Seagate Medalist 2160N (ST52160N) User manual

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Medalist Pro Family
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Medalist 2160N (ST52160N)
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Medalist 2160WC (ST52160WC)
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SCSI Interface Drives
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Product Manual
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Medalist Pro Family
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Medalist 2160N (ST52160N)
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Medalist 2160WC (ST52160WC)
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SCSI Interface Drives
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Product Manual
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© 1996 Seagate Technology, Inc. All rights reserved
Publication Number: 32650-001, Rev. A, December 1996
Seagate, Seagate Technology, the Seagate logo and Medalist are
registeredtrademarksofSeagateTechnology,Inc.Otherproductnames
are trademarks or registered trademarks of their owners.
Seagate reserves the right to change, without notice, product offerings
or specifications. No part of this publication may be reproduced in any
form without written permission from Seagate Technology, Inc.
2 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specifications summary table . . . . . . . . . . . . . . . . . . . 3
1.0 Specifications summary . . . . . . . . . . . . . . . . . . . . . 5
1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Physical geometry . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Functional specifications . . . . . . . . . . . . . . . . . . . 5
1.4 Physical dimensions . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Read look-ahead and caching . . . . . . . . . . . . . . . . 7
1.7 Start/stop command . . . . . . . . . . . . . . . . . . . . . . 7
1.7.1 Power-up sequence . . . . . . . . . . . . . . . . . . . 7
1.7.2 Power-down sequence . . . . . . . . . . . . . . . . . . 8
1.7.3 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.8 Power management . . . . . . . . . . . . . . . . . . . . . . 8
1.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . 9
1.8.2 Voltage tolerance . . . . . . . . . . . . . . . . . . . . . 9
1.8.3 Input noise . . . . . . . . . . . . . . . . . . . . . . . 10
1.9 Environmental . . . . . . . . . . . . . . . . . . . . . . . . 10
1.9.1 Ambient temperature (HDA case) . . . . . . . . . . . 10
1.9.2 Temperature gradient . . . . . . . . . . . . . . . . . . 10
1.9.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.9.4 Relative humidity . . . . . . . . . . . . . . . . . . . . 11
1.10 Shock and vibration . . . . . . . . . . . . . . . . . . . . 11
1.11 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.12 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.13 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 12
1.14 Electromagnetic Compliance for the European Union . . . 13
1.15 FCC verification . . . . . . . . . . . . . . . . . . . . . . 13
2.0 Hardware and interface . . . . . . . . . . . . . . . . . . . . 17
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A iii

2.1 SCSI-3 compatibility . . . . . . . . . . . . . . . . . . . . . 17
2.2 Handling and static-discharge precautions . . . . . . . . . 17
2.3 Electrical interface . . . . . . . . . . . . . . . . . . . . . . 18
2.4 Interface and connector configuration . . . . . . . . . . . . 19
2.5 ST52160N interface connector . . . . . . . . . . . . . . . 20
2.5.1 ST52160N interface pin assignments . . . . . . . . . 21
2.5.2 ST52160WC interface connector . . . . . . . . . . . . 22
2.5.3 ST52160WC interface pin assignments . . . . . . . . 22
2.6 Interface cable requirements . . . . . . . . . . . . . . . . 25
2.6.1 Interface cable length for asynchronous operation . . . 25
2.6.2 Interface cable for Fast SCSI operation . . . . . . . . 25
2.6.3 Interface cable for UltraSCSI operation . . . . . . . . 25
2.7 Options jumper block . . . . . . . . . . . . . . . . . . . . 26
2.7.1 SCSI address . . . . . . . . . . . . . . . . . . . . . . 26
2.8 Active Termination . . . . . . . . . . . . . . . . . . . . . . 29
2.9 Parity enable option . . . . . . . . . . . . . . . . . . . . . 29
2.9.1 Motor Start option . . . . . . . . . . . . . . . . . . . . 29
2.9.2 Remote LED connection . . . . . . . . . . . . . . . . 29
2.10 Daisy chaining . . . . . . . . . . . . . . . . . . . . . . . 29
2.11 Hot-plugging . . . . . . . . . . . . . . . . . . . . . . . . 30
2.12 Mounting the drive . . . . . . . . . . . . . . . . . . . . . 30
3.0 Command set . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.1 Command descriptor block . . . . . . . . . . . . . . . . . 35
3.2 Status byte . . . . . . . . . . . . . . . . . . . . . . . . . 35
3.3 Supported commands . . . . . . . . . . . . . . . . . . . . 36
3.4 Group 0 commands . . . . . . . . . . . . . . . . . . . . . 37
3.4.1 Test Unit Ready command (00H) . . . . . . . . . . . . 37
3.4.2 Rezero Unit command (01H) . . . . . . . . . . . . . . 38
3.4.3 Request Sense command (03H) . . . . . . . . . . . . 38
3.4.4 Format Unit command (04H) . . . . . . . . . . . . . . 39
3.4.5 Reassign Blocks command (07H) . . . . . . . . . . . 43
iv Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

