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AWS-8248 User’s Manual 54

General features

Efficiency:

65% typical when measured at nominal input and rated load.

Input protection:

Protection against wrong polarity if the +24 V input voltage is mistakenly

reversed.

Output protection:

If for some reason the power supply fails to control itself, the built-in

over-voltage protection circuit will shut down the outputs to prevent dam-

age to external circuits. The trip point of the

crowbar circuit is approximately 5.7 ~ 7.0 V. The power supply will go

into hiccup mode under short circuit or overload

conditions, and will recover automatically when such conditions cease to

exist.

Environmental specifications

Operating temperature: 0 ~ 45° C

Storage temperature: -40 ~ 75° C

International standards compliance

Safety: UL 1950 D3

CSA 234

TUV EN 60950

1 2 ... 57 58 59 60 61 62 63 64 65 66

AWS-8248 1
AWS-8248 Users Manual ii 2
FCC Class A 3
Contents 7
Introduction 9
Chapter 1 Introduction 10
3 Chapter 1 Introduction 11
1.2 Specifications 12
5 Chapter 1 Introduction 13
Environmental specifications 14
500 Hz, 1.0 G peak to peak 14
Figure 1.3: Rear panel layout 15
1.4 Dimensions 16
System Setup 17
Chapter 2 System Setup 18
11 Chapter 2 System Setup 19
2.3 Adding cards 20
13 Chapter 2 System Setup 21
Figure 2.3: HDD installation 22
2.5 Attaching cables 23
2.6 Rack mounting 24
2.7 Panel mounting 25
AWS-8248 User’s Manual 18 26
Maintenance 27
Chapter 3 Maintenance 28
3.2 Power supply 29
3.3 LCD display module 30
23 Chapter 3 Maintenance 31
3.4 Keyboard translator 32
25 Chapter 3 Maintenance 33
AWS-8248 User’s Manual 26 34
3.5 LED board 35
3.6 Floppy disc drive (FDD) 36
3.7 Membrane keypad 37
AWS-8248 User’s Manual 30 38
31 Chapter 3 Maintenance 39
AWS-8248 User’s Manual 32 40
Macro Key Program 41
4.1 Introduction 42
4.2 Macro Key Review 42
4.3 Syntax 43
AWS-8248 User’s Manual 36 44
4.4 How to use SFED8248.COM 45
4.5 Example 46
AWS-8248 User’s Manual 40 48
Display Timing Mode & 49
56Hz 60Hz 70Hz 72Hz 75Hz 50
1024x768 50
A.2 OSD Operation Keypad 51
Power Supply Specifi 53
Appendix B 54
Power Supply 54
Specifications 54
B.2 -48 V 55
power supply 55
AWS-8248 User’s Manual 48 56
49 Appx. B 57
AWS-8248 User’s Manual 50 58
DC Output wire list 59
Table B.2: -48 V 59
B.3 24 V 60
53 Appx. B 61
Table B.4: 24 V 61
power supply load regulation 61
AWS-8248 User’s Manual 54 62
Touchscreen (optional) 63
C.1 Specifications 64
57 Appx. C 65
AWS-8248 User’s Manual 58 66

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