Motorola PRO2150 Service Manual Page 132
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- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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August 30, 2002 99R85452E01-O
Glossary-6
Squelch Level The amount of carrier energy required to unmute the radio’s speaker
upon satisfying the selected Carrier Squelch threshold. Low level allows
more transmissions with less clarity to unmute the radio’s speaker. High
level increases the squelch threshold causing a stronger carrier signal to
be required before the radio’s speaker will unmute. This helps to reduce
unwanted noise.
Tone Private Line
(TPL)
Transmitted when the receiving radio is to only receive calls from radios
with specific TPL codes, this creates communications groups while
operating in Conventional Dispatch mode. TPL allows for more use and
privacy on a frequency. TPL is transmitted at a sub-audible (not able to
be heard) frequency. Also known as CTCSS.
TOT Time-Out Timer: a timer that limits the length of a transmission.
TPL Tone Private-line.
Tx DPL Code The Digital Private Line (DPL) code that transmits while operating on the
current channel.
Tx DPL Invert Setting Tx DPL Invert causes Digital Private Line (DPL) signals to be
inverted before they are transmitted from the radio, while operating on
the current channel. Inverted coding allows for more traffic/usage on fre-
quencies.
Tx Frequency A designated frequency used when transmitting carrier for the current
channel.
Tx Offset The offset that will be added to the VFO Rx Frequency when radio trans-
mits in VFO mode. Available options are: None (transmits using Rx Fre-
quency), Pos (transmits using Rx Frequency + Offset Frequency), Neg
(transmits using Rx Frequency - Offset Frequency), User (transmits
using the User Defined Tx Frequency).
Tx Power The transmit power level while operating on the current channel.
High: Used when a stronger signal is needed to extend transmission
distances. Low: Used when communicating in close proximity, and to
keep the radio from transmitting into other geographical groups operat-
ing on the same frequency.
Economy Low: Used when communicating distance is close, e.g.,
within the same warehouse, stadium, etc.
Tx TPL Frequency A designated frequency used to transmit Tone Private Line (TPL) encod-
ing, while operating on the current channel. This frequency can directly
correlate to the Tx TPL Code field; however, non standard code frequen-
cies may also be selected.
µC Microcontroller.
UHF Ultra High Frequency.
Unmuting A radio unmutes, when it opens its speaker to receive audio.
µP Microprocessor.
Upper Scan
Frequency
The upper limit that VFO will scan.
Term Definition
- Portable Radio 1
- Table of Contents i 3
- Table of Contents iii 5
- ATTENTION! 7
- Chapter 1 Introduction 9
- 1.2.3 Piece Parts 10
- 1.2.4 Technical Support 10
- 1.2.5 Parts Identification 10
- 1.3 Radio Model Information 11
- 1.4 Radio Features 12
- CPS User 13
- Introduction 14
- : Radio Features 14
- Chapter 2 Maintenance 15
- 2.4.2 Rigid Circuit Boards 16
- 2.4.3 Flexible Circuits 17
- 2.4.4 Chip Components 17
- 2.4.5 Shields 18
- See Figure 2-1 19
- See Figure 2-2 19
- Figure 2-2 19
- See Figure 2-3 20
- See Figure 2-4 20
- 2.6.3 RF Board Disassembly 21
- 2.7.1 RF Board Reassembly 22
- See Figure 2-9 23
- See Figure 2-10 23
- See Figure 2-11 23
- Figure 2-12 24
- See Figure 24
- See Figure 2-15 24
- 12. Attach the battery 25
- Figure 2-15 25
- Figure 2-16 26
- Description 27
- 2.9 Service Aids 28
- 2.10 Test Equipment 29
- Figure 2-17 30
- Figure 2-18 30
- 2.12 IF Test Box (DSK001C702) 31
- Maintenance 32
- : IF Test Box (DSK001C702) 32
- Chapter 3 Radio Tuning 33
- Figure 3-3 34
- 3.4.1 Audio Modulation Tuning 35
- 3.4.3 Tuning Frequency 36
- Chapter 4 Radio Programming 37
- 4.3 CPS Programming 38
- 4.4 Programming 39
- 4.4.2 DPL Codes 40
- 4.4.3 Examples 40
- Radio Programming 41
- : Programming 4-5 41
- : Programming 42
- Chapter 5 Error Code Displays 43
- Error Code Displays 44
- : Error Codes 44
- Chapter 6 Accessories 45
- 6.7 Manuals 46
- 6.8 Software 46
- 7.1 Model Chart 47
- 7.2 Specifications 48
- 7.3 Theory of Operation 49
- 7.3.4 CPU / Control Section 50
- 7.3.6 Transmitter Section 51
- 7.3.7 Receiver Section 52
- 7.3.8 Battery Section 53
- 7.4 Block Diagrams 54
- 7.4.2 Controller 55
- 7.4.3 VCO 55
- 7.4.4 Transmitter 56
- 7.4.5 Receiver 56
- 7.5 Troubleshooting Charts 57
- Troubleshooting Flow Chart 58
- VHF Band Information 62
- : Troubleshooting Charts 62
- Top Side Bottom Side 64
- 8.1 Model Charts 79
- Model Description 80
- 8.2 Specifications 81
- 8.3 Theory of Operation 82
- 8.3.4 CPU / Control Section 83
- 8.3.6 Transmitter Section 84
- 8.3.7 Receiver Section 85
- 8.3.8 Battery Section 86
- 8.4 Block Diagrams 87
- 8.4.2 Controller 88
- 8.4.3 VCO 88
- 8.4.4 Transmitter 89
- 8.4.5 Receiver 89
- 8.5 Troubleshooting Charts 90
- August 30, 2002 99R85452E01-O 100
- 99R85452E01-O August 30, 2002 101
- Top Side 112
- Bottom Side 112
- 22p(R2) 56p(R1) 116
- 680K(R2) 1.5M(R1) 116
- 150K(R2)330k(R1) 116
- Glossary of Terms Glossary 127
- Glossary-2 128
- Original Codeplug 129
- Glossary-4 130
- Glossary-5 131
- Glossary-6 132
- Glossary-7 133
- Glossary-8 134
- *9985452E01* 136
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