TS19 features DataSafe™, Tone or Pulse operation, Talk/Monitor capabilities and last number redial. - High impedance DataSafeTM operation in monitor mode - Tone (DTMF) and pulse operation - Last number redial - Polarity indication in talk mode The Fluke Networks TS19 Test Set combines all the essential test set features at an affordable price. This test set was specifically designed for in-house telecom technicians. Its high impedance monitor prevents accidental disruption of service from clipping onto a data line while in monitor mode, thus ensuring the integrity of critical data lines. Features such as tone (DTMF) or pulse operation, talk/monitor capabilities, polarity test button and last number redial make this test set the perfect combination of features and price. Electrical Specifications Loop Limit: 2.4 kΩmaximum at 48 VDC (nominal 15 mA minimum loopcurrent) DC Resistance (Talk Mode): 150 Ωtypical at 80 mA current AC Impedance (Monitor Mode): - Low impedance (Ring position) 600 Ωat 1 KHz typical - High impedance (HI Z position) 100 kΩminimum at 1 KHz Rotary Dial Output: 10 pps .5 pps Pulsing Rate: 60 % ± 2 % Percent Break: 800 ms typical Interdigit Interval Leakage During Break: > 50 kΩ DTMF Output: ±1 % maximum Tone Frequency Error Level per Tone Pair: dBm maximum, - dBm minimum High versus Low Tone Difference: 4 dB maximum