Related Manuals for PRAXSYM PM-2458
Summary of Contents for PRAXSYM PM-2458
- Page 1 2.4/5.3/5.8GHz Broadband Wireless Power Meter PM-2458 User’s Manual...
- Page 2 Warranty concerns or claims should be pursued with the company from which the product was purchased. PRAXSYM warrants that all items will be free from defects in material and workmanship under use as specified in this guide for a period of one year from date of delivery.
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Page 3: Table Of Contents
P R A X S Y M Table of Contents Introduction to the PM-2458 Using the PM-2458 Measuring Transmitter Power Measuring Transmission Line Loss Measuring VSWR of Antenna and Terminations Specifications Appendix — VSWR Table Appendix—Notes Page ii... -
Page 4: Introduction To The Pm-2458
PM-2458 Introduction to the PM-2458 The PM-2458 is a handheld broadband power meter capable of de- tecting forward and reflected power in a microwave radio system. The meter is capable of detecting various types of wireless broad- band modulation schemes in the license exempt 2.4, 5.3, and 5.8 GHz frequency bands. -
Page 5: Using The Pm-2458
P R A X S Y M Using the PM-2458 The PM-2458 ships with a durable nylon case that is secured with hook and loop flaps. The package is designed so that the meter can be used while still in the nylon case. The flaps that cover and protect the meter can be secured behind the unit while it is in use. - Page 6 PM-2458 The meter should always be inserted into the system in the forward power direction. Use the arrow labeled “FORWARD SIGNAL” as a guide when connecting the meter. Pressing and quickly releasing the ON-OFF button turns the meter on. The meter will display “Below Range” if it is not connected to a source that is within it’s dynamic range (0 to 20 dBm).
- Page 7 P R A X S Y M measurement is displayed continuously. The VSWR is displayed for two seconds on the bottom display line and then is replaced for one second by the band indi- cator (“2.4G,” “5.3G,” or “5.8G”) and the in-line attenu- ator setting (“+00,”...
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Page 8: Measuring Transmitter Power
“N” adapter. The meter should be terminated with the 50 Ω load in- cluded in the kit. Turn the PM-2458 on by pressing the ON-OFF button. Select the fre- quency band of interest by pressing the MODE button until the fre- quency list is shown. - Page 9 P R A X S Y M Page 6...
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Page 10: Measuring Transmission Line Loss
(if necessary). Move the PM-2458 to the opposite end of the transmission line. Con- nect the meter as shown on the opposite page. Take another for- ward power reading. Subtract this forward power reading from that taken directly off the back of the transmitter. - Page 11 P R A X S Y M Page 8...
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Page 12: Measuring Vswr Of Antenna And Terminations
Most antenna manufacturers in the license-exempt broadband wire- less market advertise a VSWR of 1.5:1. Therefore, a defective or dam- aged antenna feed should be pretty evident using the PM-2458 as they will indicate a VSWR higher than 1.5:1. It is possible to measure the VSWR (or return loss) of a transmission line termination by placing the meter between it and the radio. - Page 13 P R A X S Y M Page 10...
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Page 14: Specifications
PM-2458 Electrical Specifications Frequency Range: 2.4-2.4835 GHz, 5.150-5.350 GHz, 5.725- 5.850 GHz Forward Power Measurement Range: 0 dBm to 20 dBm (no inline attenuation) 10 dBm to 30 dBm (10 dB inline attenuator) 20 dBm to 40 dBm (20 dB inline attenuator) - Page 15 P R A X S Y M Mechanical Specifications (cont’d) Power Source: 2 AA alkaline batteries – industrial grade Size: 4.9 x 2.7 inches (exc. N connector) Weight: 10 ounces Page 12...
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Page 16: Appendix - Vswr Table
PM-2458 Appendix - VSWR Table Return Loss Reflected Transmiss. VSWR (dB) Power (%) Loss (dB) 1.01 46.1 0.005 0.0002 1.02 40.1 0.01 0.0005 1.03 36.6 0.022 0.0011 1.04 34.1 0.04 0.0018 1.05 32.3 0.06 0.0028 1.06 30.7 0.082 0.0039 1.07 29.4... - Page 17 P R A X S Y M Return Loss Reflected Transmiss. VSWR (dB) Power (%) Loss (dB) 1.38 15.9 2.55 0.112 1.39 15.7 2.67 0.118 15.55 2.78 0.122 1.41 15.38 0.126 1.42 15.2 3.03 0.132 1.43 15.03 3.14 0.137 1.44 14.88 3.28 0.142...
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Page 18: Appendix-Notes
PM-2458 Notes Page 15... - Page 19 P R A X S Y M Notes Page 16...
- Page 20 P R A X S Y M 31110 Rev A P/N 900-000002-001...
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