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CHAPTER 5 ND-71548 (E)
Page 348
Issue 2
INSTALLATION TEST PROCEDURE
Test Outline:
The Howler Tone Generator and the Ringing Generator are equipped on the PWR Supply.
The purpose of the test is to confirm ringing signal by setting up a station to station connection and a howler tone
connection from a station accommodated in any PIM.
NAP-200-042
Sheet 1/2
Howler & Ringing Signal Test
START
Check PWR0 in each PIM.
While both PWR Supplies are OFF, turn ON power to PWR0. Leave PWR1 OFF.
Check howler tone.
A station accommodated in the PIM whose PWR Supply is to be tested goes off-hook.
(analog port only)
The station hears DT.
The station hears ROT within 12 seconds.
The station should confirm hearing howler tone within 30 seconds.
Check ringing signal.
Set up a station-to-station connection between two stations in the IM inm whose PWR
Supply is to be tested. (analog port only)
Confirm that ringing signal is sent out.
LC
Station B
RBT
LC
Station C
RG
LC
Howler Signal
Station A
A
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