I am testing BioMed devices. Can you recommend equipment to measure and evaluate all of the following? Please note any required probes other than 1x/10x OScope probes.
1) Signals ranging from 0.15 mV to 5 mV at 4 Hz to 100 Hz. They are BioMed test patterns and patient simulations (ECG, EKG, Blood Pressure, etc), so the "frequency" is actually a wave form repeat frequency. The wave forms can be simple sine, square, and triangle waves, but also AAMI standard waveforms. The AAMI waveforms are made up of steps and ramps of about 0.5 mV, each lasting from 1 to 120 mSec, with the entire sequence repeated at 4 to 100 Hz. The measurements required are peak voltages and cycle repeat time interval. (Voltage measurement accuracy is important, 1% of reading being OK, 0.25% being excellent.) We would also like to eyeball evaluate "step flatness" and "ramp straightness." A printed 'scope sweep would likely be more than sufficient for this requirement.
2) 1 to 10 V at 4 to 100 Hz; square waves, 10 to 50% duty cycle. The required measurements are duty cycle (or pulse width is OK), rise time to nearest 0.01 mSec, and frequency to 0.01 Hz. (1% accuracy would be excellent.)
3) Sine and square waves; 1.000V and 1.000 second period (1 Hz). The minimum measurement accuracy and resolution is +/- 5 mV and 0.0025 Sec.
The emphasis on resolution and accuracy is because we have to document it for each measurement.
Atlanta, GA. USA