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1.7.1.1 Typical current profile
Figure 1 shows a typical current profile for the Medalist 3240 and the
Medalist 2531.
1.7.2 Conducted noise
Input noise ripple is measured at the host system power supply across
an equivalent 80-ohm resistive load on the +12 volt line or an equivalent
15 ohm resistive load on the +5 volt line.
• Using 12-volt power the drive is expected to operate with a maximum
of 120 mV peak-to-peak triangular-wave injected noise at up to 25
MHz.
• Using 5-volt power the drive is expected to operate with a maximum
of 100 mV peak-to-peak triangular-wave injected noise at up to 25
MHz.
Note
. Equivalent resistance is calculated by dividing the nominal volt-
age by the typical RMS read/write current.
1.7.3 Voltage tolerance
Voltage tolerance (including noise): ± 5%
0
2
4
6
810
12
14 16
18
200
400
600
800
1,000
1,200
1,400
Current (mA)
Time (seconds)
Figure 1. Typical startup and operation current profile
Medalist 3240 and Medalist 2531 Product Manual, Rev. A 9