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User Reference and Installation Guide
3-30
© 2006 Microwave Data Systems Inc. All Rights Reserved.
MDS FOUR.9 Series
05-4561A01, Rev. A
3.8.5.5
CLI Access via Serial Port
The CLI for configuring/monitoring the SDIDU
TM
may be accessed via the front-panel serial port.
187H 184H
Table 3-3 shows the pinout for constructing a DB-9 to HD-15 cable.
Table 3-3: Serial Cable Pinout
DB-9 Pin
HDB-15 Pin
2
2
3
3
5
5
The serial port parameters are show in
188H185H
Table 3-4.
Table 3-4: Serial Port Parameters
Parameter
Value
Speed
38400
Bits
8
Stop-Bits
1
Parity
None
Flow-Control
None
After powering-on the SDIDU
TM
, the CLI may be accessed by connecting the serial cable
between the PC and the SDIDU
TM
, launching and configuring a terminal program (e.g.
HyperTerminal) and pressing the enter key. You will be prompted for a username and password,
which are supplied at the end of this guide.
3.8.6
ODU Antenna Alignment
To use the built-in tuning of the ODU antenna, a complete link is required, with both ends of the
link roughly pointed at each other, and transmitting.
Once the links are roughly pointed, connect the voltmeter to the RSSI (Receive Signal Strength
Indication) BNC connector seen on the ODU. This mode outputs 0 to +3 Volts. Adjust the
antenna for maximum voltage. The RSSI voltage is linearly calibrated from 2.5 Volts for maximum
RSL (received signal level) at –20 dBm to 0Volts for minimum RSL at -90 dBm. This mapping
characteristic is plotted below in
189H 186H
Figure 3-13.
Содержание FOUR.9 Series
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