Product Highlights

The TS22 Series telephone test equipment offers a combination of reliability, durability and expanded utility.

• TS22 Test Set has an amplified speaker for hands-free monitoring
• TS22A Test Set has a two-way speakerphone for true hands-free conversation
• DropSafeTM reliability passes 20-foot drop test
• RainSafeTM protection in severe weather conditions
• Stores nine 18-digit numbers in repertory dialer (speed dialing)

Electrical

• Loop limit: max 2 kΩ at 48 VDC (nominal 20 mA min loop current)

• DC resistance (Talk Mode): ~300 Ω

Monitor Impedance

• TS22: 5 kΩ nominal @1 kHz

• TS22A: 120 kΩ nominal @1 kHz

Rotary Dial Output

• Pulsing rate: 10 pps ±5 pps

• Percent break: 61 % ± 2 %

• Inter‑digit interval: ~1000 ms

• Leakage during break: > 50 kΩ

DTMF Output

• Tone accuracy: ± 1 % max

• Frequency level: –3 dBm combined (typical)

• High‑low tone difference: max 4 dB 

Monitor Amplifier & Speaker

• Power source: 9 V battery, ~25 hrs continuous use

• Speaker Levels (TS22 & TS22A): low, medium, high, off

• Auto shutoff: after 5 min no audio signal

Physical Dimensions

• Size: 10.25 in × 2.69 in × 3.38 in (26 cm × 6.83 cm × 8.57 cm) 

• Weight:

  • TS22: 21 oz (0.595 kg)

  • TS22A: 22 oz (0.624 kg) 

Environmental

• Operating temp: –34 °C to 60 °C (–29 °F to 140 °F)

• Storage temp: –40 °C to 66 °C (–40 °F to 150 °F)

• Altitude: Up to 3,000 m (10,000 ft)

• Humidity: 5 % to 95 % 

Power & Battery

• Contains an embedded 3V lithium battery

• Requires a replaceable 9 V battery for speaker/speakerphone—change yearly or when low to maintain 3 V battery life 

Additional Features

• Tone (DTMF) & pulse dialing

• Last‑number redial, 9‑number memory (18 digits each)

• DTMF level compensation for loop length

• DropSafe™ – withstands a 20‑foot drop

• RainSafe™ – weather-protected housing

• Audible electronic ringer

• Locking mute switch

• Over‑voltage / over‑current protection

• PBX pause button

• Field‑replaceable belt clip

• Continuous polarity LED indicator

• TS22A only: high‑impedance monitor for DataSafe™ & two‑way speakerphone

TS22 test set with 346A plug (Only available outside of Europe)

TS22 test set with 346A plug (Only available outside of Europe)