USX2 Просмотр технического описания (PDF) - Radiometrix Ltd
Номер в каталоге
Компоненты Описание
производитель
USX2 Datasheet PDF : 9 Pages
| |||
USX2 serial interface details (version 4): PRELIMINARY
The USX2 user interface is accessed through the four parallel pins (P0/serial through P3).
It has four operating modes:
1. Parallel: Frequency of operation is selected as one of 16 (chans 0-15), by means of a 4 bit inverted value
applied to P0-P3. The P0 pin will also respond to a LOCKSERIALMODE datastream (inverted rs232, 9600
baud), which will cause the radio to enter serial mode. In parallel mode, the IDENT command string is still
decoded, but the unit remains in parallel mode.
2. Serial: Frequency of operation, radio set up, power output and various other parameters are controlled by
command strings sent to P0. Pin P3 functions as a 'readback' port while P1,2 are not used in this mode.
In this mode, decimal values are used (to simplify direct manual programming via a terminal)
Commands include :
:
? or /
<backspace>
<cr>
empty command buffer
read back buffer contents
delete last character
process buffer
PARALLEL
DUMP
MODEM
NOMODEM
return to the basic, parallel mode (and turn modem off)
read back contents of eeprom (output on P3)
activate 1200 baud modem
#
de-activate 1200 baud modem
#
DEFCH ccc
DEFPOW pp
set default channel
set default tx power
(non-volatile) #
(non-voltatile) #
CHAN ccc
POWER pp
RSSI
jump to channel
select tx power
single read of RSSI
(volatile)
(volatile)
(output on P3)
SHORT
enter short command mode
#
(The following commands are used to set up the radio operating characteristics, and should be viewed with
caution. Especially the CALPOWER command, which initiates a multiple write operation to the power
calibration table )
NDIV
RDIV
nnnnn
rrrrr
force N divider value (volatile)
force R divider value (volatile)
RLOAD rrrrr
Set R divider value
#
OFFSET ooooo
Set RX offset
#
LOAD aa nnnnn
Set N values for first 16 channels
#
START nnnnn
Set N value for ch 16
#
STEP i
Set increment for table
#
LIMIT ccc
Set highest permitted channel number #
SETPOW eee
CALPOWER (etc)
Set maximum power output (100mW)
(see factory procedures for more details)
TEST
Generate a 250Hz test modulation
(only fuctions in TX mode, cancelled by sending a <cr> byte)
IDENT
Readback a single byte, depending on current mode:
Parallel:
P
Serial
S
Short
1
Modem
M
(Channels 0-15 are individually programmed by the LOAD operation. Channels 16-127 are a consecutive
table, using the START value as a start point (=channel 16) and increasing the N value by STEP with each
increase in channel number)
Radiometrix Ltd
USX2 Data Sheet
page 4
Share Link: 