Elcon EL-31, Construction, Operational And Functional Description

Page: 2 / 29

Page 2 / 29 April 7, 2019, ©
Elcon
, Switzerland EL-31_V2.1b_en.docx
Table of Contents:
1 Introduction ..................................................................................................................................... 3
2 Assembly of the display module ..................................................................................................... 3
2.1 Parts lists ................................................................................................................................ 5
2.2 Step by Step assembly and testing of printed circuit boards ................................................. 6
2.2.1 Assembling the pcb ............................................................................................................ 6
2.2.2 Initial testing of the board ................................................................................................... 7
2.3 Start-up and adjustments ....................................................................................................... 7
2.3.1 Adjustment of the voltage measurement circuit ................................................................. 8
2.3.2 Adjustment of the frequency measurement circuit............................................................. 8
2.4 Conversion of the FT-301D .................................................................................................. 10
2.4.1 Removal of the old display board from the FT-301D ....................................................... 10
2.4.2 Installation of the new display board in the FT-301D ...................................................... 11
3 Operation and functions ................................................................................................................ 14
3.1 Display .................................................................................................................................. 14
3.2 Communication with the display module .............................................................................. 14
3.3 Menu structure ..................................................................................................................... 15
3.4 Modes ................................................................................................................................... 17
3.4.1 Frequency Display ........................................................................................................... 17
3.4.2 Band modifications (band switch positions 160m, 15m or AUX) ..................................... 18
3.4.3 Transverter operation (band switch positions 10A to 10D) .............................................. 20
3.4.4 Transverter and status signaling ...................................................................................... 20
3.4.5 Voltage Display ................................................................................................................ 21
3.4.6 Morse readout of frequency ............................................................................................. 21
3.4.7 Morse readout of voltage ................................................................................................. 22
4 Software Update ........................................................................................................................... 23
4.1.1 Installing the USB-updater software on the PC ............................................................... 23
4.1.2 Installing the USB driver software .................................................................................... 23
4.1.3 Transferring the software updates in the EL-31............................................................... 25
5 Appendix ....................................................................................................................................... 26
5.1 Specifications ....................................................................................................................... 26
5.2 Rulers ................................................................................................................................... 26
5.3 Repair / Warranty ................................................................................................................. 27
5.4 PCB assembly ...................................................................................................................... 28
5.5 Schematics ........................................................................................................................... 29
Important! Advices or tips for the correct function of the EL-31
Caution! The instructions must be observed carefully.