ZHCS762F December 2011 – May 2017 TRF7963A
PRODUCTION DATA.
The level of the RF carrier at RF_IN1 and RF_IN2 inputs is measured. THe operating range is 300 mVP to 2.1 VP (the step size is 300 mV). The two values are reported in the RSSI Levels register (0x0F). The command is intended for diagnostic purposes to set correct RF_IN levels. Optimum RFIN input level is approximately 1.6 VP or code 5 to 6. The nominal relationship between the RF peak level and RSSI code is described in Table 6-13 and in Section 6.7.1.1.
NOTE
If the command is executed immediately after power-up and before any communication with tag was performed, the command must be preceded by the Enable RX command. The Check RF commands require full operation, so the receiver must be activated by enable receive or by a normal tag communication for the Check RF command to work properly.
RF_IN1 (mVP): | 300 | 600 | 900 | 1200 | 1500 | 1800 | 2100 |
Decimal Code: | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
Binary Code: | 001 | 010 | 011 | 001 | 101 | 011 | 111 |