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Power On Procedure
The Site Master is designed specifically for field environments and applications requiring
mobility. As such, it is a lightweight, handheld, battery operated unit which can be easily
carried to any location, and is capable of up to 2.5 hours of continuous operation from a
fully charged battery. Built-in energy conservation features allow battery life to be extended
over an eight-hour workday. The Site Master can also be powered by a 12.5 Vdc external
source. The external source can be either the Anritsu AC-DC Adapter (P/N 40-115) or 12.5
Vdc Automotive Cigarette Lighter Adapter (P/N 806-62) provided.
Step 1. Press the
ON/OFF key.
The Site Master takes about five seconds to perform a series of self-diagnostic
and adjustment routines. At completion, the screen displays the Anritsu logo, the
model number, and the version of firmware installed.
Step 2. Press
ENTER to continue, or wait for one minute.
The Site Master is now ready for operation.
Calibration Procedure
The following procedure provides the steps necessary to perform Open-Short-Load (OSL)
and Open-Short-Load-Thru (OSLT) calibrations. Calibration is done with the maximum
517 data points and is valid for 130 and 259 data point settings (default is 259). Refer to
Figure 4-1 for setup.
Step 1. Press the
MODE key.
Step 2. Use the Up/Down arrow key to scroll to
FREQ - SWR or RETURN LOSS for
OSL calibration; or scroll to
INSERTION LOSS (+6 dBm) or INSERTION GAIN
(–30 dBm) measurement mode for OSLT calibration..
4-2
Chapter 4 Measurements
HOLD
RUN
START
CAL
AUTO
SCALE
SAVE
SETUP
RECALL
SETUP
LIMIT
MARKER
SAVE
DISPLAY
RECALL
DISPLAY
PRINT
MODE
FREQ/DIST
AMPLITUDE
SWEEP
SYS
ENTER
CLEAR
ESCAPE
ON
OFF
/
1
2
4
5
6
7
8
9
0
3
+
-
.
Site Master S251B
625.0
2500.0
1384.45 MHz
2096.66 MHz
OPEN
LOAD
LOAD
SHORT
CALIBRATION
RF OUTTEST PORT
RF INTEST PORT
TEST PORT CABLE (OPTIONAL)
TEST PORT CABLE (OPTIONAL)
Figure 4-1. One-port Measurement Calibration Setup