TODO
----
+[ ] adcdac_ut works
+ + plays sine wave until S2 pressed
+ + then mic signal echoes to speaker (wtahcout for howling feedback)
+
+TODO:
(need more detail, pass/fail conditions)
[ ] set up procedure to get levels right/minimise distortion on TX
1. [ ] Should R46 be log? Last half of travel makes very little difference to subjective volume.
2. [ ] Item 13 above, noise from LM386
+3. [ ] Wiki with common pin outs of CN12
+ [ ] label schematic near CN12 to make working out nets easier
+ [ ] examples of how to connect grounds when AF out is on RJ45
+ [ ] Matt " for fat fingers rather fiddly"
+ + can we make it larger?
+ [ ] labels near R52, R47, R42, R46 on sch that match overlay and enclosure
+
+Matt testing 28 Jan 2015
+------------------------
+
+ + First SM1000 OTA SM1000 QSO between VK5AKH (Andy) and VK5ZM (Matt) at
+ Matt's QTH. Matt connected the SM1000 to his IC706. 2130 SA time
+
+ 0. Connected up patch panel, used rig mic, ptt, rig spkr through RJ45.
+ spkr and ptt had common ground which required and extra grnd jumper.
+ Matt " for fat fingers rather fiddly". Would be good to doucment this
+ for common radios.
+ 1. While monitoring with FT817 found similar slope on spectrum/scatter
+ diagram to IC7200
+ + HF modem tones around 2000 Hz attenutaed by several dB
+ + get to the bottom of tx slope, say with test signal
+ 2. Andy sounded a bit distorted on rx
+ + Backed off his mic level and was better
+ 3. Matt lugged in a Heil headset, had to reduce mic gain, clipping led
+ was very useful. No noise issues. Mic gain trimmer was a little too
+ sensitive. Suggest multiturn trimmer.
+ 4. Analog mode works OK once mic gain adjusted. Tip: do mic level adj
+ in analog mode, then dig should be OK.
+ 5. Switching an to dig worked OK, levels OK.
+ 6. AF gain of IC720 was slaved to the AF out in RJ45. So trap is turning
+ down AF gain stopped FreeDV, turning up led to clipping.
+ 7. Secondary use is analog processing. Move sliders to adf filters,
+ look at audio spectra with white noise or chirp, monitor on 2nd radio.
--- /dev/null
+Configuration
+--------------
+
+1. User applies power (how?)
+
+2. User configures "to radio", "from radio" audio wires using patch panel (how?) The "from radio" signal is connected to the speaker or audio output of the Radio. The "to radio" signal is connected to the microphone or audio in of the Radio.
+
+3. User configures PTT line using patch panel (how? Will this be open collector, opto, or RS232/USB rig control?)
+
+How to test? Verify levels, connections are OK? Common pitfalls?
+
+Configuration Menus
+-------------------
+
+TBC
+How to set mode?
+USB and RS232 connectivity
+Firmware uploads?
+
+Operation (rx)
+--------------
+
+When no FreeDV signal is present SmartMic acts in "pass through" mode - the analog audio on the "from radio" port is sent directly to the speaker. The nominal (factory set) "from radio" gain is such that analog signal is about the same level as the decoded digital speech.
+
+The operator tunes radio until a FreeDV modem signal is heard. When within +/- 200Hz of the centre frequency the FreeDV rx system (demod and Codec 2 decoder) will become synchronised and digital voice will be output to the speaker.
+
+When the FreeDV rx system is synchronised the "sync" LED will light.
+
+When the FreeDV rx system detects errors in the received signal the "bit error" LED will blink.
+
+When the "from radio" signal is too strong for the FreeDV rx the "clip" LED will blink.
+
+Operation (tx)
+--------------
+
+When the PTT button is pressed the Radio will be switched to transmit mode. The Tx LED will light.
+
+When the level of speech in the microphone is correct the "clip" LED will blink occasionally. If the clip LED stays on the microphone level is too high. if the clip led never comes on the level is too low.
+
+The Radio ALC should be adjusted so that the ALC meter just moves.
+
+
--- /dev/null
+Testing SM1000 OTA at Matt's House 28 Jan 2015
+----------------------------------------------
+
+ + First SM1000 OTA SM1000 QSO between VK5AKH (Andy) and VK5ZM (Matt) at
+ Matt's QTH. Matt connected the SM1000 to his IC706. 2130 SA time
+
+ 0. Connected up patch panel, used rig mic, ptt, rig spkr through RJ45.
+ spkr and ptt had common ground which required and extra grnd jumper.
+ Matt " for fat fingers rather fiddly". Would be good to doucment this
+ for common radios.
+ 1. While monitoring with FT817 found similar slope on spectrum/scatter
+ diagram to IC7200
+ + HF modem tones around 2000 Hz attenutaed by several dB
+ + get to the bottom of tx slope, say with test signal
+ 2. Andy sounded a bit distorted on rx
+ + Backed off his mic level and was better
+ 3. Matt lugged in a Heil headset, had to reduce mic gain, clipping led
+ was very useful. No noise issues. Mic gain trimmer was a little too
+ sensitive. Suggest multiturn trimmer.
+ 4. Analog mode works OK once mic gain adjusted. Tip: do mic level adj
+ in analog mode, then dig should be OK.
+ 5. Switching an to dig worked OK, levels OK.
+ 6. AF gain of IC720 was slaved to the AF out in RJ45. So trap is turning
+ down AF gain stopped FreeDV, turning up led to clipping.
+ 7. Secondary use is analog processing. Move sliders to adf filters,
+ look at audio spectra with white noise or chirp, monitor on 2nd radio.
+++ /dev/null
-Configuration
---------------
-
-1. User applies power (how?)
-
-2. User configures "to radio", "from radio" audio wires using patch panel (how?) The "from radio" signal is connected to the speaker or audio output of the Radio. The "to radio" signal is connected to the microphone or audio in of the Radio.
-
-3. User configures PTT line using patch panel (how? Will this be open collector, opto, or RS232/USB rig control?)
-
-How to test? Verify levels, connections are OK? Common pitfalls?
-
-Configuration Menus
--------------------
-
-TBC
-How to set mode?
-USB and RS232 connectivity
-Firmware uploads?
-
-Operation (rx)
---------------
-
-When no FreeDV signal is present SmartMic acts in "pass through" mode - the analog audio on the "from radio" port is sent directly to the speaker. The nominal (factory set) "from radio" gain is such that analog signal is about the same level as the decoded digital speech.
-
-The operator tunes radio until a FreeDV modem signal is heard. When within +/- 200Hz of the centre frequency the FreeDV rx system (demod and Codec 2 decoder) will become synchronised and digital voice will be output to the speaker.
-
-When the FreeDV rx system is synchronised the "sync" LED will light.
-
-When the FreeDV rx system detects errors in the received signal the "bit error" LED will blink.
-
-When the "from radio" signal is too strong for the FreeDV rx the "clip" LED will blink.
-
-Operation (tx)
---------------
-
-When the PTT button is pressed the Radio will be switched to transmit mode. The Tx LED will light.
-
-When the level of speech in the microphone is correct the "clip" LED will blink occasionally. If the clip LED stays on the microphone level is too high. if the clip led never comes on the level is too low.
-
-The Radio ALC should be adjusted so that the ALC meter just moves.
-
-
projects / freetel-svn-tracking.git / commitdiff