Cisco AS5800 Universal Access Server Hardware Installation Guide
System Specifications
A-6
DC PEM Specifications

The PEMs provi de –48 VDC power, which is distributed through the filter module to the dial shelf

backplane. The analog isolators in the fil ter module a re provide d wi th 15 VDC. T he PEMs s uf fer no

damage if any or all outputs have no load (no load occurs when there are no cards plugged into the

backplane) or if the m aximum input voltage i s exceeded; however, input voltag es that exceed 75 V

eventually trip the PEM 60 A circuit breaker, and you might have to reset the breaker as needed.

TableA-8 lists DC output voltage and current specifications.

Humidity
Operating
Nonoperating 10 to 90%, noncondensing
10 to 95%, noncondensing
Altitude
Operating
Nonoperating 9,843 ft (3,000 m) at 104° F (40° C)
15,000 ft (4,570 m) over allowable
temperature range
Thermal shock
Operating
Nonoperating
23 to 113° F (–5 to 45° C at 0.5° C) per
minute
–13 to 158° F (–25 to 70° C) with
change-over time between 2 and 3 minutes
Vibrati on
Operating
Nonoperating 1.12 Grms from 3 to 500 Hz
2 Grms from 3 to 500 Hz
Ripple and noise 200 mV
Battery feed noise 3kHz band between 10KHz and 20 MHz
Voice frequency noise
Radio frequency noise 70 dBrnC
500 mV RMS
Long-term voltage drift ± –0.5%
TableA-8 Power Entry Module Power Specifications
Power Description
Voltage to backplane
Maximum
Nominal
Minimum
–38 VDC
–48 VDC
–75 VDC
Current
Minimum (SS)
Nominal (SS)
Maximum (SS)
Peak (2 sec)
3 A
42 A
54 A
60 A
Circuit breaker 50A
TableA-7 Dial Shelf Controller Card Environmental Specifications (continued)
Description Specification