User's Manual

Provisioning
48 SkyZhone 45 Installation Guide
DR
A
FT
Setting the transmit signal strength threshold
This command programs the KTSSI byte in the ODU which provides a
comparison limit to the transmit power seen within the ODU. If the
transmitted power exceeds this value, the ODU CPU will automatically turn
off the power amplifier.
The following example sets the transmit comparison level at the proper
setting for a 4 foot antenna:
@ C T 0 0 0 0 0 E ! <Enter>
The first three characters, @ C T, begin the command string for the
compare transmit signal strength command.
The fourth character, 0, defines the unit number, which is always zero.
The fifth and sixth characters, y y, set the attenuation value (see
Table 16).
The last two keystrokes of the command are ! <Enter>.
Setting the amplifiers ON
This command enables the power to the receive and transmit amplifiers,
allowing the link to operate. After this command is given the ODU will begin
transmitting, and the receiver will look for received signal.
0D -24 dB -76 dBm -72 dBm -68 dBm
0E -28 dB -78 dBm -74 dBm -70 dBm
0F -30 dB -80 dBm -76 dBm -72 dBm
10 -32 dB -82 dBm -78 dBm -74dBm
15 -42 dB Below receive
threshold
-88 dBm (receive
sensitivity for 10
-8
BER)
-84 dBm
1F
(maximum)
-62 dB Below receive
threshold
Below receive
threshold
Below receive
threshold
Table 15: Receive attenuation settings (Continued)
Attenuator setting
(HEX)
Attenuation
inserted into
receive path
RSL at receiver
using 2’ antenna
(29 dB gain)
RSL at receiver
using 4’ antenna
(33 dB gain)
RSL at receiver
using 6’ antenna
(37 dB gain)
Table 16: Transmit threshold settings
2 ft antenna 4 ft antenna 6 ft antenna
HEX Setting 94 85 7E