microHAM SMORF, Руководство пользователя

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9.
On screen set CURRENT cables to NEW CABLE. [1]
10.
On screen set frequency [2] again to the first calibration frequency and switch the radio to this band.
Verify that the frequency on the screen and the radio match.
11. Key the radio, let output power to stabilize for a second and push the MENU button to take a sample.
You should see captured levels in the NEW CABLE row.
12.
Unkey the radio and return to the point 10, until after you sampled all bands.
13.
SAVE calibration [3].
14.
Leave the menu [4].
Now you have calibrated your new cables without loosing any single bit of accuracy. Newly calibrated values
have been automatically copied to the Sensor Cables Table and you can review them by entering that menu.
Maybe you could write them down and create your custom calibration certificate in case you will want to use new
cables with another SMΩRF without recalibration or data transfer.
In some situations you don't need to calibrate new sensor cables for all frequencies, especially if sensor is
located behind some single band power amplifier or radio (common situation on VHF or UHF bands). In this
case, whenever it is possible calibrate cables also on adjacent bands. As was mentioned, SMΩRF calculates
attenuation for other than calibration frequency by interpolating with values for adjacent calibration frequency. If
adjacent calibration points don't exist, SMΩRF will use the same values for all frequencies within a band. If
calibration on adjacent bands is for whatever reason not possible it is very important to use very exactly cut, as
thick as possible cables, having as short as possible jumpers to avoid variation in attenuation and phase from
start to the end of the band.
SENSOR 1 MENU – POWER LEVELS 100%
100% POWER LEVELS is another unique feature of the SMΩRF. As was mentioned in the BAR GRAPHS
SCALES and RANGES chapter, when TOP LED BAR is set to display power, range has one special position -
100%. It is useful feature for a quick check if the output power is at desired level because 100% power level is
always full deflection of the TOP LED BAR GRAPH.
Another use of 100% power level values is the
TUNE SCREEN, where you get visual and audio
check when 100% power is reached during tuning
procedure.
In this menu 100% power levels can be precisely
set for each band separately according to your
requirements.
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