YOU'RE HEARD, LOUD AND CLEAR. Instruction Manual for 21-Series T-Pass® Filters (except 800 MHz) Manual Part Number 7-9040 8625 Industrial Parkway, Angola, NY 14006 Tel: 716-549-4700 Fax: 716-549-4772 sales@birdrf.com www.bird-technologies.
Warranty This warranty applies for one year from shipping date. TX RX Systems Inc. warrants its products to be free from defect in material and workmanship at the time of shipment. Our obligation under warranty is limited to replacement or repair, at our option, of any such products that shall have been defective at the time of manufacture. TX RX Systems Inc. reserves the right to replace with merchandise of equal performance although not identical in every way to that originally sold. TX RX Systems Inc.
Manual Part Number 7-9040 Copyright © 1991 TX RX Systems, Inc. First Printing: May 1986 Version Number Version Date 1 5/10/86 2 5/24/89 3 12/13/91 Symbols Commonly Used WARNING ESD Elecrostatic Discharge CAUTION or ATTENTION Hot Surface High Voltage Electrical Shock Hazard Use Safety Glasses Bird Technologies Group NOTE Important Information TX RX Systems Inc.
TX RX Systems Inc.
TX RX Systems Inc.
TX RX Systems Inc.
POWER IN/OUT VS. INSERTION LOSS The graph below offers a convenient means of determining the insertion loss of filters, duplexers, multicouplers and related products. The graph on the back page will allow you to quickly determine VSWR. It should be remembered that the field accuracy of wattmeter readings is subject to considerable variance due to RF connector VSWR and basic wattmeter accuracy, particularly at low end scale readings.
POWER FWD./REV. VS. VSWR 500 400 V S W R 300 200 100 FORWARD POWER (WATTS) 1.1:1 50 40 1.15:1 30 1.2:1 20 1.25:1 1.3:1 10 1.4:1 5.0 4.0 1.5:1 3.0 1.6:1 1.8:1 2.0 2.0:1 1.0 2.5:1 3.0:1 0.5 40 20 10 8.0 6.0 4.0 2.0 1.0 0.8 0.6 0.4 0.2 REFLECTED POWER (WATTS) FOR OTHER POWER LEVELS, MULTIPLY BOTH SCALES BY THE SAME MULTIPLIER TX RX Systems Inc.
Power Ratio and Voltage Ratio to Decibel Conversion Chart Example-- Given a gain of +9.1 dB or a loss of -9.1 dB Loss or Gain Power Ratio Voltage Ratio +9.1 dB 8.13 2.85 -9.1 dB 0.12 0.35 - dB + - dB + Voltage Ratio 1 0.99 0.98 0.97 0.96 Power Ratio 1 0.98 0.96 0.93 0.91 dB 0 0.1 0.2 0.3 0.4 Voltage Ratio 1 1.01 1.02 1.04 1.05 Power Ratio 1 1.02 1.05 1.07 1.1 Voltage Ratio 0.56 0.56 0.55 0.54 0.54 Power Ratio 0.32 0.31 0.3 0.3 0.29 dB 5 5.1 5.2 5.3 5.4 Voltage Ratio 1.78 1.8 1.82 1.84 1.
Return Loss vs. VSWR Watts to dBm Return Loss VSWR Watts dBm 30 1.06 300 54.8 25 1.11 250 54.0 20 1.20 200 53.0 19 1.25 150 51.8 18 1.28 100 50.0 17 1.33 75 48.8 16 1.37 50 47.0 15 1.43 25 44.0 14 1.50 20 43.0 13 1.57 15 41.8 12 1.67 10 40.0 11 1.78 5 37.0 10 1.92 4 36.0 9 2.10 3 34.8 2 33.0 1 30.
8625 Industrial Parkway, Angola, NY 14006 Tel: 716-549-4700 Fax: 716-549-4772 sales@birdrf.com www.bird-technologies.
