14
Preparations
Battery life
Alkaline batteries
LR14 approx. 14 hours
Manganese batteries R14P approx. 6 hours
• The above values were determined under the following conditions.
20°C 50% RH, microphone UC-53A, preamplifi er NH-17, power
supply for preamplifi er ±12 V, backlight OFF, communications OFF,
continuous operation.
• The actual battery life will differ, depending on the microphone,
preamplifi er, settings, ambient conditions, and battery type.
When the backlight is used, current consumption will be about 15% higher.
When the preamplifi er power supply voltage is set to ±45 V, current consump-
tion increases by 70%. During use of the serial interface, current consumption
increases by 5%.
Remaining battery capacity indication
The following indication appears on the display, depending on the battery
status.
Note
When the battery indicator start to fl ash, replace the
batteries immediately. While the indicator is fl ashing,
the measurement will not be accurate.
AC Adapter
The unit can be powered from the supplied AC adapter NC-98A (100 to
240
VAC, 50/60 Hz).
Connect the cable from the AC adapter to the external power supply connec-
tor on the rear panel.
Important
To prevent the risk of damage, do not use any
AC adapter other than the NC-98A.
Flashing
Batteries
low
Sufficient remaining
capacity
Replace batteries
Summary of Contents for NA-42
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