Quantum SDLT 600 User Manual page 43

Mode
Max for
SDLT 600 tape
9
drive Modes
1. The Max-Peak value represents short current spikes drawn for durations of < 50ms. On the 12V
supply, the peaks correspond to the pulse-width-modulated switching of the motors. These values
are calculated from the average of Peak-ripple-current + 2 sigma, measured at nominal DC voltage.
2. The Max-Mean value is the average of the maximum RMS current drawn during this operating
mode. These values are calculated from the average of RMS current + 3 sigma, measured at nominal
DC voltage.
3. The typical current is calculated from the average of all RMS current drawn during this operating
mode, measured at nominal DC voltage.
4. The Max DC power is calculated from the typical DC power + 3 sigma, measured at nominal DC
voltage. This value takes into account that the peak currents on the 5V and 12V do not occur at the
same time.
5. The Typical DC power is calculated from the average RMS DC power drawn during this operating
mode, measured at nominal DC voltage. This value also takes into account that the peak currents
on the 5V and 12V do not occur at the same time.
6. The Max AC power is calculated from the typical AC power in tabletop tape drives + 3 sigma.
7. The Typical AC power is calculated from the average of AC power drawn in tabletop tape drives.
8. These events last < 1 second and occur at a duty cycle of less than 25%.
9. The Max values for each mode are based on the Max-Mean values, since the peak values are of very
short duration.
(Common Notes)
(1) Voltage tolerance: 5V ±5%, 12V ±5%; Room temperature 24 °C. AC power measured at 117 V,
60 Hz.
(2) DC Current, MaxMean, and DC/AC Power Max refer to the statistically calculated maximum
average requirement based on a sample population of tape drives. These values do not reflect the
peak current or power requirement; this amount is given by the DC MaxPk current.
SDLT 600 Product Manual
5 V Current (A)
1
MaxPk
2
MaxMean
3
Typ
n/a 5.3 n/a
Chapter 2 SDLT 600 Tape Drive Specifications
12 V Current (A)
1
MaxPk
2
MaxMean
3
Typ
n/a 0.9 n/a
Functional Specifications
DC Power AC Power
(W) (W)
4
Max Max
5
Typ Typ
30 n/a 70
6
7
n/a
27