User's Manual

044-05156 Rev C 34
DLNA Front Panel
4.7.3 Transmit Path Overview
The transmit path receives amplified RF signals from the MCR21929-1-2 amplifier subrack. The amplified signals
are filtered and duplexed with the receive signals and presented to the antenna port. The transmit filter provides
105 dB of isolation in the receive band between the transmit and antenna ports.
4.7.4 DLNA Alarms
VSWR and LNA alarms for the DLNA are given on the front panel and sent via an alarm bus to the SIM.
Close-up View of DLNA Front Panel
Alarm indications for the DLNA are as follows:
VSWR LED
Green (ON) Normal
Red (ON) Alarm State 1
Yellow (ON) Alarm State 2
Green/Red (OFF) Alarm State 3
Fast Flash Test Mode
LNA LED
Green (ON) Normal
Green (OFF) Loss of Supply voltage