3.4.6 Read (6) command (08H) . . . . . . . . . . . . . . . . 45
3.4.7 Write (6) command (0AH) . . . . . . . . . . . . . . . . 46
3.4.8 Seek (6) command (0BH) . . . . . . . . . . . . . . . . 47
3.4.9 Inquiry command (12H) . . . . . . . . . . . . . . . . . 47
3.4.10 Mode Select (6) command (15H) . . . . . . . . . . . 48
3.4.11 Reserve (6) command (16H) . . . . . . . . . . . . . 51
3.4.12 Release (6) command (17H) . . . . . . . . . . . . . 52
3.4.13 Mode Sense (6) command (1AH) . . . . . . . . . . . 53
3.4.14 Start/Stop Unit command (1BH) . . . . . . . . . . . . 56
3.4.15 Receive Diagnostic Results command (1CH) . . . . . 57
3.4.16 Supported Diagnostic Pages . . . . . . . . . . . . . 58
3.4.17 Translate Address Page . . . . . . . . . . . . . . . 59
3.4.18 Send Diagnostic command (1DH) . . . . . . . . . . . 61
3.5 Supported Diagnostics Page—Send Diagnostics . . . . . . 62
3.6 Translate Address Page—Send Diagnostic . . . . . . . . . 62
3.6.1 Read Capacity command (25H) . . . . . . . . . . . . 63
3.6.2 Read (10) command (28H) . . . . . . . . . . . . . . . 64
3.6.3 Write (10) command (2AH) . . . . . . . . . . . . . . . 65
3.6.4 Seek (10) command (2BH) . . . . . . . . . . . . . . . 66
3.6.5 Write and Verify command (2EH) . . . . . . . . . . . . 67
3.6.6 Verify command (2FH) . . . . . . . . . . . . . . . . . 68
3.6.7 Read Defect Data command (37H) . . . . . . . . . . . 68
3.6.8 Write Data Buffer command (3BH) . . . . . . . . . . . 70
3.6.9 Read Data Buffer command (3CH) . . . . . . . . . . . 72
3.6.10 Read Long command (3EH) . . . . . . . . . . . . . . 74
3.6.11 Write Long command (3FH) . . . . . . . . . . . . . . 74
3.7 Group 2 commands . . . . . . . . . . . . . . . . . . . . . 75
3.7.1 Log Select command (4CH) . . . . . . . . . . . . . . 75
3.8 Log Sense command (4DH) . . . . . . . . . . . . . . . . . 82
3.9 Reserve (10) command (56H) . . . . . . . . . . . . . . . . 83
3.10 Release (10) command (57H). . . . . . . . . . . . . . . 84
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A v

