NEC NEAX2000 IVS ND-45492 - Manual (Page 145)

CHAPTER 3 ND-45492 (E)
Page 128
Revision 2.0
• If a D.C. voltage is supplied with the tone from the external tone source equipment, a transformer or cou-
pling capacitor should be used as shown in
Figure 007-35 .
Figure 007-35 Connecting a Tone Source Supplied with D.C.
NAP 200-007
Sheet 43/56
Termination of Cables on the MDF
TO PBX
TO COT
Ring
Tip
K
TRANSFORMER
SOURCE
CAPACITOR
SOURCE
TO COT
Tip
K
Ring
TO CONTROL CIRCUIT
FROM PN-DK00
2 µF
TO PBX
TO CONTROL CIRCUIT
FROM PN-DK00
CAPACITOR
2 µF
R
R
EXTERNAL EQUIPMENT
EXTERNAL EQUIPMENT
DC
VOLTAGE
SOURCE
DC
VOLTAGE
SOURCE