PRAXSYM PAMS, Руководство пользователя, Страница: 9 / 20

Page 8
P R A X S Y M
Monitor mode is included to emulate the function of the TS-31A
system. The TS-31A is the predecessor to PAMS. Monitor mode
uses the 12 position RF switch included with the PAMS. It also
makes use of up to 12 Ground Plane Antennas which are sold
separately.
Initial Set-Up and Power On

Attach one of the antennas to the BNC connector located on
the top of the receiver.

Power-On/Rotate POWER switch to ON position.

The receiver will power on in Signal Strength mode. To select
a different mode, depress the MODE switch to rotate through
Signal Strength, Spectrum Monitor, Shield Level, and Monitor
modes.

Allow the receiver to warm up for 5 minutes before taking
measurement data.
Set Frequency

The receiver always powers up tuned to 900 MHz.

Rotate the FREQUENCY adjust knob to tune the receiver in
1 MHz steps.

Depress the F.DIGIT switch to toggle the step size between
1 MHz and 100 kHz. The current step size is displayed on the
FR ADJ line of the display.

The frequency can be set in either Signal Strength or Shield
Level mode. The receiver will remain tuned to this frequency
as it is rotated through it’s modes of operation. In Spectrum
Monitor mode, this frequency will become the center
frequency of the 12 MHz frequency span. Using the THOLD
arrow keys in Spectrum Monitor mode to move to a different
part of the spectrum will not effect the receiver frequency
when changing modes.

The Spectrum Monitor screen displays 12 MHz of signals at a
time from 864-936 MHz. Along the bottom of the screen the
start, center, and stop frequencies are displayed. The
FREQUENCY select knob is used to move the marker across
the spectrum. The marker’s frequency and the measured
signal level at that frequency are displayed at the top of the
display screen. The THOLD arrows scroll through the 12 MHz
spans of the receivers frequency range.