Nautel GV3.5, Operation & Maintenance Manual, Page: 80 / 251

GV5/GV3.5 OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
VERSION 0.2 2014-07-23 PAGE 3.2.63
Understanding the Preset Tabs
The
Presets
page consists of tabs across the top with functions on the left-side and parameters
displayed in the center and right-side of the window. A separate display appears for each of the
following tabs:
General
- (
see Figure 3.2.43 on page 3.2.60 )

Preset Name
:
This field identifies the current preset settings. Users must load a preset to directly
edit this field (see Activating Presets, on page 3.2.62 ).

Output Power:
Set the output power level (in kW). Output power limits are a function of the
transmitter mode of operation (see Table 1-1 of the Pre-Installation Manual for RF output power
ratings for this transmitter).

Frequency
: Set value. Valid frequencies are between 87.00 and 108.00 MHz.

Mode:
Set the overall transmission mode. Available options are:
 FM: an analogue only mode, transmits a carrier, frequency modulated with audio.
 HD: all digital mode; this mode transmits the upper and lower digital sidebands of OFDM
IBOC carriers. HD transmitter is typically high-level combined (coupler or spatial) with a paired
FM only transmitter. See page
3.2.64 for additional calibration settings. This mode requires
additional hardware.
 FM+HD: also known as hybrid/simulcast or low-level combined, this mode transmits the
analog carrier (FM modulated) and the upper and lower digital sidebands of OFDM IBOC
carriers. See page
3.2.64 for additional calibration settings. This mode requires additional
hardware.
 DRM+: transmits a DRM OFDM signal using the I/Q stream from a DRM modulator connected
to the desired AES input. See page
3.2.64 for additional calibration settings. This mode
requires additional hardware.
NOTE
:
Settings on the Presets tabs are shown/hidden based on the chosen settings. Not all settings are
available in all modes.