beautypg.com

Distance to fault (dtf) measurement, Ч10 2 f ∆ ч – Bird Technologies SA-1700-P User Manual

Page 107

background image

Maintenance

97

Maximum Input Signal
(Damage Level)

≥ 22 dBm

Output Power

< 0 dBm

Distance to Fault (DTF) Measurement

Mode:

Internal

Resolution [R]

X-Axis:

Where R=Resolution (meters),
V

p

=Velocity of propagation

,

∆F= Frequency span

Y-Axis:

0.1 dB, 0.01 VSWR

Range

X-Axis:
Y-Axis:

238 x R
0 to –60 dB

Accuracy

X-Axis:
Y-Axis:

± 2% of full-scale range with V

p

= 1

Same as for Return Loss Measurements

V

p

Range:

0.20 to 1.00, or 1.00 to 99%

*

Accuracy only guaranteed when using a Bird Type B Calibration
Combo (See page 101).

Dielectric Constant – The dielectric constant

r

) of the antenna cable

determines the propagation velocity of the cable (V

p

=

1

√ε

r

), which

together with the frequency range of the match data, determines the
maximum distance for which the calculation can be done without
aliasing errors.

R

V

p

3

Ч

8

Ч10

2

F

Ч

---------------------------

This manual is related to the following products: