ARMA-K100-CRM
9
2. GENERAL INFORMATION
2.1 INTRODUCTION
This manual contains information required to install and operate the 100 W, Ku-Band Rack-mount
Solid State Power Amplifier model ARMA-K100-CRM.
2.2 DESCRIPTION
The ARMA-K100-CRM is a Ku-Band 100 W solid-state power amplifier (SSPA) intended for
rack-mount (indoor) installation. It incorporates a DC main power supply and a forced air cooling
system. The SSPA product outline is shown in
Figure 1
at page 12
& Figure 2
at page 13.
A
block diagram for one unit is shown in
Figure 3
at page 14.
A redundant system block diagram is
shown in
Figure 4
at page 15. Back
panel connectors are shown in
Figure 5
at page 22. Full
monitor and control capabilities are available from either the front panel or with the RS-485 serial
interface.
2.2.1 P
OWER
S
UPPLY
The main power supply provides a single output, DC high current to the HPA (High Power
Amplifier), the secondary power supply and a filtered, low current supply for operation of the
fans. The secondary power supply has multiple outputs for operation of the Monitor and Control
Assembly and the front panel display. The main power supply is configured for operation from
90-264 V AC. The fans are configured for 48V DC.
2.2.2 HPA A
SSEMBLY
The HPA Assembly amplifies the RF input signal to a level sufficient for transmission. Integral
to this module are low noise and power amplifier sections as well as variable attenuation sections
that are used for temperature compensation and gain control. Other functionality includes
internal power conditioning, temperature monitoring & high temperature shutdown.
2.2.3 M
ONITOR AND
C
ONTROL
A
SSEMBLY
The MCA (Monitor and Control Assembly) monitors all the important operating parameters of
the system, and communicates externally via serial and discrete interfaces as well as the front
panel controls and display.
