Vibration; Shock; Power - Nortel M522 Manual

2-2 Specifications

Vibration

The M522 is designed to work to specifications after being subjected to the
following vibrations in each of three orthogonal directions for 90 minutes:
•
•
•

Shock

When packaged, the M522 is designed to withstand normal handling during
shipment.
When unpacked, the M522 is designed to withstand accidental dropping
during normal use, without sustaining damage, when dropped on any face or
corner from a height not exceeding .75m (30 in).

Power

The M522 is powered through its connection to the M5216/M5316. The
M5216/M5316 is partially loop powered by a balanced 440 Ohm battery feed
from the switching equipment. The switch battery voltage supplied to the
loop is nominally 52 VDC with a minimum of 42.75 VDC and a maximum
of 56 VDC. Under normal conditions the polarity must be negative on the
Ring lead with respect to the Tip lead.
The current drawn from the loop is 16
current drawn from the loop is 10
The M5216/M5316 also requires a 16 V AC external power supply rated at
375 mA. During a power failure, the Handsfree and RT clock functions are
not available.
297–2011–208 02.01 Standard February 1999
Vibration frequency of 5 Hz to 500 Hz
Maximum half displacement 0.35mm (0.014 in)
Maximum acceleration 15m/s/s.
±
1mA when the set is active. The
±
1mA when the set is inactive.