User's Manual

5-3 Appendix
DataNex EMS Wireless, DATA-20 Digital Radio
SRD Step Recovery Diode
STL Studio-Transmitter Link
TDM Time Division Multiplexing
THD Total harmonic distortion
TP Test Point
TTL Transistor-transistor logic
TX Transmitter
Vrms Volts root-mean-square
Vp Volts peak
Vp-p Volts peak-to-peak
VRMS Volts, root-mean-square
VSWR Voltage standing-wave ratio
ZIN Input Impedance
ZOUT Output Impedance
5.2 Conversion Chart
microvolts to dBm (impedance = 50 ohms)
microvolts dBm microvolts dBm
0.10 -127.0 180 -61.9
0.25 -119.0 200 -61.0
0.50 -113.0 250 -59.0
0.70 -110.1 300 -57.4
1.0 -107.0 350 -56.1
1.4 -104.1 400 -54.9
2.0 -101.0 450 -53.9
2.5 -99.0 500 -53.0
3.0 -97.4 600 -51.4
3.5 -96.1 700 -50.1
4.0 -94.9 800 -48.9
4.5 -93.9 900 -47.9
5.0 -93.0 1,000 -47.0
6.0 -91.4 1,200 -45.4
7.0 -90.1 1,400 -44.1
8.0 -88.9 1,600 -42.9