Radio Shack TRS-80 Service Manual page 11

5-Meg Hard Disk
Service Manual
Ripple Voltages +5
12V
-12V
S-QO
®
Efficiency
65
Over-Voltage Protection 5*80
Dimensions
Height
Width
Length
Weight
Primary
Secondary
Environment
Ambient Temperature
Relative Humidity
Maximum Wet Bulb
Heat Dissipation
Altitude
50
mV
150
mV
150
mV
%
6.80
Volts
5.50 in (13.97
cm)
14.00 in (35.56 cm)
15o00 in (38.10 cm)
15.5 lbs (33.10 kg)
12.5 lbs (27.5 kg)
50 to 95
degrees
F.
(10
to
3 5
degrees
C.)
8%
to 80%
78%
non-condensing
operating:
to 6000
feet
(0
to
1829 meters)
storage: -1000 to 12000
feet
(-305 to
3656 meters)
Warm-Up Period
Minimum
On
Power-Up
2
minutes
Minimum
to
Turn System
On
After Turning System Off
15
seconds
Hard Disk Drive
Disk Organization
Tracks per Unit
Tracks per Platter
Sectors per Track
Bytes per Sector
Cylinders per Disk
Average Latency
Rotational Speed
Recording Density
Flux Density
Track Density
Storage Capacity (Hard
Disk)
Unformatted
Bytes per Track
612
306
34
256
153
8.34
msec
3600
rpm +/-
1%
7690
7690
254
10400
-
9