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6. APPENDICES
A. Specifications
I. Environmental:
a. Relative Humidity: 10-90% non-condensing
b. Operating Temperature: 5 - 40°C
c. Storage Temperature: 0 - 85°C
d. Airflow (for iS521 only): 10 cubic feet per minute
II. Power Requirements:
a. iS520 (Stand-Alone Box version). The iS520 is a stand-alone unit in
an enclosure with a power supply designed to plug into the line voltage
outlet of 100-240 VAC, 50/60 Hz, 1.7 A. A replacement power supply
can be ordered as Paralan part number 10641-1.
• Input Voltage 100 - 240 VAC
• Input Current 1.7 A AC
• Input Frequency 50 - 60 Hz
b. iS550 (Rack Mountable version)
• Input Voltage 100 - 240 VAC
• Input Current 1.2 A AC
• Input Frequency 50 - 60 Hz
c. iS521 (Board version). The iS521 board level unit requires a source of
5 Vdc ± 5%, 100 mv max ripple, 5 Amps (max). This current is for
the board only. Installations using the iS521 will pull additional
current if required to power external terminators. Total typical current
draw for external terminators would be 350 mA. The iS521 is current
limited to 1.67 Amps to the external terminators.
• Voltage 5 Vdc ± 5%
100 millivolt max ripple
• Current 5 AMP DC (max)
• 4-pin Power Connector pin-out
Pin Description
1 No connect
2 Ground
3 Ground
4 +5 Volt input
III. Agency Approvals: UL, CSA, TUV/VDE, CE (Contact Paralan to request
documentation).