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