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General Information Radio Port Mgr . Edit TNC/modem Port . Edit Sound Card Port - Tuning Aid - Volume Settings . Edit Parameters New Port Setup Network TCP/IP Settings Radioport Sharing Auto Start Clients Other Settings Views Program Status Port Activity Status Shared Radio Ports AX.25 Status (Stations) Connected Programs Heard Stations List Monitor Other Features TCP/IP Over Radio . Driver Install . PE Pro Settings . Windows Settings Registration HTTP Interface Live Update Launch IE Browser Go to AGWsoft web site Send Error Report Tips, Tricks, & Trouble Tips and Tricks Problems? Sound Card Use . Sound Card Interface . HF Operations . 9600 Operations . Receive Problems . Transmit Problems
Help Date: 21 June 2004
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Sound Card Tuning Aid
The Sound Card Tuning
Aid is only accessible
from the
Radio Port Manager
screen
and only accessible for sound card
radioports.
Use
the Manager's list to
select (or highlight) the port to edit and then,
from the menu, select
Edit: Tuning
Aid
or
use the
Tuning Aid Icon
OscilloscopesAt least one oscilloscope display will appear on the left side of the screen. A second scope below the first only appears if you have selected Dual Port use of the sound card on the Properties screen. There are 4 scope display styles available from the drop-down list: Sine Wave, Waterfall, Eye (scatter), and Frequency. The first two will be most useful. 1. Sine Wave - useful for determining the strength of the signal (audio volume) and the quality of the signal. A signal with good strength will fill about 1/2 of the screen (relative distance between the peaks and valleys of the wave). You can use the Volume Control settings for RX (receive) to adjust them. A signal with good quality will display a smoothly flowing wave pattern. Other wave patterns indicate a poor signal which may be indicative of 'on air' packet collisions, poor formed signals from the sending station, or RFI (interference) either on the air on from within your station. Signal samples for 1200 baud:
Signal sample for 9600 baud:
The waterfall should be centered between the two vertical white lines. For AFSK (UHF/VHF), it should center automatically. For HF operations (FSK), adjust the radio's receive frequency to center the waterfall. Centering is critical for accurate decoding of HF packets. The strongest signal (yellow/red color streak) must lie between those two lines, as this next screen shot illustrates:
The screen shot below shows an HF radio that needs tuning. The yellow area showing packet activity is below the tuned frequency marked by the two vertical lines:
This sample below is a waterfall display showing two 1200 baud packets. The packets are between the two vertical white lines and have black areas to their left and right.
The upper packet has fair modulation and was decoded. Also, note the black
area above the packet with small green vertical
lines. This is the result of TXDelay, i.e. a
short interval of carrier
with no modulation.
DCD Lights
Equalization Sliders
The default slide setting is at 4
(an arbitrary number). Since PE Pro doesn't know if your clock is
slow or fast, trial and error is the only way to determine if any changes up or down
will make a difference. Note that changes will only take effect after
you restart PE Pro. Pressing this button takes you to the sound card Volume Settings window where you can adjust TX audio levels, RX audio levels, and the RX input source jack.
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