forked from sinara-hw/assembly
94 lines
3.7 KiB
Markdown
94 lines
3.7 KiB
Markdown
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# Sinara 9805 RF Power Amplifier "Booster"
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* [Firmware](https://github.com/quartiq/booster)
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* [Documentation](https://quartiq.de/booster/)
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* [Wiki](https://github.com/sinara-hw/Booster/wiki)
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## Firmware
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### Flashing
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```shell
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git clone git@github.com:quartiq/booster.git
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cd booster
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nix-shell -p rustup cargo rustc dfu-util
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cargo install cargo-binutils
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rustup component add llvm-tools-preview
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cargo build --release
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cargo objcopy -- -O binary booster.bin
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# enter dfu mode by either serial terminal or
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# press `DFU Bootloader` button while rebooting
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dfu-util -a 0 -s 0x08000000:leave --download booster.bin
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```
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### Basic setup via USB
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1. `nix-shell -p cutecom mosquitto appimage-run`
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2. Install and run `cutecom`: `nix-shell -p cutecom`
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3. Create mosquitto config `mosquitto.conf` with your bound address:
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```
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bind_address 192.168.1.123
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allow_anonymous true
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```
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4. `mosquitto -c mosquitto.conf -d`
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5. Connect to the Booster via `/dev/ttyACMX` port, baud 9600
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6. Send `help` command to check if it works
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7. Enter commands (change details if necessary):
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```shell
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write broker-address 192.168.1.123
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# only if you need static IP address
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write gateway 192.168.1.1
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write ip-address 192.168.1.142
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write netmask 255.255.255.0
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# apply changes and wait until it fully rebooted
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reset
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```
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8. Check the Booster connects to your broker.
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9. Download AppImage from [MQTT Explorer](https://mqtt-explorer.com/)
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10. Run it with `appimage-run /path/to/MQTT-Explorer-XXX.AppImage`
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11. Connect to your MQTT broker
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## Calibration
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1. Assemble Kasli with one Urukul, build and flash firmware for it with [booster.json](../extra/booster.json)
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2. Run [dds_for_booster.py](../extra/dds_for_booster.py) experiment once
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3. Attach parallel 50 Ohm load to the oscilloscope, as shown on the picture: ,
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4. Configure oscilloscope for 1M Ohm impedance
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5. Attach attenuator to the Urukul's RF2
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6. `cd py/`
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7. Enable channels: `python -m booster --broker 192.168.1.123 --prefix dt/sinara/booster/xx-xx-xx-xx-xx-xx --channel N tune=0.1`
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8. Use [online calculator](https://www.analog.com/en/design-center/interactive-design-tools/dbconvert.html) for Volts to dBm conversion
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9. Using [booster_template](../extra/booster_template.ods) fill in `y0`, `y1`, `m`, `c`, values using instructions below
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10. Update settings with the adjusted values
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11. Save settings with `python -m booster --broker 192.168.1.123 --prefix dt/sinara/booster/xx-xx-xx-xx-xx-xx --channel N save`
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12. Reboot and check settings are applied
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### Input power
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1. Connect Urukul's output (see booster template for exact ports) to the oscilloscope with load
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2. Measure it's RMS, convert to dBm, put it to the measured cell
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3. Connect Urukul's output to the Booster's input
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4. Get the input value from telemetry (see booster template for exact path)
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5. Do steps 1-4 for second Urukul's output
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6. Fill in `slope` and `offset` from settings
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7. Do steps 1-6 for every channel
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_Note: default setting and Urukul's measured values are usually the same across channels, so you can
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extrapolate them for all channels._
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### Output and reflected power
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1. Connect Urukul's output (see booster template for exact ports) to the Booster's input
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2. Connect Booster's output to the oscilloscope with load
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3. Measure it's RMS, convert to dBm, put it to the measured cell
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4. Get the output value from telemetry (see booster template for exact path)
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5. Disconnect the Booster's output
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6. Get the reflected value from telemetry
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7. Do steps 1-6 for second Urukul's output
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8. Fill in `slope` and `offset` from settings for output and reflected curves
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9. Do steps 1-8 for every channel
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_Note: default setting values are usually the same across channels, so you can extrapolate them for all channels._
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