Performance Specification

The Performance specification table summarizes shepherd’s key performance metrics. Refer to our paper for a detailed description of how these values were obtained. Some of the values were measured with an early prototype and may not accurately reflect the current hardware revision.

Performance specification

Range

Harvester voltage

0 mV - 4.8 V

Harvester current

0 mA - 50 mA

Emulator voltage

0 mV - 4.8 V

Emulator current

0 mA - 50 mA

24h DC Accuracy

Harvester voltage

19.53 uV +/- 0.01 %

Harvester current

190 nA +/- 0.07 %

Emulator voltage

76.3 uV +/- 0.012 %

Emulator current

381.4 uA +/- 0.025 %

Bandwidth

All recording channels

15 kHz

Risetime

Emulator voltage

7 us

Emulator current

19.2 us (?)

GPIO sampling speed

580 kHz - 5 MHz

Power consumption

345 mA

Max. Synchronization error

< 1.0 us