1.3.2 Characteristics
Terminal Equipment Loop Limit •PT: KX-DT300/KX-T7600 series DPT: 90 W; all other DPTs/APTs:
40 W
•SLT: 600 W including set
•Doorphone: 20 W
•CS: 65 W
Minimum Leakage Resistance 15 000 W minimum
Maximum Number of Extension
Instruments per Line
1. for PT or SLT
2. by Parallel or eXtra Device Port connection of an APT/DPT and
an SLT
3. by Digital eXtra Device Port connection of 2 DPTs and an SLT
Ring Voltage 75 Vrms at 20 Hz/25 Hz depending on the Ringing Load
Central Office Loop Limit 1600 W maximum
Hookswitch Flash Timing Range 24 ms to 2032 ms
Door Opener Current Limit 24 V DC/30 V AC, 1 A maximum
External Relay Current Limit 24 V DC/30 V AC, 1 A maximum
External Sensor Current Limit Power to the external sensor is provided from the EIO4 card and must
be grounded through the EIO4 card. For the connection diagram, refer
to "3.7.3 EIO4 Card (KX-TDA0164)". The PBX detects input from the
sensor when the signal is under 100 W.
Paging Terminal Impedance 600 W
MOH (Music on Hold) Terminal
Impedance
10 000 W
Document Version 2011-10 Installation Manual 27
1.3.2 Characteristics