HP Philips PageWriter 200/200i

The HP Philips PageWriter 200/200i features Dimensions 4″ x 17″ x 15″ (115mm x 437mm x 392mm) (HxWxD)
Weight 19 lbs (8.5kg)
Signal Processing/
Recording Frequency: 0.05-150, 0.15-150, 0.5-150 Hz
0.05-100, 0.15-100, 0.5-100 Hz
0.05-40, 0.15-40, 0.5-40 Hz
Filters: Noise filter always enabled. Configurable baseline wander, noise, and aircraft filters.
Standardization: 1 mV +/- 50uV, 200 ms +/- 4 ms at 10 mm/mV, 25 mm/sec.
Common mode rejection: 110 dB or greater at power line frequency in any lead with 51 Kohms is parallel with 0.047μF electrode impedance imbalance and up to +/-300 mV dc offset in any lead wire.
DC offset capability: +/-300 mV dc at patient input.
Input bias: less than 40 nA per input wire; less than 500 nA for right leg drive out.
Input impedance: greater than 15 Mohm at dc; typically greater than Mohm at dc.
Recording technique: high-resolution, digital array printer using thermal sensitive paper, 200 DPI (voltage axis) by 500 DPI (time axis) at 50 mm/sec
Basic Controls ECG controls: on/standby, auto, manual, chart speed, size, copy, filter, page advance, ECG format selections. Rhythm lead, ID. ECG format selections: auto (with 0, 1, or 3 rhythm leas), manual (with 3, 6 or 12 leads). Keyboard with full alphanumeric capability
Instrument Test Self-test performed each time cardiograph is turned on
Battery Capacity: 40 auto ECGs and 40 copies on a single charge or 40 minutes continuous rhythm recording. Recharge: typically seven hours to 90% capacity and 16 hours to full capacity
Storage Capacity: 30 ECGs. Type: 2 MB of non-removable flash memory