Selective Level Meter | SLM 3505

Selective Level Meter | SLM 3505

Selective Level Meter – Overview

The Selective Level Meter SLM3505 was designed to provide a single-instrument solution for the Electric Utility System Protection Engineers and Relay/Communications Technicians 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 for a fraction of the cost. All in a compact lightweight package.

Selective Level Meter SLM 3505 Features

  • Frequency range 5Hz to 5MHz
  • Selectable inputs up to 300 Vpk
  • Low and High-level generators
  • Dual-frequency SLM mode
  • Impedance analyzer
  • VSWR Meter
  • Oscilloscope mode
  • Line trap/tuner test
  • Mains / 12 volt dc / internal battery operation
  • Supplied complete with rugged flight case

Description

Selective Level Meter SLM 3505

Technical Specifications

Selective Level Meter
Frequency range 5Hz to 5MHz
Frequency accuracy ±5ppm over all temperature range
High Accuracy Option F <±2ppm over all temperature range
Magnitude accuracy <1KHz: 0.05% rng + 0.05% rdg +   50uV.
<10KHz: 0.05%rng+0.05% rdg +0.01%/KHz + 50uV. rdg   +0.01%/KHz
<5MHz: 0.05%rng+0.25% + 50uV. rdg +0.001%/KHz + 50uV.
Inputs (Unbalanced) Type & Connection Differentially isolated & isolated BNC
Bandwidth settings 3 | 25 | 100 | 1.95k | 3.1kHz &   wideband
Measurement Units V | dBm | dBu | dB0
(Traditionally referred to   as dB in PLCC applications)
Accuracy of Level Measurement at 0dB(m) ± 0.3 dB(m)

High voltage input

Max input ±300V peak
Input impedance 1MΩ ±5% // 30pF

50Ω input

Max input 10W (22V rms)
Input impedance 50Ω ±1% // 30pF

75Ω input

Max input 10W (28V rms)
Input impedance 75Ω ±1% // 30pF

Low level input

Max input ±10V peak
Input impedance 50Ω ±1% //   30pF
75Ω ±1% //30pF
600Ω ±1% // 30pF
1MΩ ±5% // 30pF

Input (Balanced)

Max input ±10V peak
Input impedance As Low level input
Input type differential
Input connection 3 x 4mm connectors – positive, negative, and   ground

Signal generator

Generator type Direct Digital Synthesis (DDS) |  single frequency or sweep
Generator waveforms Sinewave | Square | Triangle | White noise
Frequency accuracy ±5ppm overall temperature range
High Accuracy Option F <±2ppm overall temperature range
Magnitude accuracy ± 1% ± 1%/MHz
Frequency Setting 5Hz or better up to 999.999Hz in 1mHz steps
1kHz to 999.999kHz in 100mHz steps
1MHz to 5MHz in 1Hz steps
Resolution 6 Digits
Output Level Range for 0dB(m) Selectable in 0.001dB(m) steps between:
Low Output -40dB(m) to +24dB(m)
High   Output -7dB(m) to +35dB(m)

Hi level output

Frequency range 10kHz to 5MHz
Output level 2W into 50Ω (10V rms)
Output impedance 50Ω ±2% 75Ω ±2% (Option)
Low-Level Output
Frequency range 5Hz to 5MHz
Output level 5V rms into high impedance
Output impedance 50Ω +/-2% +24dBm
75Ω +/-2% +22dBm
600Ω +/-2% +15dBm
Frequency Shift Delay Timer 0 to 1s (1ms steps)

Impedance Analyzer

Impedance range 100 milli Ohm to 100 kilo Ohm
Accuracy <10KHz: 1% rdg.
<1MHz: 1%   rdg + 0.005%/KHz + 50uV.
<5MHz: 5% rdg + 0.002%/KHz + 50uV.
Features LCR   Measurements (Inductance, Capacitance, Resistance, tan delta, QF)
Lead   compensation (zero lead function) Impedance versus Frequency Curve

Oscilloscope 

Sample rate: 5 Msamples/s
Timebase: 5us/div to 5s/div
Trigger: auto, normal or single shot
Pretrigger: none, 25%, 50%, 75%
Inputs ranges: as Selective Level Meter
Second Input ±10V peak 1MΩ ±5% // 30pF

VSWR Meter

Accuracy 1% of reading up to 1MHz
5% of reading above 1MHz to 5MHz for power measurements (forward and reflected) at VSWR = 3.
Features Forward Power | Reflected Power | % Reflected Power, & Frequency under test visible on one screen.

Frequency Response Analyzer 

Frequency range 5Hz to 5MHz
Gain Accuracy dB 0.02dB < 1kHz
0.05dB <   10kHz
0.1dB + 0.001dB/kHz
Phase Accuracy   ° 0.02° < 10kHz
0.02° +   0.003°/kHz

General Specifications

Sweep Steps Up to 2000 steps in all sweep functions
Set-up and   Data Storage Up to 1000 analyzer setups,  readings, and sweep results can be stored
Interface USB | RS232 | LAN
Real-time clock Time and Date Stamp for data stores
Data Storage Internal 1Gb flash
External USB pen port
Display Type 5.7” ¼VGA color high brightness backlight
Display Resolution 6 digit frequency | 5 digit voltage | 4 digit dBm
Size approx 305 x 230 x 45mm “tablet” style
Weight 2.3Kg
Power source 9 – 18V @ 3A AC adapter or 12V dc  from car or external batteries
Battery type and Battery life Re-Chargeable Lithium-Ion Up to 5 Hours
Temperature range -5 to +50°C

Selective Level Meter | SLM 3505

Additional information

Option

Selective Level Meter 50Ω-75Ω, Selective Level Meter 600Ω, Selective Level Meter Option F version

Brand

Newtons4th

Newtons 4th logo

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