The single board trainer with in built I.C. regulated dual channel + & -12V and +5V power supply, Four nos. of phone for extension line, P & T line simulator helps to study the working principle & circuitry.
The trainer helps to study the following features :
- Experiment on Tone Generator & Ringer.
- Experiment on CO Line Interface Module.
- Experiment on Extension Module.
- Experiment on Dial tone.
- Many more operations.
Salient features :
- P & T Line simulator.
- Four nos. phone.
- Distinctive Ringing.
- DTMF / Pulse.
- Multiple trunk groups.
- Music on hold.
- Paging with customer provided amplifier & speaker.
- Retention of Programming during power failure.
- DOT line busy indication on the Exchange.
- Easy installation.
- No Air – Conditioning required.
- And many more features.
Technical Specifications :
- Technology : Microprocessor based.
- Microprocessor : Z 80 Fully non blocking
- Speech path : Program controlled
- Memory : 8 K RAM , 32 K RAM
- Longitudinal Balance : 60 dB.
- Loop Resistance :
- Extension 600 ohm &
- CO Line 1200 ohm
- Insertion Loss :
- Extension to Extension : Less than 2 dB at 1K Hz
- Extension to CO Line : Less than 1 dB at 1K Hz
- Cross talk attenuation : Not less than 70 dBm.
- Idle channel noise : Not less than 70 dBm
- Dial Pulse ratio : 10 pps +10 %