Owner`s manual

11
Specifications
ˆ Specifications
DTMF Dialing
Minimum level of single tone (loop current 20 mA, typical)
Low group ...................................................................................................................................... –5.5 dBm
High group ......................................................................................................................................–3.5 dBm
Maximum level of frequency pair (loop current 40 mA) ................................................................... 1.0 dBm
Pause Time ............................................................................................................................... 2.0 seconds
Pulse Dialing
Dialing Rate ....................................................................................................................................... 10 pps
Breaking Ratio ....................................................................................................................................... 60%
Inter-Digital Pause ............................................................................................................................ 800 ms
Audio Performance
S/N Ratio (Record/Play, ref. 1 kHz) ............................................................ Greater than or equal to –30 dB
RX Level (ref 1 kHz loop current at 40 mA) ....................................................................................... 50 mW
TX Level (Record/Play, 1 kHz loop current at 40 mA)
Freq. = 500 Hz ............................................................................................................................... –15 dBm
Freq. = 1 kHz .................................................................................................................................. –13 dBm
Freq. = 2.5 kHz ............................................................................................................................... –20 dBm
Frequency Response (Record/Play, ref. to 1 kHz, outgoing message to line)
500 Hz ................................................................................................................................................... 0 dB
2500 Hz ............................................................................................................................................... –6 dB
Off-Hook Line Input Impedance (at 50 mA Loop Current)
Freq. 200-3500 Hz ....................................................................................................................... 650
±
30
Ω
DC Line Impedance (Off Hook DC resistance, at 20 mA) .................................................. Less than 301
Ω
Distortion (Record/Play, ref 1 kHz) ............................................................................ Less than 6% (typical)
Output to Speaker (Playback) ..................................................................................................... 90 dB SPL
Beep Tone Output ....................................................................................................................... 95 dB SPL
Beep Tone Frequency ....................................................................................................................... 850 Hz
Operation Parameters
Number of rings before call terminated ...................................................................................................... 6
Number of call attempts per stored message
1
×
Call mode ............................................................................................................................................. 1
3
×
Call mode ............................................................................................................................................. 3
DTMF Tone Signal
Fire ................................................................................................................................ DTMF Key #3 Tone
Burglar .................................................................................... Alternating DTMF Key #0 and Key #2 Ton es