Telos NX12 user manual Nominal Output Level, Meter Mode, Phone Send Adjustment

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

The 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.

The 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.

The	usual setting is +4dBu. The +9dBu PPM setting is intended for Euro analog installations.
The	-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

This 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 – The 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

This 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.

The 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