Atten Gratten GA1483, Руководство пользователя

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OFF(RF (off) into RF ON (RF on), and at the moment, the RF signal will be
output at the lowest power electric level of the RF OUTPUT connector.
4. Press the AMPT hard function key, and input −20 dBm.
It will change the amplitude into -20dBm. At the moment, new −20dBmRF
output power will appear in the AMPLITUDE region and the action entry region
of the display screen.
You can use the up and down arrow keys and the knobs to change the
amplitude before you press another function key on the front panel.
2-2-1-4 Set amplitude reference and amplitude offset
By the following procedures, the RF output power is set as amplitude reference,
and all the other amplitude parameters are relative to the amplitude reference. The
amplitude originally displayed on the display screen will be 0dB, namely the value
formed by using the power output by the hard function key to subtract the reference
power. Although the display content will be changed, the output power will not be
changed. All the subsequent frequency changes will be displayed as an increment
value or a decrement value relative to 0dB. The detailed operation steps are as
follows:
1. Press PRESET .
2. Press the AMPT hard function key, and input −20 dBm.
3. Press the More(1of2) soft function key to enter the next page, and press
the Ampl Ref Set soft function key.
It will activate the amplitude reference mode and set the current output power
(−20dBm) as a reference value. The AMPLITUDE region displays 0.00dB that
is a result formed by using the power (20dBm) output by the hard function key
to subtract the reference value (−20dBm). The REF indicator is at an activated
status, and the Ampl Ref Off On soft function key is switched to On.
4. Press the RF On/Off hard function key.