Satellite Upconverter Manual
WORK Microwave
22 / 49
V151207
3.5.2.5 IF FREQUENCY (Option)
The item “IF FREQUENCY” in the “CONV CFG” submenu allows the configuration of
the IF output center
fre
quency of the Upconverter. The parameter values which can be selected are: “70 MHz” or “140
MHz”.
Note:
This menu item is only available if the option IF-Frequency is installed.
3.5.2.6 EQUALIZATION
The item “EQUALIZATION" in the “CONV CFG” submenu allows the configuration of the gain slope equa
lizer
within the converter. This equalizer approximates a linear gain slope correction. The unit of the equalization
input is dB/GHz. The range of this parameter is
−
64 dB/GHz to +64 dB/GHz.
With dual channel devices, this menu point can be found in the “CHANNEL x CFG” submenu for each cha
n-
nel.
3.5.2.7 REFERENCE SOURCE
T
he item “REFERENCE SOURCE” in the “CONV CFG” submenu allows the configuration and the monitoring
of the reference source within the unit. The parameter values which can be selected are: “INTERNAL”, “E
X-
TERNAL”, “AUTO”.
The Upconverter is equipped with a 10
MHz OCXO as internal reference. In the mode “INTERNAL” this
OCXO is used as refer
ence. In mode “EXTERNAL” an external reference connected to the BNC connector
“Ref In” at the rear panel of the unit is used to phase lock the 10 MHz internal reference. This
external signal
can either be a 5 MHz or a 10 MHz reference signal, which is automatically detected. If this signal is missing
or not appropriate an alarm is generated.
In the mode “AUTO” the unit monitors the power level of the external reference. If the
power level is above
−
3 dBm, the converter is switched to the external reference mode. When the power level is lower than
−
6 dBm, the converter is switched back to the internal reference.
3.5.3 SYSTEM CFG
The item “SYSTEM CFG” in the main menu allows access to the configuration and
the monitoring of general
settings of the Converter. This menu point is not shown if the REMOTE/LOCAL feature is enabled and if the
unit is in REMOTE mode. After this menu item was selected with the left or right arrow keys the items of the
submenu belong
ing to this main menu item can be activated by pressing the “E
n
ter” key. The items of this
submenu are explained in the following:
3.5.3.1 LOAD INSTRUMENT STATE
The item “LOAD INSTRUMENT STATE” in the “SYSTEM CFG” submenu allows to activate a stored config
u-
ration again. 16 configuration settings can be saved in instrument states and loaded again. After pressing the
“ENTER” key an instrument state (00…15) can be selected by the left/right/up/down cursor keys. By pressing
“ENTER” again this instrument state is loaded; by pressing “CANCEL” the operation is aborted. In the Auto
Save mode the current parameters are stored in instrument state 00. After power up the instrument state 00
will be loaded automatically.
3.5.3.2 SAVE INSTRUMENT STATE
The item “SAVE INSTRUMENT STATE” in the “SYSTEM CFG” submenu allows to save an active configur
a-
tion. 16 configuration settings can be saved in instrument states. After pressing the “ENTER” key an instr
u-
ment state (00...15) can be selected by the left/right/up/down cursor keys. By pressing “ENTER” again the
current operational settings are loaded into this instrument state; by pressing “CANCEL” the operation is
aborted.
In the Auto Save mode the current parameters are stored in instrument state 00.
3.5.3.3 AUTO SAVE
The item “AUTO SAVE” in the “SYSTEM
CFG” submenu allows to activate the automatic saving of an a
ctive
configuration. The parameter values which can be selected are: “ON” or “OFF”.
