HUDSON 9
72
72
8.2.2 Storage and Transport ( according to IEC 721/EN60721 Class 2Ms)
Test Procedure IEC 68/EN 60068
Freq. range Hz 5~10 10~100 100~500
Change db/oct +12 -6
Spectral m
2
/s
3
0.75
Accel. RMS m/s
2
11.4
Axis - 3
Vibration
(random vibration)
IEC 68-2-64
EN 60068-2-64
Duration/Axis Minutes 30
Pulse Half-sine
Acceleration m/s
2
250
Duration ms 6
Shock
IEC 68-2-29
EN 60068-2-29
Number 100 shocks in all directions
Weight kg 0~9.1 9.1~18.2 18.2~27.2
Fall height m 0.9 0.76 0.61
Direction and number 1 time on every surface, edge and border
Free fall
ISO 2248
EN 22248
Underground concrete
Toppling
ISO 8768
EN 28768
Number Over every edge one time
Bounce Time
15 min in each transport direction.
Or total 45 min. See NSTA Proc.
9. Quality
9.1. Display defect Requirements
Max. 5 red, green or blue bright dots (sub-pixels), max. 3 green dots, max. 1 joined bright dots, min. distance
between 2 bright dots: 10 mm. Bright dots are tested with full screen black pattern (R.G.B. = 0, 0, 0)
Max. 5 black dots. Max. 2 joined (2 adjacent) black dots, no defect with 3 adjacent black dots. Min. distance
between 2 black dots: 10mm。Black dots are tested with full screen white (R.G.B. = 255,255,255)/ red (R.G.B. =
255, 0, 0)/green (R.G.B. = 0, 255, 0)/blue (R.G.B. = 0, 0,255) pattern.
Total amount of Dot Defects are 5 Max. (Including bright and dark dot defects)
10. Audio Electrical Performance(the item 10 is applicable for LM-720A)
10.1. Standard Testing Conditions:
10.1.1. Test Equipment: Audio Analyzer test equipment
10.1.2. Conditions of Input Signal:
1). Signal Frequency: 1 KHz
2). Input Signal (max): 1Vms
3). Ambient Temperature: 25℃±5℃
10.1.3. Test Distance: 50cm from monitor screen and at the center of left and right speaker
10.1.4. RL (Impedance of load): Refer to the RL in the specification of amplifier IC (80ohm).
10.2. Amplifier Characteristic : Refer to “Specifications of Speaker”
10.2.1. Output: Normal 1.0~1.1 WATT Per speaker
10.2.2. Impedance: 8ohm ± 1.2ohm at 1V (1000 Hz)
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