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Operations Manual, HPA2, Compact Outdoor SSPA 205486 REV F 81
9.0 Block Up Converter Overview
The Compact Outdoor SSPA is available with various L-Band up converter options. The
primary up converter option is the Zero dBm Block Up Converter, ZBUC. ZBUC is offered in
four C-Band configurations, two Ku-Band options, and one X-Band model. The ZBUC is not
available in S-Band units. See Table 9-1 for specifications for the respective models. The
ZBUC offers ultra low phase noise for applications where phase noise is an overriding factor.
The type of BUC housed within your Compact Outdoor SSPA is indicated by its model
number, as shown in Figure 9-1. The example in Figure 9-1 shows a 140W C-Band Compact
Outdoor SSPA with Internal Reference ZBUC. For a full description of this configurator, refer
to the Compact Outdoor SSPA specification sheet (205485).
The block up converters are high performance frequency translation devices which provide
excellent phase noise and spurious performance. The ZBUC also supports FSK
communications for remote M&C capability. The FSK is a 650 KHz signal that is multiplexed
onto the L-Band input of the unit.
The ZBUC utilizes Paradise Datacom’s proprietary “Smart Reference Technology”. Smart
Reference Technology allows the system user to change reference frequency and power
level or choose internal or external reference without requiring any system configuration. An
internal BUC adds about 1.5 pounds to the overall weight of the Compact Outdoor unit.
The schematic of Figure 9-2 shows the electrical position of the block up converter. It is
powered from a +15 VDC supply available on the Fan Boost Converter board assembly. The
Block Up Converter is simply cascaded with the SSPA at the input of the amplifier.
C
2
1 4 0 A C M X X X X
HPA
Block Up Converter
B = BUC (Custom)
M = Internal Reference ZBUC
P = External Reference ZBUC
X = None
System Configuration
Configuration Modifiers
Power Level (Watts)
Band
Frequency Sub Band
Compact Outdoor SSPA
Figure 9-1: Configurator, Compact Outdoor SSPA, BUC Options
Section 9: L-Band Operation