3.11 Group 3 and 4 commands . . . . . . . . . . . . . . . . . 85
3.12 Group 5 and 6 commands . . . . . . . . . . . . . . . . . 85
3.13 Group 7 commands . . . . . . . . . . . . . . . . . . . . 85
Appendix A. Supported messages . . . . . . . . . . . . . . . . 87
A.1 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 87
A.2 Synchronous Data Transfer Request message (01H) . . . . 88
A.2.1 Wide Data Transfer Request Message . . . . . . . . . 89
Appendix B. Sense data . . . . . . . . . . . . . . . . . . . . . . 91
B.1 Additional sense data . . . . . . . . . . . . . . . . . . . . 91
B.2 Sense key . . . . . . . . . . . . . . . . . . . . . . . . . . 93
B.3 Additional sense code and additional sense code qualifier . 94
Appendix C. Mode pages . . . . . . . . . . . . . . . . . . . . . 97
C.1 Read-Write Error Recovery page (01H) . . . . . . . . . . 98
C.2 Disconnect/Reconnect page (02H) . . . . . . . . . . . . 100
C.3 Format Device page (03H) . . . . . . . . . . . . . . . . 102
C.4 Rigid Disc Geometry page (04H) . . . . . . . . . . . . . 104
C.5 Verify error recovery page (07H) . . . . . . . . . . . . . 107
C.6 Caching page (08H) . . . . . . . . . . . . . . . . . . . . 108
C.6.1 Read look-ahead and caching . . . . . . . . . . . . 108
C.6.2 Write caching and write merging . . . . . . . . . . . 109
C.6.3 Caching page description . . . . . . . . . . . . . . 110
C.7 Control Mode page (0AH) . . . . . . . . . . . . . . . . . 113
C.7.1 Unit Attention Parameters (00H) . . . . . . . . . . . 114
Appendix D. Inquiry data . . . . . . . . . . . . . . . . . . . . 117
D.1 Inquiry data . . . . . . . . . . . . . . . . . . . . . . . . 117
D.2 Vital product data pages . . . . . . . . . . . . . . . . . 120
D.2.1 Unit Serial Number page (80H) . . . . . . . . . . . . 121
D.2.2 Implemented Operating Definition page (81H) . . . . 121
D.2.3 Firmware Numbers page (C0H) . . . . . . . . . . . 122
D.2.4 Date Code page (C1H) . . . . . . . . . . . . . . . . 123
D.2.5 Jumper Settings page (C2H) . . . . . . . . . . . . . 123
vi Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Figures
Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 7
Figure 2. Single-ended transmitter and receiver . . . . . . . . . . .18
Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 4. ST52160N jumper settings . . . . . . . . . . . . . . . . 27
Figure 5. ST52160WC jumper settings . . . . . . . . . . . . . . . 28
Figure 6. ST52160N Mounting dimensions . . . . . . . . . . . . . 32
Figure 7. ST52160WC Mounting dimensions . . . . . . . . . . . 33
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A vii

Introduction
This manual describes the functional, mechanical and interface specifi-
cations for the MedalistPro 2160N and Medalist Pro 2160WC SCSI
hard disc drives. The Medalist Pro 2160N is referred toin this manual by
its model number ST52160N.This drive comes withthe standard50-pin
interface connector. The Medalist Pro 2160WC is referred to in this
manual by its model number ST52160WC. This drive comes with the
80-pin blindmate single-connector attachment (SCA-2).
Seagate desktop products take a stepinto the future withtheST52160N
and ST52160WC. These drives feature MR heads and PRML recording
technology.
The Medalist Pro drives uses an UltraSCSI interface. The ST52160N
supports a synchronous external transfer rate of up to 20 Mbytes per
second. TheST52160WCsupports a synchronousexternal transfer rate
of up to 40 Mbytes per second.
These drives have other features that ensure fast data throughput. The
ST52160N uses a 128-Kbyte buffer. The ST52160WCuses a 256-Kbyte
buffer. The adaptable cache aids the flow of read and write data.
Embedded servo technology allows the drives to position the heads for
data retrieval efficiently and accurately while eliminating the periodic
thermal recalibration that can interrupt during data transfers. These
drives also use a 16-bit microprocessor and an intelligent controller that
provides data streaming: direct data transfers between the drive and the
host without microprocessor intervention. This feature allows for a sus-
tained data rate that facilitates video playback and other multimedia
operations.
Thedrivesconformtothestandard3.5-inchfootprintbuthavea0.75-inch
(19 mm) height profile and a 5.380-inch depth profile. The lower height
and shorter depth gives the designer or integrator more room for air
circulation, other peripherals or a smaller drive bay.
The SCSI commands the drives support are listed in Section 3.3. on
page 36.
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 1

