Shenzhen PM-9000 Express Manual del operador descargar pdf (Pagina 282)

A.8 ECG Specifications

Lead type

3-lead (1 channel):

5-lead (2 channels):

I, II, III

I, II, III, aVR, aVL, aVF and V

Lead naming style AHA, EURO

Lead fault

The lead resistance is no greater than 51 kO

and it is in parallel

with a 0.047 µF capacitor, it will not cause a lead fault condition.

For 3/5-lead, differential offsets = ±300 mV, it will not cause a

lead fault condition.

Sensitivity selection

1.25 mm/mV (×0.125), 2.5 mm/mV (×0.25), 5 mm/mV (×0.5),

10 mm/mV (×1), 20 mm/mV (×2) and AUTO

Sweep speed 12.5 mm/s, 25 mm/s, 50 mm/s

Bandwidth (-3 dB)

Diagnostic mode:

Monitor mode:

Surgery mode:

0.05 to 100 Hz (812A module)

0.5 to 40 Hz

1 to 20 Hz

Common mode rejection

Diagnostic mode:

Monitor mode:

Surgery mode:

=90 dB

=105 dB

(The notch filter is turned off.)

50/60Hz Notch Filtering The monitor provides software filtering against the 50/60HZ

industrial frequency.

In monitor and surgery modes, the 50/60HZ filter will be turned

on automatically.

In diagnostic mode, the 50/60HZ filter will be turned off.

Input offset current =0.1µA (except currents to drive leads)

Differential input impedance = 5M.

Input signal range ±8mV (peak-to-peak value)

DC offset voltage ±300mV

Accuracy of input signal

reproduction

Methods A and D were used to establish overall system error and

frequency response.

Auxiliary current (Leads off

detection)

Active electrode: < 0.1 µA

Reference electrode: < 1 µA

Patient leakage current < 10uA

1 2 ... 277 278 279 280 281 282 283 284 285 286 287 ... 338 339

Shenzhen PM-9000 Express Manual del operador Pagina 282

Comentarios a estos manuales