NTi Audio XL2 Sound Level Meter - Manual (Page 8)

8
Overview
1 XLR Signal Input
Either a balanced audio signal, an NTi Audio measure-
ment microphone or the microphone pre-amplifier MA220
plug directly into the XLR input. The Automated Sen-
sor Detection (ASD) technology reads the electronic
data sheet of any connected NTi Audio device after the
48 V microphone phantom power is activated.
2 RCA Input
Unbalanced audio signal input.
3 Voice Note Input
Internal microphone for recording voice notes and measur-
ing polarity and delay time. For polarity measurements, an
external microphone may also be used.
4 DC Power Socket
Socket for mains power adapter. Further details in the chap-
ter Power Supply in this manual.
5 USB Connector
Mini-B USB connection, for accessing the SD Card.
6 Digital I/O
Programmable digital inputs/outputs.
7 SD Card
For storing data, screenshots, voice notes, wav-files.
8 TOSLink Output
24 bit linear PCM audio signal output. For future use; not
active at this time.
9 Headphone Output
The XLR/RCA input signals are routed to the headphone out-
put. Connecting headphones mutes the internal speaker.
To connect the headphone output directly to a line input, a
load impedance < 8 kOhm is required for proper operation.
This can be achieved by inserting a 1 kOhm resistance be-
tween tip and ground of the output jack.
10 Speaker
The XLR/RCA input signals are routed to the speaker. Press
the speaker button to toggle the speaker on/off. Press
and hold the speaker button to access the volume control.
Set the speaker level with the rotary wheel .
11 Tripod Mount
Mechanical mount for attaching the XL2 to a tripod or mi-
crophone stand.