The following is a summary of the drives’ features:
Capacity
•2.17 Gbytes, guaranteed
Features
•SCSI-3 SPI and SCAM Plug and Play compliant
•8-bit and 16-bit UltraSCSI
•Transfer rates up to 20 Mbytes and 40 Mbytes per second
•11-msec average seek time
•5,379-RPM rotational speed
•5.56 average latency
•128-Kbyte1and 256-Kbyte2buffer
•Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.)
•Rotational-position seek/sort
•On-the-fly ECC correction
•Embedded servo
•PRML channel
•MR heads
Acoustics
•3.4-bel idle sound power level
•27-dBA idle sound pressure level
Mini 3.5-inch form-factor
•19-mm-height profile
•Fits standard 3.5-inch footprint
1. ST52160N
2. ST52160WC
2 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

Specifications summary table
The following table serves as a quick reference for the drives’ perform-
ance specifications. These and other specifications are discussed in the
Specifications summary section following the table.
Drive specification ST52160N ST52160WC
Guaranteed capacity (Gbytes, 109 )2.17 2.17
Guaranteed sectors 4,238,282 4,238,282
Bytes per sector 512 512
Sectors per track (average) 161 161
Physical cylinders 6,536 6,536
Physical read/write heads 4 4
Discs 2 2
Recording density (bits per inch, max) 122,369 122,369
Track density (tracks per inch) 6,731 6,731
Spindle speed (RPM) 5,397 ±0.5% 5,397 ±0.5%
Internal data-transfer rate
(Mbits per second max) 56.3 to 99.6 MHz 56.3 to 99.6 MHz
External transfer rate
(Mbytes per second, max) 10.0 asynchronus 20.0 synchronous 20.0 asynchronus 40.0 synchronous
Cache buffer (Kbytes) 128 256
Height, inches max (mm) 0.748 (19.0) 0.748 (19.0)
Width, inches max (mm) 4.01 (101.8) 4.01 (101.8)
Depth, inches max (mm) 5.38 (136.6) 5.38 (136.6)
Typical weight, lb. (Kg) 1.0 (0.45) 1.0. (0.45)
Track-to-track seek time (msec, typical) 3.5 3.5
Average seek time (msec, typical) 11.0 11.0
Average seek time read (msec, typical) 12.0 12.0
Average seek time write (msec, typical) 13.0 13.0
Full-stroke seek time (msec, typical) 25.0 25.0
Average latency (msec) 5.56 5.56
Power-on to ready (sec, typical) 20 20
Spinup current: +12V (max) 1.18A 1.18A
Seek power (typical) 6.4W 6.4W
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 3

Drive specification ST52160N ST52160WC
Read/Write power (typical) 6.3W 6.3W
Idle power (typical) 6.2W 6.2W
Voltage tolerance (including noise): +5V ± 5% ±5%
Voltage tolerance (including noise): +12V ± 5% ±5%
Ambient temperature, operating (C°) 5° to 55°C 5° to 55°C
Temperature gradient, operating
(°C per hour max) 20°C 20°C
Relative humidity,operating gradient
(max) 10% per hr. 10% per hr.
Relative humidity, operating 8% to 80% 8% to 80%
Wet bulb temperature
operating (noncondensing) 29.4°C 29.4°C
Altitude, operating –1,000 to
10,000 ft. –1,000 to 10,000 ft.
Shock, normal operating
(Gs max for 11 msec) 2 Gs 2 Gs
Vibration, operating
(Gs max at 22–350 Hz without
nonrecoverable errors) 0.75 Gs 0 to Peak 0.75 Gs 0 to Peak
Vibration, nonoperating
(Gs max at 22–350 Hz with no physical
damage incurred) 4 Gs 0 to Peak 4 Gs 0 to Peak
Nonrecoverable read errors
(bits transferred) 1 per 1013 1 per 1013
Mean time between failures (MTBF)
(power-on hours) 500,000 500,000
Contact start-stop cycles 50,000 50,000
Service life (years) 5 5
4 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

