User`s guide

5Key Reference
124 N9340B User’s Guide
• Beep
Beep On/Off is a switch to enable/disable
Pass/Fail beep sound indication.
•Noise Cancel
This function is used to reduce the noise level
for any possible small signals. It is only available
in FM IBOC submenu, when Mask Type is set to
NRSC-5-B <Hybird>.
Channel
Key access: [MODE] > {IBOC Measurement} > {AM}/{FM}
> {Channel}
Press the Channel softkey to access a channel list
menu with customized channel setting files. The
channel file is easy to reload, delete and copy as
needed. The channel list function helps you more
quickly set up their instruments and complete the
measurements.
Auto Tune
Key access: [MODE] > {IBOC Measurement} > {AM}/{FM}
> {Auto Tune}
Press this softkey to automatically find out the
largest signal over specific broadcasting frequency
band. e measure its carrier frequency more
accurate and measure its unmodulated carrier
power or nominal power spectral density in a 1
kHz bandwidth of the digital Primary Main
sidebands for All Digital IBOC (FM) case. These
two parameters will be adopted as 0 Hz offset of
mask from carrier frequency and 0 dBc level
relative to unmodulated carrier or nominal power
spectral density in a 1 kHz bandwidth of the
digital Primary Main sidebands for All Digital IBOC
(FM) case.
The reference level estimation method is different
between IBOC (FM) all digital mode and other
modes. This function is correlative to Mask Type
selection.