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SCM3712 REFERENCE MANUAL 79
9.3. Annex C – Installation Guidelines
The SCM3712 reader is a contactless reader working on 13.56MHz. In order to enable the maximum
performance the reader ideally needs to be installed in an metal free environment. The mechanical
integration may not allow for metal plates or metal rings in close proximity. Smaller metallic units like
single screws or rivets for mounting the reader can be used without remarkable influence on the
overall performance. Ideally also the mounting is done by non-metallic devices only. Of course also
the housing where the reader is being built in may not be made of metal or metalized plastics. In any
case the housing needs to have a metal free window in front of the reader around the reader antenna.
The bigger the distance is between metal and the reader the less the influence on performance will be
noticed.
The below drawings show the principles. Please note even at the mentioned distances there will be
some influence on the reader performance. The performance degradation is in a range were the end
user shouldn’t see any negative influence. We strongly recommend performing detailed tests before a
product roll out.
- SCM3712 1
- Reference manual 3
- Document history 4
- Contact information 4
- Table of Contents 5
- LIST OF FIGURES 8
- LIST OF TABLES 9
- 1. Legal information 10
- 2.2. Target audience 11
- REFERENCE MANUAL 8 12
- 2.5. References 13
- 2.6. Conventions 14
- 3.1. SCM3712 key benefits 15
- 3.2. SCM3712 key features 15
- REFERENCE MANUAL 12 16
- REFERENCE MANUAL 13 17
- User Tokens and/or 18
- NFC SmartPhone 18
- 0123 4567 18
- SCM 3712 18
- 3.4.1. Power supply 20
- 3.4.2. Data exchange 20
- 3.4.3. Recommendations 21
- 3.5. Applications 22
- REFERENCE MANUAL 19 23
- 4. SCM3712 characteristics 24
- REFERENCE MANUAL 21 25
- 4.2. Quick reference data 26
- REFERENCE MANUAL 23 27
- REFERENCE MANUAL 24 28
- 5. Hardware 29
- 5.3. Antenna 30
- 6. Software modules 31
- REFERENCE MANUAL 28 32
- 6.2. Utilities 33
- 6.3. Driver 34
- REFERENCE MANUAL 31 35
- REFERENCE MANUAL 32 36
- REFERENCE MANUAL 33 37
- REFERENCE MANUAL 34 38
- REFERENCE MANUAL 35 39
- 7. Firmware 40
- 8. Commands description 41
- 8.1.2. Get DATA Command 42
- 8.1.2.1. Description 42
- 8.1.2.2. Format 42
- 8.1.2.3. Response 42
- 8.1.2.4. Status Words 42
- REFERENCE MANUAL 39 43
- REFERENCE MANUAL 40 44
- REFERENCE MANUAL 41 45
- 8.2.1.5. Example 46
- REFERENCE MANUAL 43 47
- 8.2.2.5. Example 48
- REFERENCE MANUAL 45 49
- 8.2.4.1. Description 50
- 8.2.4.2. Format 50
- 8.2.4.3. Response 50
- 8.2.4.4. Status Words 50
- 8.2.4.5. Example 51
- REFERENCE MANUAL 48 52
- REFERENCE MANUAL 49 53
- REFERENCE MANUAL 50 54
- REFERENCE MANUAL 51 55
- 8.5.1.3. Read Byte (READ) 56
- REFERENCE MANUAL 53 57
- REFERENCE MANUAL 54 58
- REFERENCE MANUAL 55 59
- 8.5.3.1. REQC 60
- 8.5.3.2. Request Service 61
- 8.5.3.3. Request response 61
- 8.5.3.4. Read 61
- 8.5.3.5. Write 62
- 8.6.1.1. Description 63
- 8.6.1.2. Input buffer 63
- 8.6.1.3. Output buffer 63
- REFERENCE MANUAL 61 65
- REFERENCE MANUAL 62 66
- 8.6.8.1. Description 67
- 8.6.8.2. Input buffer 67
- 8.6.8.3. Output buffer 67
- REFERENCE MANUAL 64 68
- Generic IOCTLs 69
- 8.7.1. IOCTL_GET_CARD_TYPE 69
- 8.7.1.1. Description 69
- 8.7.1.2. Input buffer 69
- REFERENCE MANUAL 66 70
- 8.7.2.4. Output buffer 71
- 8.7.2.5. Return Value 71
- 8.7.3.1. Description 72
- 8.7.3.2. Input buffer 72
- 8.7.3.3. Output buffer 72
- 8.7.3.4. Return Value 72
- 8.8.1. IOCTL_INITIATOR_POLL 73
- 8.8.1.1. Description 73
- 8.8.1.2. Input Buffer 73
- 8.8.1.3. Output Buffer 73
- 8.8.1.4. Return Value 74
- 8.8.2.1. Description 74
- 8.8.2.2. Input Buffer 74
- 8.8.2.3. Output Buffer 74
- REFERENCE MANUAL 71 75
- P2P Target Mode IOCTLs 76
- 8.8.5.2. Input Buffer 77
- 8.8.5.3. Output Buffer 77
- 8.8.5.4. Return Value 77
- 8.8.6. IOCTL_TARGET_SEND 78
- 8.8.6.1. Description 78
- 8.8.6.2. Input Buffer 78
- 8.8.6.3. Output Buffer 78
- 8.8.6.4. Return Value 78
- 9. Annexes 79
- REFERENCE MANUAL 76 80
- REFERENCE MANUAL 77 81
- REFERENCE MANUAL 78 82
- REFERENCE MANUAL 79 83
- Background Metal Plate 84
- External Antenna 84
- SCM3712 ANT 84
- REFERENCE MANUAL 82 86
- REFERENCE MANUAL 83 87
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