PRAXSYM PAMS, User Manual, Page: 11 / 20

Page 10
P R A X S Y M
Set the Output Level
The transmitter powers up in CW mode with the output level set to -
30 dBm (60 dB attenuation). The output level of the transmitter is
adjusted by changing the attenuation level. -30 dBm output level
corresponds to 60 dB attenuation and +30 dBm (1 watt) corresponds
to 0 dB attenuation.

Depress the ATTN button on the top of the transmitter to toggle
between 0 dB and 60 dB of attenuation.

Depress the MODE button on the top of the transmitter to toggle
between the three operating modes: frequency adjust mode,
power adjust mode and broadband mode. In frequency adjust
mode (power up default), the transmitter output is a CW signal
and the output frequency is changed using the frequency
control knob. In power adjust mode, the output level of the CW
signal can be changed using the frequency control knob.
Depressing the mode button a second time places the
transmitter in broadband mode. See Section 3.4 for a description
of broadband mode. The current setting of the mode button is
displayed on the LCD.

In power adjust mode, depress the F. DIGIT button on the top of
the transmitter to rotate the increment of the FREQUENCY select
knob between 1, 2, and 5 dB steps.
Set Frequency

The transmitter always powers up tuned to 900 MHz.

Depressing the MODE button will take the transmitter to FR ADJ
mode, allowing for frequency adjustment to match the receiver.

Rotate the FREQUENCY adjust knob to tune the transmitter 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.
Backlight
Depress the LIGHT button on the top of the transmitter to toggle the
LCD backlight on/off.