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Electrical
Return Loss: >14 dB (ref 600 Ω)
Line Current Range: 15 mA to 120 mA
Resistance to Continuous Current (Talk Mode): 275 Ω typical at 20 mA
Monitor Mode Impedance: >120,000 Ω 300 Hz to 3400 Hz
Pulse Dial Output
Pulsing Rate: 10 pps pps
Open/Close Ratio: 60/40
Inter-digit Interval: 800 ms %, -10%
Resistance During Pulse Open: > 200,000 Ω
Protection Against Alternating Current Overvoltage: The TS30 survives up to 250 Vrms across its test leads.
Peak Acoustic Output of the Receiver: <120 dBspl
DTMF Output Tone Frequencies Tone Frequency Error: per ITU-T Q.23 ±1.5% Maximum
Tone Level
High Group Low Group: -4 dBm (into 600 Ω) -6 dBm (into 600 Ω)
High vs Low Tone Difference: 2dB +1db
Last Number Redial (Tone/Pulse)
Memory Capacity Memory Retention: 23 digits 8-minutes nominal
Flash Duration: 600 ms ±100 ms
Ringer Loudness: > 70 dBA at 1 meter
Ringer Equivalent (REN): 0.14
Measurements: 10 in x 2.83 in x 3.34 in (25.5 cm x 7.2 cm x 8.5 cm)
Weight: 16.8 ounces (0.476 kg)
Environmental
Temperature Operating Storage:
-4 °F to +140 °F (-20°C to +60°C)
-40 °F to +151 °F (-40°C to +66°C)
Relative Humidity: 5% to 95%
Safety
Telecom Electrical: TNV-3
Safety Classification: IP54
