Comtech EF Data CSAT-6070 - Manual (Page 60)

/50 Watt C-Band Transceiver Revision 0
System Operation MN/CSAT607050.IOM
Adjust’ which can be varied from 0.0 to 1.0 in 0.1 steps. 0.0 is the default
setting and also is the value used when the channel flatness is tuned and
tested in the factory. 1.0 corresponds to approximately 2dB of positive
slope.
• The transmit channel slope can be varied for approximately 2dB of
positive slope. The parameter for controlling this is the ‘Up Slope Adjust’
which can be varied from 0.0 to 1.0 in 0.1 steps. 0.0 is the default setting
and also is the value used when the channel flatness is tuned and tested in
the factory. 1.0 corresponds to approximately 2dB of positive slope.
Associated Remote Command(s): DSA= , USA=
Example(s): DSA=0.0 , USA=0.8
3.3.9 R
EFERENCE
F
REQUENCY
A
DJUST
A manual, fine adjustment of the internal 10MHz reference frequency is provided
as a user controllable parameter. This parameter can be varied within the range
000 to 255, with the factory default setting at 087. Varying this parameter from
000 to 255 will result in a change of approximately 6.5kHz and 4.0kHz at the RF
and IF output ports respectively.
Associated Remote Command(s):
REF=
Example(s): REF=087
3.3.10 E
XTERNAL
R
EFERENCE
F
AULT
L
OGIC
The CSAT allows the user to select whether or not the summary fault relay is
activated if the internal 10MHz reference loses lock with the external reference
attached to ‘EXTERNAL REF IN port’ J4.
(The factory default is 0)
Associated Remote Command(s):
XRF=
Example(s): XRF=0
3.3.11 C
OLD
S
TART
F
UNCTION
The CSAT provides an optional ‘Cold Start’ feature that will ensure that the
internal 10MHz reference signal is at a stable temperature prior to allowing the
RF and IF outputs to be turned ON. A fixed cold start interval of 15 minutes is
used.
• If ‘Cold Start’ is ON when the CSAT is powered ON, the IF and RF
outputs will remain muted for 15 minutes even if all the conditions defined
in 3.2.5 are satisfied. At the end of the 15 minute interval, the RF and IF
output will automatically be turned ON if the conditions of 3.2.5 are met.
3-6