Figure 2-86 Connecting External Tone Source/Announcement Machine Supplied With D.c - NEC NEAX 2000IVS2 Installation Manual

• If a D.C. voltage is supplied with the tone from the external tone source/announcement ma-
chine, a transformer or coupling capacitor should be used as shown below.
Figure 2-86 Connecting External Tone Source/Announcement Machine Supplied
Ring
TO COT
Tip
TO PBX
K
Ring
TO COT
Tip
TO PBX
K
2
NEAX2000 IVS Installation Procedure Manual
ND-70928 (E), Issue 1.0
with D.C.
TRANSFORMER
TO CONTROL CIRCUIT
FROM PN-DK00
CAPACITOR
2µF
TO CONTROL CIRCUIT
FROM PN-DK00
CHAPTER 2 INSTALLATION
External Tone Source/Announcement Machine (DK/TNT/MP)
CAPACITOR
2µF
SOURCE
EXTERNAL TONE SOURCE/
ANNOUNCEMENT MACHINE
SOURCE
R
DC
VOLTAGE
SOURCE
EXTERNAL TONE SOURCE/
ANNOUNCEMENT MACHINE
R
DC
VOLTAGE
SOURCE
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