1088 Series Tone/Pulse Telephone Analyzer

Caller ID simulation.
 Programmable 15 groups of QC limit.
 2 artificial line option.
 DTMF distortion test.
 Input terminator/output impedance 600/900 selectable.
 Make/Break/Loop resistance test.
 On time/Off time test.
 Dual duty cycle setting for bell test.
 Automatic self-calibration.
 Pulse N counts or N+1 counts test.
 Printing feature and RS232 interface.