Seagate ST91000640NS 사용자 설명서
![Seagate](https://files.manualsbrain.com/attachments/b8a65e13882738a617b4fb1dec35c49349976167/common/fit/150/50/2b4b03599a6f710d30699589ed58ececb8b6db2f0c51d2afc623a22705ee/brand_logo.png)
14
Constellation.2 Serial ATA Product Manual, Rev. B
Figure 3. Typical 5V/12V startup and operation current profile for 250GB models
3.8.2
Conducted noise
Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz.
Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power
connector.
Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power
connector.
• +5v
= 250 mV pp from 100 Hz to 20 MHz.
• +12v
= 450 mV pp from 8 kHz to 20 kHz.
= 250 mV pp from 20 kHz to 5 MHz.
Note. Equivalent resistance is calculated by dividing the nominal voltage by the typical RMS read/write
current.
3.8.3
Voltage tolerance
Voltage tolerance (including noise):
5V +10 / -7.5%
12V +10 / -7.5%