Specifications
Table Of Contents
- AT-8900 Series Hardware Reference
- Contents
- Models Covered By This Reference
- Why You Should Read This Reference
- Where To Find More Information
- Hardware Description
- Online Documentation
- AT-TFTP Server
- Using Windows Terminal and Windows Hyperterminal
- Switch Start-up
- RS-232 Terminal Port (ASYN0)
- Useful Cables
- Test Facility
- Power Supply Units (PSUs)
- Port, Connector, and Cable Combinations
- Troubleshooting
- Expansion Options
- Restricted Procedures
- Contacting Us

4 AT-8900 Series Switch
C613-03075-00 REV A
Mounting System
•1U rack mounting
Environmental Conditions
• Operating temperature range: 0 to 50º C (32 to 122º F)
• Storage temperature range: -25 to 75º C (-13 to 167º F)
• Relative humidity range: 5 to 95% non-condensing
• Operational altitude: 3,050 metres maximum (10,000 feet)
Regulatory Standards
AC models
• EMC: EN55022 class A, FCC class A, and VCCI class A
• EN61000-3 levels 2 (Harmonics), and 3 (Flicker)
• Immunity testing to EN55024
• Safety: UL60950, CAN/CSA-C22.2 NO. 60950-00, EN60950,
AS/NZS3260
• Certification: UL, cUL, TUV
DC models
• EMC: EN55022 class A, FCC class A, and VCCI class A
• Immunity testing to EN55024
• Safety: UL60950, CAN/CSA-C22.2 NO. 60950-00, EN60950,
AS/NZS3260
• Certification: UL, cUL, TUV
LEDs
• Port and System status LEDs
• For a complete list of LEDs and their functions, see “LEDs and What
They Mean” on page 24
Power Supply Unit
• PSUs are hot-swappable and load share
AC models
• Universal 100/240 VAC 47/63 Hz input
• Maximum continuous current draw, 2.2A at 100V, 1.1A at 230V
• Maximum inrush current (cold start at 25º C/77º F), 70A at 240V, 32A at
115V
DC models
• 40 to 60 V, 48 V nominal
• Supports either positive grounded or negative grounded operation
• Maximum continuous current draw, 3.9A at 36v
• Maximum standby current, 100mA