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7.2. RF SECTION
7.2.1. BLOCK DIAGRAM RF SECTION (HANDSET)
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. PREPARATION
8.1.1. EQUIPMENT REQUIRED
- DECT tester: Romde & Schwarz, CMD 60 is recommended.
- Frequency counter: it must be precise to be able to measure 1Hz
(precision;±4ppm).
Hewlett Packard, 53131A is recommended.
- DC power: it must be able to output at least 1A current under 9V.
Fig. 28
29
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