52
When the filter is shut off, take 10Hz sine wave as reference.
From 0.5 to 50Hz, the tolerance of amplitude of frequency is -10%
～
+5%.
From 50 to 70Hz, the tolerance of amplitude of frequency is -30%
～
+5%
1.14
Features of Low Frequency .Time Constant no less than 3.2s
1.15
Baseline stability
1.15.1
Stable Power: baseline drifting should be no more than 1mm
1.15.2
Unstable Power: baseline drifting should be no more than 1mm
1.15.3
Sensitivity (no signal input) : baseline drifting should be no more than 2mm
1.15.4
Temperature Drift: From 5
～
40
℃
, baseline drifting should be no more than 0.5mm/
℃
1.16
Paper Speed
5mm/s, 6.25 mm/s, 10mm/s, 12.5 mm/s, 25 mm/s, 50 mm/s . tolerance:
±
5%
1.17
The impact of AC to DC conversion
The DC indicator should be lit when changing AC to DC conversion. All operation should
be normal.
1.18
Printing resolution (Thermal matrix printing)
Y axis
≥
8 dots/mm
；
X axis
≥
32 dots/mm
（
Paper speed 25 mm/s
）
,
≥
16 dots/mm
（
Paper speed 50 mm/s
）
.
1.19
Request of Thermal matrix printing
Printer can record letters and marks. When recording, the printer could print out lead, paper
speed, gain and etc.
1.20
The range of voltage input
Each lead should no less than 0.03 to 5mV and the waveform should be correct.
1.21
Tolerance of Weighted parameters
Should be no more than
±
10%
