User guide

Maintenance
131
Measurement Uncertainty (after 1 display refresh)
*
Return Loss Determined graphically from composite of
source VSWR, instrumentation error, and
directivity.
Refer to the figures on page 133, page 134,
and page 135.
VSWR Calculated from Return Loss
* Accuracy only guaranteed when using the Bird Calibration Combo
listed in this manual (See page 137).
Distance to Fault (DTF) Measurement
Mode Internal
Resolution [R]
X-Axis
Where R = Resolution (meters), V
p
= Velocity
of Propagation, ∆F = Frequency Span (MHz)
Y-Axis 0.1 dB, 0.01 VSWR
Range
X-Axis
Y-Axis
number of data points (238, 475, or 949) 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 to 99%
Power Measure Mode
Function Displays power from Bird 5010B, 5011, 5011-
EF, VSWR Alarm, and ACM power sensors
(specifications determined by sensor)
General
Data Storage Non-volatile internal memory can store 300
traces in 238 data point / trace format, 250
traces in 475 data point format, or 125
traces in 949 data point format. Traces may
be recalled and displayed in any of the
display formats.
PC/Remote Power Sensor Interface Port
Connector
Protocol
Female DB-9, compatible with PC
serial port
Serial RS-232, 9600 baud, 8 data bits, 1 stop
bit, no parity, and no handshake
R 150
V
p
∆F
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