Calibration

Booster should be pre-calibrated by the supplier, users should never need to recalibrate. Incorrect calibration can damage Booster and any devices connected to it.

• Calibration takes place using the terminal exposed via the USB interface.

• To calibrate use a 50 Ohm terminator that can safely dissipate 10 W.

• <channel number> is 0...7

Module Power Amplifier Current Calibration

Each RF Channel has a power stage amplifier that requires a proper current bias. This is calibrated as follows.

1. Leave output and input SMAs open.
2. Run biascal <channel number> 50. (50 mA)

result: success

After these steps, you should see following result indicative of success:
TODO ADD CLI OUTPUT

result: error

After these steps, you may see the following result:

[biascal] error, current too high 52 > 50

This is related to module current exceeding 2% setpoint margin because DAC step is set a little bit high. It'll be fixed soon, but for now, you can just redo your calibration with slightly higher current eg. 52 mA and it should be fine

Output Interlock Calibration

An internal reference is compared with output power for this interlock. The internal reference is calibrated as follows.

Supply 200 MHz RF to amplifier input at power level that results in amplifier output (P_out) of XX dBm. Connect amplifier output SMA to 50 Ohm load.

1. Set P_out = 23 dBm.
2. Run intcal <channel number> 1 23.0.
3. Set O_out to 33 dBm.
4. Run intcal <channel number> 2 33.0.

result: success

[ointcal] done, interlock value = 994 [intcal] Calibration step = 1 completed = 994 [intcal] done, got 2-point cal val 994 pwr 36 [intcal] done, got power factors a=8.91 b=-25.49

Output & Reverse Power Monitoring Calibration

Supply 200 MHz RF to amplifier input at power level that results in amplifier output (P_out) of XX dBm. Connect amplifier output SMA to 50 Ohm load or leave open as instructed.

1. P_out = 0 dBm into 50 Ohm load.
2. Run calpwr <channel number> 1 0.0
3. P_out = 0 dBm into open load.
4. Run calpwr <channel number> 3 0.0
5. P_out = 33 dBm into 50 Ohm load.
6. Run calpwr <channel number> 2 33.0
7. P_out = 33 dBm into open load.
8. Run calpwr <channel number> 4 33.0

After these steps, you should see following result:
TODO ADD CLI OUTPUT

Input interlock calibration

Supply 200 MHz RF to amplifier input at power level = Gen_out. Connect amplifier output SMA to 50 Ohm load.

1. Set output interlock to safe level: intv <channel number> 30.
2. Set Gen_out = 3 dBm, with generator connected to channel input SMA.
3. Run cal <channel number> 0

After these steps, you should see following result:
TODO ADD CLI OUTPUT