OpenBTS: E110 UHD burn EEPROM RFX Board

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RFX - Mod

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Older RFX boards require modifications to use the motherboard oscillator.

If this is the case, UHD will print a warning about the modification.

Please follow the modification procedures below:

• • Step 1: Disable the daughterboard clocks**

Move R64 to R84, Move R142 to R153

• • Step 2: Connect the motherboard blocks**

Move R35 to R36, Move R117 to R115

These are all 0-ohm, so if you lose one, just short across the appropriate pads

• • Step 3: Burn the appropriate daughterboard id into the EEPROM**

With the daughterboard plugged-in, run the following commands:

cd <prefix>/share/uhd/utils
./usrp_burn_db_eeprom --id=<rx_id> --unit=RX --args=<args> --slot=<slot>
./usrp_burn_db_eeprom --id=<tx_id> --unit=TX --args=<args> --slot=<slot>

• <rx_id> choose the appropriate RX ID for your daughterboard

 * **RFX400:** 0x0024
 * **RFX900:** 0x0025
 * **RFX1800:** 0x0034
 * **RFX1200:** 0x0026
 * **RFX2400:** 0x0027

• <tx_id> choose the appropriate TX ID for your daughterboard

 * **RFX400:** 0x0028
 * **RFX900:** 0x0029
 * **RFX1800:** 0x0035
 * **RFX1200:** 0x002a
 * **RFX2400:** 0x002b

• <args> are device address arguments (optional if only one USRP is on your machine)
• <slot> is the name of the daughterboard slot (optional if the USRP has only one slot)