User manual

Table Of Contents
Section 7: System Description 7-3
Moseley SL9003Q 602-12016 Revision G
The SL9003Q TX is a modular digital radio transmitter system that operates in multiple RF
bands (160-240, 330-512, 800-960, 1340-1520, and 1650-1700 MHz) and provides simplex
data transmission up to 2.048 Mbps increments in 8 kbps steps. The block diagram in Figure 7-
1 shows operational block partitions that also represent the physical partitions within the system.
All modules (excluding the Front Panel) are interconnected via the backplane which traverses
the entire width of the unit. The backplane contains the various communication buses as well
as the PA (Power Amplifier) control and redundant transfer circuitry. The power supply levels
and status are monitored on the backplane and the NMS/CPU card processes the data.
The NMS/CPU card incorporates microprocessor and FPGA logic to configure and monitor the
overall operation of the system via front panel controls, LCD screen menus, status LED's and
the bar graph display. Module settings are loaded into the installed cards and power-up default
settings are stored in non-volatile memory. LCD screen menu software is uploaded into
memory, providing field upgrade capability. A Windows-based PC interface is available for
connection at the rear panel DATA port.