NEC DSX-40 - Page 73

Specifications
DSX-40 Hardware Manual Specifications and Parts ◆ 67
Specifications
and Parts
DSX-40 Electrical Specifications
Power Supply:
Output Power:
120 VAC + 10% @ 50-60 Hz
83 Watts @ 100% full load
Input Current:
VA :
1.1A
132 VA
Kwh:
BTU:
Grounding Requirements:
0.132 KwH
450 Btu
12 AWG copper wire
Telephone and Line Voltages
Keyset Voltages
DC voltage measured at the MDF (between tip
and ring)
Minimum: 36 VDC
Maximum: 44 VDC
Minimum operating DC voltage measured at
station jack (between tip and ring)
24 VDC
Analog Station (SLIU) Card Single Line Telephone Voltages
DC voltage measured at the MDF (between tip
and ring)
On-Hook Idle State Minimum: 44 VDC
On-Hook Idle State Maximum: 56 VDC
Off-Hook Active State: 7.5 VDC typical,
depending on the telephone type and loop length.
Ringing voltage 50-65 VAC, sinusoidal (sine wave)
High Voltage Message Waiting Not available
FSK Message Waiting Available
REN (Ringer Equivalence) Per Port 5
Total REN (Ringer Equivalence Number) per
system
10
Line Voltages
Ringing voltage 42-103 VAC @ 20 Hz
Battery (from telco) 44-56 VDC
External Paging
Output Impedance: 600 Ohm
Output Level: 0 dBr @ 1.0 KHz