Technical Manual

Table Of Contents

Frame Types

unsigned int counter3; /* Pulse Counter I/O D input */

unsigned char battery;

unsigned int analog_data[9];

} data_frame;

DESCRIPTION

This frame will be sent back by the device as an answer to the Request frame.

• RF_levelIn is the left zero (it is a placeholder and will be filled by the first de-

vice receiving the frame).

• RF_levelOut is the RF level measured by the device on the Request frame.

• slot_timeStamp is the actual time stamp on the data sent.

• digibyte represents the result of OR-ing the following bits:

— SC represents the battery charge switch’ status.

— DIG0 to DIG7 are the I/O pins on the I/O connectors. Note that only the

first 4 DIGs are usable (there are only four I/O connectors on the A733).

Note: For additional info on the bits in the digibyte, check the hardware section of

this manual.

• counter0 to counter3 are the values of the pulse counters.

• battery is the value of the main power supply; its actual value can be com-

puted using the equation:

• analog_data[9] is an array of 8 unisgned integers that represents the result of

packing the 12 12-bit values. These are the values returned by the internal

A/D converter from the respective I/O connectors (see the hardware section

for more details). The packing mechanism is depicted below: