16
201627 REV X
4 RU SSPA Chassis Operations Manual
2.1.1.2 Navigation keys
Up, Down, Left, Right and Enter keys on the right side of the front panel allow menu
navigation.
2.1.1.3 Standby Select key
Functional only 1:1 Redundancy mode. Pressing this key will put designated HPA on
standby. LED beside this key will turn on when HPA is Online. Key has no effect in
Standalone mode and for standby HPA in 1:1 mode.
2.1.1.4 Main Menu key
Provides a shortcut to the SSPA main menu.
2.1.1.5 Local/Remote key
Allows user to disable or enable local control keypad console. If SSPA is in "Remote
Only" mode, the unit will not react on any keystrokes except the "Local/Remote" key.
2.1.1.6 Mute/Unmute key
Provides easy way to change Mute state of the SSPA. Muting the amplifier via the front
panel requires 100 msec maximum (50 msec typical).
2.1.1.7 Input Sample Port (Optional) [N-type (F)]
An optional RF input sample port is located on the lower left corner of the SSPA front
panel. This provides a -10 dBc coupled sample of the RF input signal. It is a type N
female connector.
2.1.1.8 Output Sample Port [N-type (F)]
The Output RF Sample Port connector is located on the right lower corner of the HPA
front Panel. This provides a -40 dBc coupled sample of the RF output signal. A
calibration sticker is located above the type N female connector.
2.1.1.9 Removable Fan Assembly
The front panel fan assembly can be removed for maintenance. See
Section 3
,
Troubleshooting and Maintenance, for more details.
2.1.1.10 Power Toggle
The 4RU SSPA Chassis has a rocker switch on the front panel to toggle power on or
off.
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