ET-400 DUoFONE Cordless Telephone System
(430-0550) Specifications Faxback Doc. # 16891
Base Unit Handset Unit
Transmit Frequency [MHz] 46.6 to 46.9 49.6 to 49.9
Receive Frequency [MHz] 49.6 to 49.9 46.6 to 46.9
Transmit RF Output [V] 2.5 (at 50Ohms) 2.5 (at 50Ohms)
Memory Capacity (Pulse or Tone): 28 digits
Redial Memory Capacity: 32 digits
Memory Position Capacity: 16 stations
Power Requirements
Base Unit: 120 volts, 60Hz AC (240 volts, 50Hz for UK models
available only in UK)
Handset Unit: Rechargeable Nickel-Cadmium batteries DC 4.8V
(1.2V x 4)
Telephone Connections: Use modular connectors (USOC type RJ-11C or
RJ-11W)
MEASUREMENT CONDITIONS
Standard Voltage
Handset: DC 4.8V +/- 0.1V
Base: AC 120V +/- 1V, 60Hz (or 240V +/- 2V, 50Hz
for UK models)
Room Temperature: 25 +/- 3 degrees C
Standard Modulation: 1kHz, 2kHz Dev.
Carrier Frequency:
Base Unit
TX RX TX RX
F. 46.610 MHz 49.670 MHz K. 46.770 MHz 49.830 MHz
G. 46.630 MHz 49.845 MHz L. 46.830 MHz 49.890 MHz
H. 46.670 MHz 49.860 MHz M. 46.870 MHz 49.930 MHz
I. 46.710 MHz 49.770 MHz N. 46.930 MHz 49.990 MHz
J. 46.730 MHz 49.875 MHz O. 46.970 MHz 49.970 MHz
PULSE DIALING
UNIT NOMINAL LIMIT
Dialing Rate P.P.S. 10 8.0 - 11
Dialing Rate ms 100 90 - 110
Break Ratio % 61 58 - 64
Make Ratio % 39 n/a
Pre-Digital Pause ms 1000 500 - 2000
Inter-Digital Pause ms 850 600 - 2000
Manual Access Pause sec. 3.8 3.5 - 4.2
Flash sec. 0.65 0.3 - 1.0
TONE DIALING
UNIT NOMINAL LIMIT
Row 1 \ Hz 697 687 - 707
Row 2 | Low Group Hz 770 759 - 781
Row 3 | Hz 852 840 - 864
Row 4 / Hz 941 927 - 955
Column 1 \ Hz 1209 1191 - 1227
Column 2 | High Group Hz 1336 1316 - 1356
Column 3 / Hz 1477 1455 - 1499
SIGNAL LEVEL
UNIT NOMINAL LIMIT
Minimum Level on Single Tone
Loop Current at 20mA
Low Group dBm -5.0 -7.5
High Group dBm -3.5 -5.5
Loop Current at 80mA
Low Group dBm -5.0 -12
High Group dBm -3.0 -10
Maximum Level on Pair Frequency
Loop Current at 40mA dBm -3.0 0
Tone Dial Single THD on Single Tone
Loop Current (both 20mA and 50mA) % 2.0 8.0
Duration of Signals ms 60 50 (min.)
Inter-Digital Time ms 60 50 (min.)
HANDSET UNIT
Receiver
UNIT NOMINAL LIMIT
Sensitivity at 20dB S+N/N uV 1.0 2.0
Squelch Sensitivity uV 0.5 1.0
Bandwidth at -6dB kHz +/- 8.0 +/- 7.0
Adjacent Channel Selectivity
at +/- 20kHz dB 50 35
Spurious Rejection Ration dB 50 35
Frequency Response
at 300Hz dB +3.5 +3.5 +/- 6.0
at 3000Hz dB +14.0 +14.0 +/- 6.0
Audio Output Power mV 30 16
THD at 1000uV RF Input % 5.0 10
S+N/N at 1000Hz RF Input dB 50 40
Local OSC Frequency Tolerance Hz +/- 500 +/- 1000
Ringer & Call Output Voltage Vp-p 15 10
Transmitter
UNIT NOMINAL LIMIT
RF Output Voltage at 50Ohm Vp-p 0.7 0.55
0.3 (Canada) 0.15 (Canada)
Frequency Tolerance Hz +/- 500 +/- 1000
Frequency Response
at 300Hz dB -3.0 -3.0 +/- 6.0
at 3000Hz dB -1.5 -1.5 +/- 6.0
Modulation Sensitivity at
2kHz Dev. mV 18 9 - 36
Modulation THD % 5.0 10
Current Drain
UNIT NOMINAL LIMIT
Stand-by mA 15 20
Talk mA 45 68
Battery Low LED Turn-on Voltage V 4.75 4.75 +/- 0.15
BASE UNIT
Receiver
UNIT NOMINAL LIMIT
Sensitivity at 20dB S+N/N uV 2.0 4.0
Squelch Sensitivity uV 0.5 1.0
Bandwidth at -6dB kHz +/- 8.0 +/- 7.0
Adjacent Channel Selectivity
at +/- 15kHz dB 40 27
Spurious Rejection Ratio dB 50 35
Frequency Response
at 300Hz dB -5.0 -5.0 +/- 6.0
at 3000Hz dB -3.0 -3.0 +/- 3.0
Telephone Line Output Level dBm -2.0 -2.0 +/- 3.0
THD at 1000uV RF Input % 5.0 10
S+N/N at 1000uV RF Input dB 50 40
Local OSC Frequency Tolerance Hz +/- 500 +/- 1000
NOTE: Nominal specs represent the design specs; all units should be able
to approximate these--some will exceed and some may drop slightly
below these specs. Limit specs represent the absolute worst
condition that still might be considered acceptable; in no case
should a unit perform to less than within any limit spec.
Transmitter
UNIT NOMINAL LIMIT
RF Output Volatge at 50Ohm Vp-p 0.25 0.18
0.7 (Canada) 0.55 (Canada)
Frequency Tolerance Hz +/- 500 +/- 1000
Frequency Response
at 300Hz dB -9.0 -9.0 +/- 6.0
at 3000Hz dB 8.0 8.0 +/- 6.0
Modulation Sensitivity at
2kHz Dev. dBm -10 -10 +/- 3.0
Modulation THD % 5.0 10
AC Power Consumption VA 3.5 7.0
Minimum Ringer Input Voltage V 35 40
EIA Ringer Tap Voltage V 130 105
Minimum Ringer Input Voltage
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