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ST12450W/WD Installation Guide, Rev. B 15
DC power requirements
Single-ended Differential
++
++
+5V
++
++
+12V
++
++
+5V
++
++
+12V
Voltage regulation
5
±±
±±
± 5%
±±
±±
± 5%
2
±±
±±
± 5%
±±
±±
± 5%
2
Amps
Maximum operating current
1
1.32 0.91 1.65 0.91
Maximum starting current
Peak DC
3, 6
1.3 2.18 1.43 2.18
Peak AC
3
– 3.1 – 3.1
Delayed motor start (max)
4
1.25 1.5 1.31 1.5
Peak operating current
Typ DC
1,10
1.3 0.84 1.6 0.84
Max DC
1
1.32 0.91 1.65 0.91
Max (peak) 1.4 1.85 2.4 1.85
Track following (DC)
at OD
1
1.3 0.78 1.4 1.85
at ID
1
1.3 0.82 1.4 0.78
Read track
OD DC
1, 13
1.4 0.81 1.9 0.81
AC 1.5 1.16 2.5 1.16
Seeking
Typical DC
1, 12
1.3 1.06 1.4 1.06
Maximum DC
1
1.3 1.14 1.44 1.14
Maximum (peak) AC 1.3 1.85 2.2 1.85
1
Measured with an average reading DC ammeter. Instanta-
neous +12V current peaks will exceed these values.