Selective Level Meter SLM3505
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Selective Level Meter SLM3505 Field Portable Power Line Communications Analysis Instrument Functions Single and Dual Frequency Selective Level Meter Impedance Analyzer (LCR Measurements) Frequency Response Analyzer VSWR Meter Signal Generator Oscilloscope Applications Power Line Carrier Alignment & Maintenance Line Trap Alignment & Test Line Tuner Alignment & Test PLC Transmitter & Receiver Test & Set-up Audio Tone Protective Relay Channel Test & Set-up FSK Telemetry Testing The SLM3505 was designed to provide a single instrument solution for the Electric Utility System Protection Engineer and Relay/Communications Technician responsible for the alignment and maintenance of Power Line Carrier, Audio Tone and FSK Communications Systems. This multifunction instrument replaces all 4 existing Power Line Carrier Instruments in one for a fraction of the cost, all in a compact lightweight package. Featured Application Highlights LINE TRAP TESTING LINE TUNER TESTING The SLM3505’s Impedance Analyzer provides an impedance versus frequency plot directly on the display. A technician can therefore view a curve representing the resonant frequency and adjust a trap and tuning pack while viewing the changes in a real time environment, without having to adjust the meter. Since the SLM3505 is a true LCR Meter with the ability to zero out cable impedance, test lead length and separation is no longer a concern. Now the technician can attach long leads to a mounted trap and perform testing while still on the ground, by simply zeroing the capacitance in the leads. The SLM3505 provides a single instrument solution for adjusting a Tuner’s Series inductor and Impedance Matching transformer for minimum reflected power. The 3505 achieves this either with a conventional directional coupler technique or by an innovative impedance comparison technique that achieves the same measurement results without the need for any additional hardware. Using either technique in VSWR mode, a single screen displays the frequency under test, the forward power level, the reflected power level and the % reflected power.

TRANSMITTER/RECEIVER TESTING The SLM3505’s wide frequency range (5Hz to 5MHz) is ideal for setting transmitters and receivers on Power Line Carrier, Audio Tone or Analog Baseband Microwave systems. Unlike many conventional selective level meters, the SLM3505 scans the required frequency range then centres automatically on the largest peak or two largest peaks. The high level output provides up to 2 watts into 50 Ohms for Power Line Carrier applications, while the low level output is ideal for work on audio tone and microwave systems. For the Power Line Carrier user, a high level, high...