TS® 25D Test Sets
25501109
25501109
25501109
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AC Impedance

Off-Hook
600 Ω nominal; 300 Hz to 3400 Hz
On-Hook
>120 kΩ; 300 Hz to 3400 Hz

Memory Dialing

Memory Capacity
10 speed dial memories plus one last number redial memory
Digit Capacity
23 digits per memory
Pause Duration
User programmable Default: 4 seconds
Hook Flash Duration
User programmable Default: 600 ms
Automatic Speaker Shut Off Duration
User programmable TS25D default: 5 minutes TS25D CO default: 2 minutes
Battery
9 V alkaline or lithium battery

Rotary Dial Output

Pulsing Rate
10 pps ±1 pps
Break/Make Ratio
60/40
Interdigit Interval
>300 ms
Resistance During Break
>100 kΩ

Electrical

Return Loss
>14 dB (ref 600 Ω)

DTMF Output

Tone Frequency Error
±1. 5 % maximum
Tone Level
–1 dBm combined (typical)
High versus Low Tone difference
2 dB ± 2 dB

DC Resistance

Off-Hook
150 Ω nominal
On-Hook
>1 MΩ

Physical

Measurement
7. 8 in x 2. 7 in x 1. 6 in (20 cm x 6. 8 cm x 4 cm)
Weight
10 ounces (284 g)

Environmental

Temperature Range Operating
32°F to 122 °F (0 °C to 50 °C)
Storage
-40 °F to 150 °F (-40 °C to 65 °C)
Altitude
Up to 10,000 ft (3,000 m)
Relative Humidity
5 % to 95 %