1.0 Specifications summary
1.1 Formatted capacity
The capacities specified here donot include spare sectors andcylinders.
The media contains 2,000 spare blocks at the end of the volume.
Guaranteed capacity (Gbytes3)2.17
Guaranteed sectors 4,238,282
1.2 Physical geometry
Discs 2
Read/write heads 4
Cylinders 6,536
Sectors per track (average) 161
1.3 Functional specifications
Interface SCSI-3 SPI Compliant
PRML recording method Code (0,4,4)
External data-transfer rate
(Mbytes per sec, max) 10 asynchronous4
20synchronous4
20 asynchronous5
40synchronous5
Internal data-transfer rate
(Mbits per sec) 56.3 - 99.6 MHz
Bytes per sector 512
Data zones 19
Areal density (Mbits/ in2) 823.7
Track density (TPI) 6,731
Recording density (BPI, max) 122,369
3. One Gbyte equals 1,000,000,000 bytes.
4. ST52160N
5. ST52160WC
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 5

1.4 Physical dimensions
Height (max) 0.748 inches (19 mm)
Width (max) 4.01 inches (101.8 mm)
Depth (max) 5.38 inches (136.6 mm)
Weight (max) 1.0 lb. (0.45 Kg)
1.5 Seek time
All seek time measurements are taken under nominal conditions of
temperature and voltage with the drive mounted horizontally. In the
following table:
•
Track-to-track
seek time is the average of all possible single-track
seeks in both directions.
•
Average/typical
seek time is a true statistical random average of at
least 5,000 measurements of seeks in both directions between ran-
dom cylinders, less overhead.
•
Full-stroke
seek time is one-half the time needed to seek from logical
block address zero (LBA 0) to the maximum LBA and back to LBA 0.
Track-to-track
seek time typ6Average/typical
seek time7Full-stroke
seek time typ8 Average latency
3.5 msec typ 11.0 msec typ 25.0 msec typ 5.56 msec
4.5 msec max 12.0 msec read 27.0 msec max
13.0 msec write
Note. Hostoverheadvariesbetweensystemsandcannotbespecified.
Drive internal overhead is measured by issuing a no-motion
seek. Drive overhead is typically less than 1.0 msec.
____________________
6. All possible one- trackseeks are divided into the time requiredto perform theseseeks.
Only the mechanism time is used; interface overhead is excluded.
7. All possible seeks are divided into the time required to perform these seeks. Only the
mechanism time is used; interface overhead is excluded.
8. The average of 1,000 full-strokeseeks is used in this computation. Only the mechanism
time is used; interface overhead is excluded.
6 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

1.6 Read look-ahead and caching
The drives use algorithims that improve seek performance by storing
data in a buffer and processing it at a more convenient time. Three
methods are used: read look-ahead, read caching and write caching.
These are described in Appendix C.6 on page 108.
1.7 Start/stop command
If the motor-start option is disabled, the drive is ready within 20 seconds
after power is applied. If the motor-start option is enabled, the drive is
ready within 20 seconds after it receives the Motor Start command. If the
drive receives a command to spin down or power is removed, the drive
stops within 15 seconds.
1.7.1 Power-up sequence
The following typical power-up sequence is provided to assist you in
evaluating drive performance. This information does not constitute a
specification or a performance guarantee.
1. Power is applied to the disc drive.
2. Depending on whether there is a jumper installed on pins 9 and 10 of
the options jumper block (J5) shown in Figure 3 on page 19, either of
the following sequences occurs:
•If a jumper is not installed, the remote start option is not enabled, and
the drive begins to spin up as soon as power is applied.
•Ifajumperisinstalled,theremotestartoptionisenabled, andthedrive
begins to spin up when the host sends a command for the motor to
start.
2 4 6810 12 14 16
200
400
600
800
1,000

