Product Detail
Spectrum Probe
SD 255 (30KHz - 2.5MHz)
The Probes Make ideal pre-qualification measurement tools. Their high sensitivity enables you to pin point and analyse any radiation sources by simple proximity. Quantify the effects of screening and circuit improvements by before-after tests.
A Spectrum Probe converts any standard low performance scope into an effective and sensitive Spectrum analyser. The display is in a standard spectrum analyser format and readings are instantaneous. The SD 255 covers the range 30KHz to 2.5MHz. 
The Spectrum Probes comprise a simplified and miniaturised version of a complete spectrum analyser system built into a specially engineered probe body. Connect the probe to an input on a standard scope to obtain a real time spectrum on the screen.
Using Spectrum Probes immediately opens up a whole new measurement technique. Studying signals in the frequency domain immediately shows characteristics such as distortion, frequency content, modulation and harmonics, virtually impossible to detect with a conventional scope. In addition, the probes are proving to be very effective as EMC PRE QUALIFICATION checking tools.The high sensitivity and small size are perfect for detecting, analysing and locating sources of EMI radiation. In addition, the SD 255 probe is specifically designed to allow use as a conducted RFI detector. Applications include EMC sniffer for hot spots and leakages in screening, checking and adjusting antenna matching, checking signal purity and harmonic content, training, checking for arcing in machinery, monitoring overall radiation levels in production test, location of interferance etc..
The small size and ease of use make them ideal for any service or test engineer who can now have the power of a spectrum analyser in their own tool box!
Although the probes do not attempt to match the performance and power of a conventional spectrum analysers, they do provide an exceptionally quick and easy to use method of accomplishing many of the tasks previously only possible with these far more expensive instruments. In fact for anyone working with almost any branch of electronics, the Spectrum Probe is a most effective and useful tool to have at hand.
Specifications SD 255 Frequency Range <30KHz to > 2.5MHZ Dynamic range 50dB min Vertical output 5mV / dB typ. Vertical logarithmic linearity ± 3 dB Tangential Sensitivity 40µV ± 3dB @ 1MHz
flatness: ± 2dB, 0.05 - 2.5MHzSpurious responses generally -50 dB IF Bandwidth 10 KHz @ -6 dB Max CW input 1 kV dc, linear reduction to 100V @ 500 KHz Sweep rate 20 mS / 2.5 MHz ± 10% Horizontal linearity ± 2% Tip conducted radiation (from swept lo into 50 ohm load) NIL General Power 220V ± 10%, 50Hz, 4W max. 13 Amp mains plug casing to BS1363 Probe weight
56 g Probe size 190mm long, 25mm dia. Power unit weight 260g Power unit size 76 x 50 x 50 mm (Ecluding pins)
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| LAPLACE INSTRUMENTS
LTD 3B, Middlebrook Way, Holt Road, Cromer, Norfolk, NR27 9JR, UK |
Tel: + 44 (0)1263 515160 Fax: + 44 (0)1263 512532 E-mail:tech@laplace.co.uk |
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