NTi Audio XL2 Sound Level Meter - Manual (Page 14)

14
Getting Started
3. Getting Started
Power Supply
The XL2 offers flexible power management options and can be
operated either by
Replaceable, rechargeable lithium-polymer (Li-Po) battery •
(included with the XL2 Analyzer)
4x AA-batteries
•
Mains Power Adapter •
The new battery is charged to approximately 50% and should
be fully charged before use with:
Battery Charger
(optional) Charging Time: approx. 3 hours
NTi Audio #: 600 000 332
Mains Power
Adapter
(optional) Charging Time: approx. 6 hours
Leave the battery inside and switch off
the XL2
for charging.
NTi Audio #: 600 000 333
USB Power
from PC Charging Time: approx. 6 hours
Switch off the XL2
for faster charg-
ing.
Operation using Mains Power Supply
You can also operate the XL2 with mains power using the NTi
Audio DC power supply unit. During operation with this exter-
nal Mains Power Adapter, it is recommended to leave the bat-
teries inside the instrument.
Mains Power Adapter
Electrically-isolated, linear DC power supply •
Non-NTi Audio power supplies may have neg- •
ative effects on measurements.
A decreased THD+N performance will oc-
•
cur with unbalanced input signals when
using
switching-type power supplies
(approx. 3 dB).
Damage caused by using an inappropriate ex-
•
ternal DC supply is not covered by warranty.
DC Power supply specifications
Voltage: 7.5 - 23.0 Volt •
Power: minimum 6 Watt •
Connector type: 2.1 x 5.5 x 9.5 mm •
Polarity: • .