Operating instructions

ACCEPTANCE TESTING
5-28 46882-311D
Power meter
Splitter
Pad
Pad Pad
RF amplifier
Power
sensor
Signal generator
C2595
RF OUTPUT
SENSOR
INPUT
N TYPE
INPUT
UUT
Fig. 5-19 RF broad band power meter checks
(1) Set the calibrated power source to provide 100 MHz and 100 mW. Press [SELECT] on the
UUT to select N-type input/output, i.e. both LEDs above the N-type socket on. Note the
level on the UUT broad band power meter and check that it is within the stated specification.
(2) Set the calibrated power source to provide 5 mW(+7 dBm). Note the level on the UUT broad
band power meter and check that it is within the stated specification.
(3) Press [SELECT] on the UUT to select N-type input, i.e. only the  LED on. Note the level
on the UUT broad band power meter and check that it is within the stated specification.
(4) Press [SELECT] on the UUT to select the antenna input socket and connect the calibrated
power source to this. Note the level on the UUT broad band power meter and check that it is
within 15% (functional check only).
Notes
(1) The power meter/sensor , splitter and two pads associated with these items form the
calibrated part of the source.
(2) The attenuator pad values are dependent upon the gain of the amplifier used. They
should be chosen so that when the signal generator is set to its maximum output level
the power arriving at the sensor is below +25 dBm i.e. not enough to damage the
sensor.
(3) If a calibrated power source is not available, the UUT power measurement can be
functionally checked using an RF signal generator and power meter by checking the
signal generator level before applying it to the UUT. It should be noted that no
guarantees can be given of the mismatch uncertainties that may be introduced if this
method is used.