One basic application is to transmit a frequency over a pair of wires. Typically another test set is needed to measure the frequency at the far end of the cable. This function of transmitting frequencies includes a number of ways as follows:

• Fixed Mode: Transmits a single fixed frequency at a fixed level
• 3-Tone Slope Mode: Transmits frequencies of 404, 1004 and 2804 Hz at 5 seconds interval with a level
• Sweep Mode: Transmits a sweep of user defined frequencies
• Quiet Mode: Places a quiet termination on the circuit

Another basic application is to receive frequencies and perform level measurements. This strictly shows received frequency and level.

Noise and Signal to Noise ratio Measurement, and Impulse Noise Measurement

VF-TIMS module can perform Noise and Signal to Noise ratio measurement, Power Influence and Impulse Noise measurement with different filters placed on the receiver. These filters are C-message, 3.4kHz-Flat, and D. In addition, a C-notch filter is applied for noise measurements with tone. This test is typically done on a cable with a transmit source on the other end of the pair.

Call Placing for Analog circuit testing

VF-TIMS module allows you to place a call on a 2 wire analog POTS circuit with selected dial mode (DTMF, DP, or MF dialing). This will be done connected to a switch in a central office where digits are sent and you can talk and listen with the test on line.

The VF TIMS module can also emulate both CO and PBX for direct inward dialing (loop reverse battery) and ground start signaling.