2
Operating Your Instrument
100
Keysight 53147A/148A/149A Operating and Programming Guide
7 When you move the focus to the last digit of the frequency value (the one
furthest to the right), an additional flashing indicator ( ) appears at the
right end of the display, and the indicator to the left of the frequency value
( ) stops flashing.
This indicates that, in addition to being able to use the up and down arrow
keys to adjust the value of the flashing digit in the frequency value, you can
also press the right arrow key to move the focus from the last digit of the
frequency value to the first digit of the calibration-factor value.
NOTE
In instruments that have firmware that is modified as described in
Service Note
53147/8/9A-01
, you can change the instrument’s setting to match the 50 MHz
reference calibration factor (RCF) of your power head. When the frequency
reading on the display is 00.05 GZ (50 MHz), you can change the RCF to the one
for your particular power head. After doing this, always re-zero and recalibrate
the instrument (see Steps 7 through 9 on page 96).
All units shipped from the factory after August 2001 have the modified firmware
installed. To determine whether your instrument has the modified firmware,
display the menu as described in
The instrument’s model number is listed between the
Preset
and
Op Hours
menu
items. Press the right arrow key once to display the model number. If your
instrument’s model number is any number lower than 2060166-99, you should
obtain and install the firmware kit (Keysight part number 53147-80018).
dB
dBm
Watts
mW
uW
%
Ch 2
Freq
Offset
Avg On
Pwr
Offset
Содержание 53147A
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