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48 | Section 5
Input Setting Related to Input Level
Input Setting -10dBV 0dBu +4dBu +9dBu PPM -9dBfs PPM
Analog input level - 10 dBV nom 0 dBu nom +4 dBu nom +9 dBu PML n/a
Livewire/AES - 32 dBfs nom -24 dBfs nom -20 dBfs nom -15 dBfs -9 dBfs PML
e ballistic (time) characteristic of Nx12’s meters changes depending on the Input Level set-
ting so to match the expected console meter type. When -10, 0, or +4dBu is selected, the meter
has a VU-standard integration time. When +9dBu PPM or -9dBfs PPM are selected, the meter
has a PPM time characteristic.
e table above shows the level at the green/red transition on the NX12 meter. For VU, this is
the nominal 0 value; for PPM, this is the Permitted Maximum Level (PML) value.
e usual setting is +4dBu. e +9dBu PPM setting is intended for Euro analog installations.
e -9dBfs setting is intended for Euro digital installations.
If Livewire inputs are used, this should usually be set to +4dBu for the -20dBfs Livewire
standard nominal level. Europeans could choose the -9dBfs PPM setting if they are operating
their Livewire network according to this standard.
Nominal Output Level
is adjusts the level of analog, AES, and Livewire outputs.
Output Setting Related to Output Level
Output Gain Setting -10dBV 0dBu +4dBu +9dBu PPM -9dBfs PPM
Analog output level - 10 dBV nom 0 dBu nom +4 dBu nom +9 dBu PML n/a
Livewire/AES - 32 dBfs nom -24 dBfs nom -20 dBfs nom -15 dBfs -9 dBfs PML
Meter Mode
Selects the audio that will be indicated on the LED meters.
4 Studio Out
♦ – Each studio output goes to a meter, from the top down
4 Studio In –
♦ Each studio input has a meter, from the top down
POH in –
♦ e two Program on Hold inputs go to the top meters
Phone 3&4 –
♦ Send and receive to/from hybrids 3 & 4
Phone 1&2 –
♦ Send and receive to/from hybrids 1 & 2
Studio 3&4
♦ – Input from and output to studios 3 & 4
Studio 1&2 (default)
♦ – Input from and output to studios 1 & 2 (the meter markings
correspond to this one)
Phone Send Adjustment
is setting adjusts the level of the hybrid into the telephone line, after the send limiter and is
calibrated with 0dB representing the usual send level into the line.
e default is 0dB, which should be OK for most telephone lines. If callers consistently com-
plain about low audio level and you have verified that this is a problem, you can increase the