CALAMP WIRELESS NETWORKS INC. MCUC5 Manual De Usuario

When the Integra-T is powered on, it will at-
tempt to establish a link with the RSS/RDS and
select its output mode as follows:

1.  If RTS is not exerted on the setup port, the

Integra-T will immediately switch to ASCII
mode.

2.  If RTS is exerted on the setup port, the Inte-

gra-T will send an initialization message in
RSS/RDS mode and wait for the proper re-
sponse form the RSS or RDS.

3.  If there is no response, the Integra-T will

switch to ASCII mode.

The cleanest interface for a user program exists
if the program initializes the PC serial port with
RTS false. This will disable the RSS/RDS mode
and only ASCII data will be output from the
port.

In ASCII output mode the setup port will output
a one line diagnostic string each time the unit
receives a transmission from another unit. No
other data will be output. The string consists of
a number of comma–delimited fields terminated
by a carriage return. Each field is a constant
length (with leading zeros if required), regard-
less of the value contained in the field, but the
fields are not all the same length.

The field definitions are shown in the table be-
low.

Short ID

4

1 – 254

Temperature

3

Signed value in 

°

C

B+

4

Tenths of a volt from 6.0
to 18.8V

Remote RSSI

4

Signal strength received
by remote station

Local RSSI

4

Signal strength for this
remote as received by
local station

FWD power

4

Tenths of a watt.

Rev power

1

0 = good
1 = poor

RX quality

3

Number of good data
blocks received in the
last 15.

3

Number of total data
blocks detected, maxi-
mum 15.

Note: A data block is 

about

 26 bytes long.

A typical diagnostic string, with its interpreta-
tion, is shown below:

0003, +28, 13.1, -093, -088, 4.7, 1, 015, 015

Remote station # 3 reports that:

•

  its internal case temperature is +28°C,

•

  supply voltage is 13.1 VDC,

•

  it is receiving a signal of -93 dBm from the

master,

•

  the master is receiving a signal of -88 dBm

from station 003,

•

  the forward power is 4.7 watts,

•

  the reflected power is OK,

•

  15 of the last 15 data blocks were received

correctly.

 

Interpretation of the diagnostic results is similar
for both online and offline diagnostics. Where
differences exist, they will be noted in the text.
For simplicity, we continue to assume that diag-
nostics are being collected at the master station.

 

Online diagnostic data is identified by the Short
ID of the unit. Users should make sure that all
units in a communicating group have unique
Short IDs.

 

Internal case temperature of sending unit. This
is a 3 digit signed value in degrees C. This value
should remain within the limits of -30ºC to
+60ºC.