Nortel DCT1900 Technical Product Manual page 88

Technical Product Manual - DCT1900
Product Specifications, System Boards
6.11 Line Termination Unit , LTU2 - REX-BRD0019A
Compliance to Regulations and Standards
EIA-470
Environmental
Temperature
Operating
Storage
Relative humidity
General Specifications
Length x width
Weight
Telephone Line Interface Specifications
Insulation
DC Characteristics
Range of line current
On–hook equivalent resistance : > 9 M
Resistance to earth (in quiescent
and loop state)
AC Characteristics
On–hook impedance
Off–hook impedance
Return Loss
Relative levels
Input (AD loss) range
Output (DA loss) range
Balancing impedance
Longitudinal conversion loss
Ringing Detection
Ringing voltages
Impedance for voice signals
Capacity
Ringing voltages
Insensitive to signals
Frequency range
Pulse Dialing
Make/break period
Selected digit N generates
Line Voltage during pulsing
6-8
: USA
: 32 to 158°F (0 to 70°C)
: -40 to 158°F (-40 to 70°C)
: 20 to 80%, non condensing
13.5" x 7.6" x .8" (344 x 192 x 20 mm)
.95 lb (430 grams) (excluding packaging)
: 1.5 kVac between line and secondary circuitry
: 1 kVac between line and cabinet
: 60 mA max.
between wires a and b for 200 Vdc
: 1 G between wires a/b and E-wire for up to 250 Vdc
: Software programmable 600
: See 'Ringing Detection'
: 15 dB min.
: Software programmable
: 6 to -11dBr against 270
: 12 to -4.5 dBr against 270
: Software programmable; 600
: 60 dB min. between 50 Hz and 4 KHz
: 10 k min. between 24 to 90 Vrms, 25 to 50 Hz
: 100 k min. at AC voltages up to 2 V (peak),300 Hz to 3400 Hz
: 1 μF +/- 5%
: 24 to 120 Vrms
: 17 Vrms max.
: Software programmable between 16 and 64 Hz
: Software programmable between 0 to 255 ms
: N pulses and digit 0 generates either 10 pulses (default)
: Limited to 240 Vdc
or complex
+ (750 // 150 nF)
+ (750 // 150 nF)
, 900 or complex
Specs-DCT1900/R8/mw
© 2000-2005