The Compact DSP Test Telephone is a Pocket Size Fully Featured Instrument suitable for use by anyone involved in the maintenance and installation of analogue telephone circuits.
The Compact DSP (Digital Services Protection) Test Telephone has been designed to operate safely in situations where telephone wiring may be carrying Digital traffic, Voltage feed to remote electronics or Hazardous voltages that result from fault conditions or misuse of the cable.
In the On Hook mode, on connection to a circuit, the Test Telephone sounds an alarm to alert the user to the presence of voltages above 75V DC. Such voltages are normally present on circuits carrying digital services. If the circuit is active, the user can select MONITOR mode and listen to the sound to determine if the circuit is carrying digital services without disrupting the traffic.
Selecting TALK mode will stop the alarm signal and loop the line without damage to the test set. If the alarm signal persists, it indicates that the voltage on the line is above 120V (nominal). In this case the line is not looped, thus avoiding damage to the test set as well as alerting the user to the presence of voltages.
- Digital Service Protection (DSP)
- Over voltage and current protected
- Excessive voltage alarm
- Mains cross protection (230V AC)
- 3 Position Volume boost
- Microphone Mute
- Hands free through optional headset
- Acoustic Shock Protection
- Battery low warning
- Tone/pulse dialling
- 32 Digit Last number redial
- Flash (Time Break Recall)
- Ground start and earth recall
- PBX Pause
- Super High impedance Polarity
- Super High impedance Monitor
- High Monitor sound level
- Warble ringer
- High impact resistance
- High chemical resistance
- Quick change cord
- Rugged belt clip
- PP3 battery (supplied)
- Basic telephony functions without battery
- Auto power down when not in use
- Polarity Indication
- Supplied with DSP Test Telephone and Manual
Please Note: A commercially available headset can be connected to the Compact to provide hands free operation.
