CALAMP WIRELESS NETWORKS INC. MCUC5 User Manual
ii
2.6
O
NLINE
D
IAGNOSTICS
..................................................................................................................................... 11
2.6.1
Using an External Program for Online Diagnostics............................................................................. 11
2.6.1.1
Initialization ..................................................................................................................................................12
2.6.1.2
Online Diagnostic String Format...................................................................................................................12
2.6.2
Interpreting Diagnostic Results ............................................................................................................ 12
2.6.2.1
Short ID.........................................................................................................................................................12
2.6.2.2
Temperature...................................................................................................................................................12
2.6.2.3
B+ Voltage ....................................................................................................................................................13
2.6.2.4
Remote RSSI .................................................................................................................................................13
2.6.2.5
Local RSSI ....................................................................................................................................................13
2.6.2.6
Interpreting RSSI Readings...........................................................................................................................13
2.6.2.7
Forward Power ..............................................................................................................................................13
2.6.2.8
Interpreting Power Readings .........................................................................................................................13
2.6.2.9
Reverse Power...............................................................................................................................................14
2.6.2.10
Reverse Power and SWR...............................................................................................................................14
2.6.2.11
RX Quality Indicator .....................................................................................................................................14
2.7
O
FFLINE
D
IAGNOSTICS
.................................................................................................................................... 14
2.8
L
OW
P
OWER
O
PERATION
................................................................................................................................ 15
2.8.1
Reduced Transmit Power ...................................................................................................................... 15
2.8.2
Suspend Mode ....................................................................................................................................... 15
2.8.3
Sleep Mode............................................................................................................................................ 15
2.8.4
Remote Unit Wake-up by DTE .............................................................................................................. 15
2.9
T
RANSMITTER
T
IMEOUT
................................................................................................................................. 15
2.10
O
PTIMIZING
Y
OUR
S
YSTEM
........................................................................................................................ 16
3.
ADJUSTMENTS AND MAINTENANCE ..................................................................................................... 17
3.1
O
VERVIEW
...................................................................................................................................................... 17
3.2
I
NTENDED
A
UDIENCE
..................................................................................................................................... 17
3.3
E
QUIPMENT
R
EQUIRED
................................................................................................................................... 17
3.4
M
AINTENANCE
I
NTERVALS
............................................................................................................................. 17
3.5
L
OCATION OF
A
DJUSTMENTS AND
T
EST
P
OINTS
............................................................................................. 17
3.5.1
Logic Board, Top View ......................................................................................................................... 17
3.5.2
Logic Board, Bottom View .................................................................................................................... 18
3.5.3
Radio Module........................................................................................................................................ 18
3.6
B
ASIC
A
DJUSTMENTS
R
EQUIRED
.................................................................................................................... 18
3.6.1
Preliminary Steps .................................................................................................................................. 18
3.6.2
After Adjustments are Done .................................................................................................................. 20
3.6.3
Preparing the Unit for TCXO Adjustment............................................................................................. 20
4.
CIRCUIT DESCRIPTION .............................................................................................................................. 21
4.1
O
VERVIEW
...................................................................................................................................................... 21
4.2
I
NTENDED
A
UDIENCE
..................................................................................................................................... 21
4.3
C
IRCUIT
D
ESCRIPTION
.................................................................................................................................... 21
4.3.1
Microprocessor Circuit ......................................................................................................................... 21
4.3.2
RS232 .................................................................................................................................................... 22
4.3.3
ANALOG SECTION .............................................................................................................................. 22
4.3.4
Integra A/D and DIGIPOT.................................................................................................................... 22
4.3.5
Wake-Up Circuit ................................................................................................................................... 23
4.3.6
Power Supply ........................................................................................................................................ 23