type battery 1 Examine the battery termi...

Страница 22: ...Gauge is visible through the vinyl window Fig 1 5 Li ion battery LED Fuel Gauge 2 Plug the cable into the battery mini jack Fig 1 6 Li ion battery cable connections 3 Fit the other end of the cable t...

Страница 23: ...MAG INPUT connector of the MTU TXC and the EXTERNAL DRIVE connector of the current source Figure 1 7 T 3 external drive cable For example to connect to the T 3 current source use the external drive c...

Страница 24: ...UTC and supply a timing drive the MTU TXC must receive signals from at least four GPS satellites Under normal conditions this takes less than 10min A longer delay may indicate poor antenna positionin...

Страница 25: ...onvert the files to binary format and transfer them to the MTU TXC Finally when the MTU TXC is running use the Phoenix Raw Parameter Table Interface to choose which schedule to activate Creating a fre...

Страница 26: ......

Страница 27: ...File menu in Excel choose Save As In the Save as type box select CSV Comma delimited csv 11 Make a note to yourself of the details of the schedule contained in the file When you activate a schedule l...

Страница 28: ...uts created by the installation and the folder where you stored the CSV file 2 Drag the CSV file onto Generate Frequency Stepping Table The Generate Frequency Stepping Table window appears displaying...

Страница 29: ...source or receiver as described earlier 4 Connect a battery as described earlier 5 Power up the MTU TXC by pressing the POWER switch ON and releasing it 6 Watch the LED on top of the MTU TXC and wait...

Страница 30: ...he file s 5 Click Open The files will appear in the Data files list of the MTU File Utilities dialog box 6 Close the dialog box and exit WinHost Activating a schedule To activate a schedule 1 With the...

Страница 31: ...very low frequencies this delay could be 20 min or more Saving settings If you want the MTU TXC to use the same schedule next time it is powered on you will need to save the settings Otherwise when th...

Страница 32: ...6 2 Watch the red LED indicator and wait approximately 20s until it goes out It is now safe to remove the battery connection Warning Do not disconnect the battery from the MTU TXC while it is powered...

Страница 33: ...ing battery 15 PC 12 connections order of 15 creating a frequency schedule file 19 CSV files 19 D Device Manager Windows 7 digits significant in auto modes 2 E ECP printer port 7 Excel 19 Extended Cap...

Страница 34: ...ing to binary format 22 creating 19 examining 22 naming 21 transferring 23 Setup exe 7 shutting down the MTU TXC 25 signal 921 6 kHz 2 significant digits in auto modes 2 software PC 7 SPP Standard Par...

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