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The RF section consists of two main components: The PMB6610 transceiver and the PMB6618
power amp.
In the transceiver the 10.368MHz clock signal SYCL is multiplied to around 1.9GHz using PLL
(Phase Locked Loop) control. The TXDA signal is used to control the modulation of this
frequency to 1.87GHz to 1.93GHz.
Received signals are demodulated, filtered and sent to the BBIC via the RXDA line.
8. CHECK PROCEDURE (BASE UNIT)
8.1. EQUIPMENT REQUIRED
8.2. INITIAL POWER TESTS
1. Turn on the 9V supply.
2. Check for approx. 90mA current on the 9V supply line.
3. Check the 3.8V supply rail at TP91. It must be 3.8V ± 0.2V.
4. Check the 2.7V supply rail at TP95. It must be 2.7V ± 0.2V.
5. Check the 6.0V supply rail at TP220. It must be 6.4V ± 0.3V.
8.3. SET THE CLOCK FREQUENCY
1. Turn on the 9V supply.
2. Enter "DEACTMAC" from the PC to switch off the RF unit.
3. Enter "CONTTX 0" to start continuous RF transmission.
4. "Enter "RDEEPROM 00 00 02" to display the clock frequency
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