DG-OHM
UNAOHM Srl Rev. 4.0
12
To modify the increase step: press and hold the
button, position the cursor on the
digit to be modified with the
buttons, confirm the step to be modified with the OK
button, modify the digit using the
buttons.
3.
Satellite polarity:
single press the
button to activate or deactivate output voltage
and make the Vcc camp active in the status bar, which will flash.
Use the
increase and decrease keys to select the 4 polarities:
VL vertical low (13Volt)
HL horizontal low (18 Volt)
VH vertical high ( 22KHz).
HH horizontal high ( 22KHz).
(ATTENTION: in terrestrial, voltages 0Volt, 13Volt, 18Volt will be enabled to power external
devices such as pole control units, etc.)
4.
Symbol rate
: from the digital screen, single click on the
button to activate the side
menu. Select the PARAMETERS box. Using the
(up, down) buttons, press
;
the cursor will move to SYMB. R.. Subsequently, press
to move the cursor to the
right on the numerical value of the symbol rate and, using the keyboard which has
converted into a numerical keypad, you can enter the value of the new symbol rate.
7.0 ATTENUATOR
If the signals measured by the MARKER exceed or are less than the values detected by the
instrument in its current conditions, this situation will be signalled with the appearance of a >
(greater than) or < (less than) symbol, indicating the need to insert or remove attenuation cells
allow correct reading of the signal level or power.
It is possible to manually act on attenuators using the following keys:
1.
: ATT+ : will add an attenuation cells at steps of 10 db
2.
: ATT+ : will remove attenuation cells at steps of 10 db
It is, however, possible to use the AUTOMATIC ATTENUATOR. This activation will enable
the instrument to automatically calculate the attenuation cell to measure level or power. To
activate, press and hold the
button from spectrum analyzer mode.
The attenuation cell value will be indicated in the status bar under ATT.
