ThingMagic M5e-Compact - Manual (Page 188)

FCC Test Commands
188 Command Set
Set Operating Frequency (C1h)
The Set Operating Frequency command takes a 32-bit frequency value, expressed in
kHz. For instance, to set the frequency to 915.26MHz, send the data value 915260
(0x000D F73C) to the reader.
Transmit CW Signal (C3h)
The Transmit CW Signal command turns the Continuous Wave (CW) signal On or Off or
enables a PRBS signal. Sending 0x00 turns Off the CW signal; sending 0x01 turns On
the CW signal; Sending 0x02 turns on a PRBS signal. The CW signal is transmitted at the
last used power level.
This example shuts off CW:
Some regulatory testing requires a PRBS (Pseudo-Random Bit Sequence) signal to
simulate data transmission. To send a PRBS signal, along with sending CW=0x02, the
Length field must be changed to 0x03. This indicates PRBS will be used and an extra 2
byte Timeout field must be added. When this PRBS mode is used the CW signal is on
until the timeout expires, during that period the reader does not respond to commands.
The following example generates a PRBS CW signal for 256 ms, 100% duty
cycle:
FF 04 C1 00 0D F7 3C F3 B7
SOH Length OpCode Freq to Set CRC
FF 01 C3 00 1F BD
SOH Length OpCode CW CRC
FF 03 C3 02 01 00 01 00
SOH Length OpCode CW/PRBS Timeout CRC