RI-STU-MRD2: Microreader RI-STU-MRD2 change the transmitter frequency to 125kHz

Morgan Berglund

Prodigy 10 points

Part Number: RI-STU-MRD2

Hi i have a few questions regarding frequency change on Microreader RI-STU-MRD2

In the document scbu049: 6.4.3.26 Execute C-Trimming (Command 0x43)

This command starts a C-trimming sequence to adjust the transponder resonance frequency to a given

target frequency. Because this procedure is device-dependent, the additional specification of the device is

necessary. The target frequency must be specified in Hertz. For example, a target frequency of 02 0C 38

equals 134.2 kHz.

This command does not work

What I wish to do is to change the transmitter frequency to 125kHz

Is the asked frequency out of range for the product perhaps im telling it to go for 125kHz

over 3 years ago

0 Morgan Berglund over 3 years ago

Prodigy 10 points

Tried to use this 0x01, 0x06, 0x83, 0x43, 0x03, 0x01, 0xE8, 0x48, 0x64 to change to 125kHz

0 Morgan Berglund over 3 years ago in reply to Morgan Berglund

Prodigy 10 points

That does not work the frequency stays the same

0 Andreas Mueller over 3 years ago

TI__Mastermind 24460 points

Hello Morgan,

the C-Trimming (Command 0x43) is intended to trim the TI's 134.2 kHz HDX transponder, and not the reader. If the intention is to build a 125 kHz ASK FDX reader, then this is not supported by the Microreader RI-STU-MRD2.

Best regards,

Andreas.

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RI-STU-MRD2: Microreader RI-STU-MRD2 change the transmitter frequency to 125kHz