With Noise Solutions From SNC, Your Operation Will Never Miss A Beat. SNC Manufacturing…Making Hi-Tech Work In The Real Telephone World.
Reduce Phone Equipment Or Electrical Interference Problems. Rely On Noise Mitigation Equipment From SNC.
"When the Noise Must be Mitigated or Reduced Now, You'd Better Have a SNIX On Hand."
The SNIX is a specially designed filter for single circuit (pair) applications to help suppress common telephone line problems.
The SNIX is UL listed (UL file E100902).
The SNIX is available in two sizes. The basic SNIX is designed for harmonic frequency attenuation and will handle AC voltages under 30 volts. The Super SNIX is built for 50/60 Hz as well as harmonic frequency attenuation, handling induced AC voltage up to 50 volts (tip or ring to ground). Each SNIX is offered in a weather-resistant housing with two 36 inch long, three-conductor, jacketed, 22 gauge, leads. The three-conductor leads are designated with one as "line" and the other as "eqpt". The green, red and yellow conductors of these represent T1, R1 and ground (G) on the "line" lead and T, R, and G on the "eqpt" lead. (The G is common to the "line" and "eqpt" leads.) The "eqpt" side of the unit contains the "drainage" path to the G wire.
The "line" side of the SNIX is normally directed toward the facility that has the greatest longitudinal AC influence. If the unit is located at a Central Office (CO) or at a station terminal, the "line" side would normally be toward the serving facility (cable, open wire, drop service wire, etc.). If the SNIX is placed in the field, this would usually be toward the station or toward any unshielded portion of the facility. However, due to the ambiguities of power line inductive interference, the opposite orientation might be more effective. SNC recommends installing the SNIX each way to determine the best configuration for your situation. Whether placed at the CO or station end of a circuit, the SNIX should be placed on the protected side (eqpt.) of the primary telephone station protector. If placed in the cable or line facility it should be protected on both the "line" and "eqpt" sides.
Note: The yellow wire or "G" terminal of the SNIX MUST be connected to a low impedance ground.
| Part No. | Description | Approximate Size |
|---|---|---|
| P15170 | Tube SNIX/36" Jacketed Leads (Weatherproof Model) |
6.5" L x 2.5" D (16.5 x 6.3 cm) |
| P15674 | Tube Super SNIX (Weatherproof Model) |
10" L x 2.5" D (25.4 x 6.3 cm) |
| P31023 | Indoor SNIX/36" Jacketed Leads(Indoor Model) |
4" L x 2.9" W x 1.5" D (10.1 x 7.4 x 3.8 cm) |
| P31393 | Indoor SNIX w/RJ-45 Jacks | 8" L x 6" W x 3" D (10.1 x 7.4 x 3.8 cm) |
A company located in Malaysia was experiencing consistent troubles on their Alternative Voice/Data AVD) circuit from Penang to their headquarters in Carrolton, Texas, USA. The circuit with the problems is used for daily transmission of huge volumes of production and inventory data.
Each evening in Penang, the circuit is switched to connect Mostek employees in Penang with the Carrolton PBX. However, they routinely experienced excessive error rates in data mode, and the voice mode was too noisy from Carrolton to Penang. Other companies in the same area of Malaysia were experiencing similar problems. We discovered the four wire circuit was multilode via satellite from the USA to Kuantan, Malaysia, then via several microwave hops to Penang, and finally over a five mile telephone cable. We also found there were multiple problems on the circuit, which confused the diagnosis and complicated the cure.
The solution was to install SNIXs on all send and receive legs. This virtually eliminated two types of interference, greatly reduced a third, and pinpointed the exact nature of the fourth to ease troubleshooting of that problem when it surfaces.