1,200
Time (seconds)
Current (mA)


Figure 1. Typical startup current profile
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 7

3. Within 250 msec after power is applied, the drive respondstothe Test
Unit Ready, Request Sense, Mode Sense and Inquiry commands.
4. The drive begins to lock in speed-control circuits.
6. The actuator lock releases the actuator.
7. The spindle motor reaches operating speed in about 5 seconds. After
5 seconds, there are no speed variations.
8. The drive performs velocity-adjustment seeks.
9. The drive seeks track 0 and is then ready.
1.7.2 Power-down sequence
Caution. Do not move the drive until the motor has come to a complete
stop.
1. The power is turned off.
2. Within 15 seconds, the drive spindle stops rotating.
3. The read/write heads automatically move to the landing zone, which
is inside the maximum data cylinder.
4. The magnetic acuator lock mechanism locks the arm. This completes
the power-down sequence.
1.7.3 Auto-park
During power-down, the read/write heads automatically move to the
landing zone. The heads park inside the maximum datacylinder and the
magnetic actuator lock engages. When power is applied, the heads
recalibrate to track 0.
1.8 Power management
The drive supports power-management modes that reduce its overall
power consumption. They automatically change from one mode to
another in response to interface activity. You do not need to change any
parameters or send any special commands to make the drive change
modes. The power-management modes are described as follows:
•Spinup. Spinup is defined as the period during which the spindle is
coming up to operating speed. The power consumed in this mode is
equivalent to the average power during the first 10 seconds after the
drive begins to spin up.
8 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A

•Seek. The servo electronics are active, and the heads are moving to
aspecificlocationon thedisc.Theread/writeelectronicsarepowered-
down. The powerconsumed in this mode is equivalent to the average
power measured while executing random seeks with a 2-revolution
(26.6 msec) dwell between seeks. The drive enters this mode from
the Idle mode.
•Read/Write. The drive is reading or writing. All electronics are active
and the heads are on track.
•Idle. The motor is up to speed and the drive is in track-follow mode.
1.8.1 Power consumption
Values in the table below were measured at the drive power connector
with an RMS DC ammeter. The terminating resistors are disabled, and
terminator power is supplied through the SCSI connector. All values are
measured 10 minutes after the drive spins up except as noted.
Spinup Seeking Read/
Write Idle Standby
Current at +12V
Amps peak 1.18 — — — —
RMS amps typ — 0.287 0.274 0.274 0.020
Watts typ — 3.444 3.288 3.288 0.240
Current at +12V
RMS amps typ — 0.596 .0.590 0.581 0.625
Watts typ — 2.980 2.950 2.905 3.125
Power
Total watts typ — 6.424W 6.238W 6.193W 3.365W
1.8.2 Voltage tolerance
+5V +12V
Voltage tolerance
(including noise) ±5% ±5%
Medalist Pro 2160N/ 2160WC Product Manual, Rev. A 9

1.8.3 Input noise
+5V +12V
Voltage tolerance
(including noise) ±5% ±5%
Input noise frequency
(max) 25 MHz 25 MHz
Input noise
(max, peak-to-peak) 100 mV 240 mV
1.9 Environmental
Thissectionspecifiesacceptableenvironmentalconditionsforthedrives.
The operating specifications assume that the drive is powered up. The
nonoperating specifications assume that the drive is packaged as it was
shipped from the factory.
1.9.1 Ambient temperature (HDA case)
Operating 5°C to 55°C (41°F to 131°F)
Nonoperating –40°C to 70°C (–40°F to 158°F)
Note. The system must provide sufficient airflow so that the
aluminum base surface temperature remains below 55°C.
1.9.2 Temperature gradient
Operating 20°C per hour (36°F per hour)
Nonoperating 30°C per hour (54°F per hour)
1.9.3 Altitude
Operating –1,000 ft. to 10,000 ft. (–305 m to 3,048 m)
Nonoperating –1,000 ft. to 40,000 ft. (–305 m to 12,192 m)
10 Medalist Pro 2160N/ 2160WC Product Manual, Rev. A