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OCTOBER 2006 VXA-320 TAPE DRIVE
55
ACOUSTIC NOISE
Power Supply
The external tape drive uses an internal switching power supply. Do not
change any input settings. The power supply automatically adjusts for
changes in voltages and frequency within the specified range.
Power Consumption
Tab le 7- 11 provides power consumption specifications.
ACOUSTIC NOISE
Internal tape drive—
External tape drive—When measured in the external enclosure, these levels
do not exceed the upper limits specified in the table.
Table 7-10 Power supply specifications (external model)
Type 40 watts, switching
Efficiency 70% minimum
Input voltage
a
a
Autoswitching input selection; no user selection required.
90 – 276 VAC
Frequency 47 – 63 Hz
Table 7-11 Power consumption (external model)
AC input current 0.5 amp @ 115 VAC
0.25 amp @ 230 VAC
Table 7-12 Acoustic noise specifications (internal tape drive)
Operating Mode L
pA
a
a
The average A-weighted sound pressure level over the frequency range 5 Hz – 12.5 kHz.
Powered on, idle 40 L
pA
Read or write 42 L
pA
High-speed search or rewind (up to 2-minute duration) 42 L
pA
Table 7-13 Acoustic noise specifications (external tape drive)
Operating Mode L
pA
a
a
The 30-second sustained average A-weighted sound pressure level over the following frequency range:
5 Hz to 12.5 KHz.
Powered on, idle 40 L
pA
Read or write 43 L
pA
High-speed search or rewind (up to 2-minute duration) 43 L
pA