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CHAPTER 3 NDA-24219
Page 82
Revision 2.0
NAP-200-007
Sheet 33/55
Termination of Cables on MDF
(10) External Tone Source Equipment
The cross connection for a customer owned external tone source equipment is shown in Figure 007-25, as
an example.
Requirement for External Tone Source Equipment
• Output level : Less than 0 dbm (Adjustable)
• Output impedance : Less than 1 kΩ (When using PN-4COT and PN-DK00)
: Less than 10 kΩ (When using Pin Jacks on PN-TNTA)
• Control Method : Start - Ground Start
Note 1
: Stop - Ground Off (Open)
Note 1: The current capacity of relay contact (PN-DK00 card) is 0.125 A.
Note 2: When connecting the external tone source equipment using the PN-4COT / 8COT and PN-DK00 cards, an appropriate
diode must be installed on the MDF, as shown in
Figure 007-25
.