NV15/NV20 Operations and Maintenance Manual
Operating the transmitter
Issue 3.2 2013-10-01
Page 2-47
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 2.34 on page 2-44
)
•
Preset Name
This field identifies the current preset settings. Users must load a preset to
directly edit this field (see
Activating Presets on page 2-46
).
•
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
2-48
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
2-48
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
2-48
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.
Summary of Contents for NV15
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