User's Manual

New parameters and commands
6-3
The functionality of the Tag Qualifier TQ21 can be configured by parameters. These parameters
can be set from a PC connected through a standard serial interface RS232 to the TQ21. The
parameters and commands supported by TQ21 are quite similar with those listed in the Reference
Guide for System S21 with the following modifications.
New parameters and commands
Parameter: DFA
Type: Bit (Read/Write)
Range: Y/N
Default value: Y
Description: Enable (Y) or disable (N) the transmission of the flags using S21/S96 format.
When enabled, TQ21 transmits the received messages using the S21/S96
format for the flags field (including the ReceivedID information). If disabled,
TQ21 transmits the received messages using S95 format for the flags field.
Parameter: DFI
Type: Bit (Read/Write)
Range: Y/N
Default value: Y
Description: Enable (Y) or disable (N) the frequency measurement for the UHF received
signal. When enabled, TQ21 transmits together with the received messages
data about the carrier frequency and frequency deviation of the received UHF
signal (CF and DF). If disabled, TQ21 transmits the received messages using
the format defined by DFA parameter.
Parameters and commands disabled
Considering the S95 as a reference, the parameters PTA, PTT, PTV and RSM were disabled for
TQ21.
Firmware
For the command IVN, TQ21 will display its firmware version TQ21 v3.01.06. or a higher version.