Marti Electronics SRPT-30 User Manual page 35

It would be a good idea to test the stored channel(s) by changing the frequency to some other frequency and then
recalling the stored channel(s).
Control Switch Settings – SRPT-40A Only
Control Switch Settings enable or disable important controls used in the SRPT-40A. These control settings include
the following:
Power Adjust Pot
HiHi VSWR Foldback
Reverse Power Calibration
Forward Power Calibration
HiHi Temperature Shutdown
Direct Frequency Change
Channel Frequency Change
Refer to TABLE (1) - Control Switch Settings Command for disabling or enabling the desired controls. Remove
the top cover. Set the internal dip-switch S1 switches and the FREQUENCY SELECT pushwheel decimals as outlined
in Table (1). The entries in BOLD are default settings from the factory
When all FREQUENCY SELECT pushwheel decimals have been set to their required values that correspond to the
desired control switch setting, you must send the command by pressing the EXECUTE pushbutton down and then
releasing. The internal controller will enable or disable the control. Set the internal dip-switch S1 back to its normal
position with switch 1 and 2 "ON" and switch 3 and 4 "OFF". Re-install top cover.
Following is a description of the control settings:
Power Adjust Pot – The default for this setting is "enabled" which allows the user to change the power from almost
0 Watts to the maximum RF output power setting via the front panel POWER ADJUST pot. Refer to the Maximum
Power Setting paragraph in the CALIBRATION AND ADJUSTMENTS section of this manual for information on
how to set the maximum power. If this user "disables" this setting, then the RF output power will maintain where last set
and tuning of the POWER ADJUST pot will have no effect.
HiHi VSWR Foldback – The default for this setting is "enabled". This means when a VSWR is detected greater than
4, the power will limit to one-half the maximum power setting. If VSWR foldback is "disabled", then the forward RF
power will not try to foldback, even when the controller detects a VSWR of greater than 4. The HIGH VSWR LED will
still flash however. For maintaining long life from the power amplifier, it is not recommended to disable VSWR
Foldback.
Reverse Power Calibration – The default setting for this setting is "disabled". This setting should only be "enabled"
during calibration (see the Reverse Power Calibration paragraph in the CALIBRATION AND ADJUSTMENTS
section).
Forward Power Calibration – The default setting for this setting is "disabled". This setting should only be
"enabled" during calibration (see the Forward Power Calibration paragraph in the CALIBRATION AND
ADJUSTMENTS section).
HiHi Temperature Shutdown – The default for this setting is "enabled". See High Temp LED paragraph in the
CONTROL & CONNECTOR FUNCTIONS section for complete description. When enabled, the power amplifier
will shut down when the PA temp reaches 100 degrees C. If "disabled", then the power amplifier will not shutdown due
to HiHi temperature but the HIGH TEMP LED will still flash. Again, for maintaining long life from the power amplifier,
it is not recommended to disable High Temperature Shutdown.
Direct Frequency Change – The default for this setting is "enabled" to be able to change the output frequency
direct. If "disabled", then attempting to change the output frequency will be ignored by the internal controller. This
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