DTMF Telephone Trainer
Experiments Included:
Study the Working of Polarity Protection Circuit
Study the working of Voltage Dropper / Hook Detection Circuit
Study the working of Ringer Circuit
Study the working of Keypad Circuit
Study the Working of TONE/PULSE Dialer Section
Study the Working of Speech Circuit
Study the Telephone Trainer Switched Faults
Category: Telecommunication Technology Products
Basic working principle of a telephone is very important in telecom. This trainer helps students understand the functional working of an actual telephone. It provides in depth explanation of the different sections of a DTMF Telephone. Test points are provided to observe different signals which help in understanding different blocks of a Telephone.
Features:
Required Circuits Tested
Each Section Clearly Marked for Input and Output
Polarity Protection
Monolithic Dialer, Ringer and Driver
Each Section Clearly Marked for Easy Understanding
Technical Features:
Operation: Stand Alone
Input Power: From Telephone Line
Handset: Handset connection Port (RJ-11)
Dial Pad: 4×4 Matrix Key Pad
Dialer Section: DTMF (Tone) and Pulse Dialing Redial upto 32 digits with Hook Switch detection
Indication: Line On / OFF Pulse Dialing Indication, Tone Dialing Indication
Control: Ringer Volume Control
Dial Pulse Ratio: 66 to 33 % Make / Break Ratio (approx.)
Test Points: To observe various signals / voltages to understand the working of Telephone
Switch Faults: 4 Nos.
Interconnections: 2 mm gold plated pins
Accessories: Power cord, Experiment Manual and 2mm patch cords