Release 1
DAMS-NT DigiRIT Operation Manual
12/14/2012
Microcom Design, Inc.
8
stream from the alternate satellite means that there is no single point of failure anywhere in the
LRIT DCS transmission/reception chain, including the spacecraft itself. Since NOAA has
numerous layers of redundancy in both the DCS and LRIT systems, by receiving the LRIT signal
from both spacecrafts means no DCS message that can be received will be lost due to a single
failure in the user’s ground system.
1.3.1.
DigiRIT Receiver Overview
The DigiRIT receiver is housed in a standard 19” rack mount enclosure. The height is 2RU and
the depth is approximately 14.5”. All primary connections are provided on the rear panel, while
various test connections and controls are provided on the front panel.
Figure 3 shows the front panel of the DigiRIT, while Figure 4 shows the DigiRIT’s rear panel.
As the figures below indicate, numerous connections for both operation and test are provided.
The use and functionality of these connections is detailed in Section 2 of this manual.
DIGITAL LRIT HRIT RECEIVER
DAMS-NT DigiRIT
SIGNAL
ACQUIRED
SELECT
SETUP
CONNECTED
CLIENT
140 MHz
TEST
70 MHz
TEST
Figure 3: DigiRIT Receiver Front Panel
Figure 4: DigiRIT Receiver Rear Panel
Referring to the above figures, provided below is a list of the DigiRIT’s connection points,
controls, and indicators.
1.
Status Display N/A
2.
RS-232 Test Port
SUB-D-9F
3.
LED Status Indicators
N/A
4.
DigiRIT Setup Pushbuttons
N/A