Maintenance Handbook

SBS-800 Series Operator & Planned Maintenance Handbook
Chapter 7: Local Control
KH-1601-2 Issue 6
Page 54 of 80
7.2.4.2 TX Power
Control Menu
Range
Mode
Tx
Power
Tx Freq.
Mute
Rain
Sea
Int.
Rejection
Sweep
RPM
Exit
The output power of the SharpEye
TM
transceiver can be switched between High (default) and Low.
High power: The SharpEye
TM
transceiver transmits at full power; this is the recommended default
setting.
Low power: Low power is used in close waters or in a high clutter environment where a high
output power may produce excessive unwanted reflections from buildings, bridges
and vessels.
The transceiver will utilise the same frame pattern for the range mode but with the
output power reduced from the nominal 300W (X-Band) or 200W (S-Band).
CAUTION
As a result of reduced output power, range performance will be reduced and the
system will not meet the expected operational detection performance because the
STC levels are not suitable.
When low power is selected, a low power status is automatically generated to advise
the operator that the system is operating at a reduced output power.
Where the SharpEye
TM
detects a VSWR or a high temperature within the transceiver
the system automatically switches to low power mode and generates system alarms.
7.2.4.3 TX Frequency
Control Menu
Range
Mode
Tx
Power
Tx
Freq.
Mute
Rain
Sea
Int.
Rejection
Sweep
RPM
Exit
The frequency/frequency pair number of the SharpEye
TM
transceiver can be selected. This may
prevent interference from other transceivers to obtain the best picture quality.
The frequency bands shown in the Tx Freq. menu are selected during setting to work of the system.
The frequencies available for selection depends on the system type i.e. X or S-Band, Frequency
Diversity (FD) or Non Frequency Diversity (Non-FD) as follows (please refer to KSD-4750 for
additional information available from Kelvin Hughes Ltd upon request):
SBS-800 type
Frequency No. Available
X or S-Band
SBS-800-1
12 to 25 (non-frequency diversity)
X-Band
9.21 to 9.49GHz
SBS-800-2
SBS-800-3
12 to 21 (frequency diversity pairs)
X-Band
9.21 to 9.49GHz
or
9.20 to 9.5GHz
SBS-800-51
1 to 8 (non-frequency diversity)
S-Band 2.92 to 3.08GHz