Update operating instructions

operating instructions

@@ -1,13 +1,13 @@
-User instructions for Raduino_v1.20.1
+User instructions for Raduino_v1.21
 
 After the version update all calibration data, drive level settings, etc will be erased.
 Before updating note down your cal values etc. After the update use the Function Button to set them back again.
 
 10-TURN TUNING POT
-The default tuning range with the standard supplied 1-turn tuning pot is only 50 kHz.
-If you install a 10-turn pot instead you can extend the tuning range for full 40m band coverage.
+The default frequency span of the standard supplied 1-turn tuning pot is only 50 kHz.
+If you install a 10-turn pot instead you can extend the span for full 40m band coverage.
 https://github.com/amunters/bitx40/blob/master/Vishay%20100K%2C%2010-turn%20pot%20wire%20up.jpg
-Using the Function Button, go to the SETTINGS menu and set the desired tuning range.
+Using the Function Button, go to the SETTINGS menu and set the desired pot span.
 
 Don't have a Function Button yet?
 If you don't install a pushbutton then the basic functions will still work.
@@ -26,14 +26,20 @@ When the PTT is pressed (TX mode), the regulator will be on, so pin A0 will see
 The PTT SENSE is required for the CW, RIT, SPLIT functionality, and for disabling frequency updating during TX
 (to prevent "FM-ing"). If you don't install the PTT sense, LSB and USB operation will still work normally.
 
-CONNECTING A MORSE KEY or 'TUNE' BUTTON:
-A morse key (or electronic keyer) can be connected to Raduino pin A1 (connector P1, brown wire).
+CONNECTING A STRAIGHT MORSE KEY or 'TUNE' BUTTON:
+A straight key (or external electronic keyer) can be connected to Raduino pin A1 (connector P1, brown wire).
 When the key is up (open) pin A1 will be HIGH.
 When the key is down (closed, shorted to ground) pin A1 will be LOW, and a carrier will be transmitted.
 You could also wire up a simple push button instead of connecting a morse key. The generated CW carrier can be used for
 tuning up your antenna. In that case please note that you will be transmitting a carrier at full duty cycle, therefore don't
 keep the tune button pressed for too long to prevent overheating the final!
 
+AUTOMATIC KEYER - CONNECTING A PADDLE:
+The Raduino is set up for straight key operation by default. If you want to use the automatic keyer, go to the SETTINGS menu
+and to 'CW parameters' and select 'paddle'.
+Connect the 'dit' contact to Raduino pin A1 (connector P1, brown wire).
+Connect the 'dah' contact to Raduino pin D3 (connector P3).
+
 CW-CARRIER WIRING:
 This is required for CW operation (or when you want to generate a carrier for tuning)
 Connect a wire from Raduino ouput D6 (connector P3, pin 15), via a 10K series resistor, to the input of the mixer.
@@ -140,26 +146,31 @@ In the SETTINGS menu:
   These caps attenuate the VFO signal at higher frequencies. They're actually only needed for the analog VFO
   and can safely be removed if you use the Raduino DDS instead of the analog VFO.
 
-5 short presses - set tuning range
+5 short presses - set tuning range (min frequency, max frequency, pot span)
 
-  - the default tuning range is 50 kHz (7100-7150 kHz), this is OK for a standard 1-turn pot
-  - if you install a multi-turn pot instead you can extend the tuning range
-  - using the tuning pot, set the desired tuning range
-  - recommended value: 50 kHz for a 1-turn pot, 200 kHz for a 10-turn pot
-    (if the radio is mainly used for CW: a tuning range of 10-25 kHz is recommended)
+  - using the tuning pot, set the minimum tuning frequency and press the FB
+  - using the tuning pot, set the maximum tuning frequency and press the FB again
+  The default pot span is 50 kHz, this is OK for a standard 1-turn pot
+  If you install a multi-turn pot instead you can extend the pot span
+  - using the tuning pot, set the desired pot span
+    recommended value: 50 kHz for a 1-turn pot, 200 kHz for a 10-turn pot
+    (if the radio is mainly used for CW: a pot span of 10-25 kHz is recommended)
   - press the FB again to save the setting
 
-6 short presses - set CW paramaters (sidetone pitch, semiQSK on/off, QSK delay)
+6 short presses - set CW paramaters (sidetone pitch, CW-key type, semiQSK on/off, QSK delay)
 
  - the sidetone is generated
  - using the tuning pot, set the desired sidetone pitch
  - press the FB
+ - using the tuning pot, select "straight" for straight CW key operation
+   or "paddle" for automatic CW keyer
+ - press the FB
  - using the tuning pot, select semiQSK ON or OFF
  - press the FB
  - using the tuning pot, set the desired timeout value (ms)
  - press the FB again to save the settings
 
-7 short presses - set frequency SCAN parameters
+7 short presses - set frequency SCAN parameters (lower limit, upper limit, step size, step delay)
 
  - using the tuning pot, set the desired lower frequency scan limit
  - press the FB