3) On the front of the units, connect
the 2 BNC cables from the AUX RF out to the AUX RF in of
the units. Connect the 6" SMA cable from the RF Link Port
of the HP8922 to the SMA connector on the HP83220E. This system
that includes the HP8922M with an HP83220E and uses an sma to sma link
port cable cable is called an HP8922P
4) After making sure the rear AC voltage input(s) are set to the
correct AC input, plug in the 83220E and the 8922 and turn on the
system by pressing the front Power button on the HP8922.
5) The display should come on in the "CELL STATUS" screen. If it
does not, you MUST check to see if the 8922P system is in the wrong
compatability mode. This occurs because they are left in this mode when
they are calibrated. Scroll to the Configure screen by using the curser
control knob to scroll to the lower
right to "more" select it ( select
by pressing in and letting go on the
curser control knob) now scroll to "configure" . Select
"configure" and scroll to "compatible" and select 8922P
( 8922P must be
underlined). Now press "CALL CNTL" on the top row of buttons. You will
get the "CALL STATUS" screen.
6) The GSM Phone is connected to the HP8922P system using the RF
IN/OUT (type N) connector at the lower left side of the 83220
unit. The coupled RF I/O connector on the right lower side should be
terminated with a 50 ohm load. Do not connect the phone to any other
connectors as damage could
result. The RF IN / OUT connector is used for all RF tests with the GSM
phone on all bands. You will need a cable with RF coupler to connect
the antenna of the GSM phone to the IN/OUT connector. These are
supplied by the cell phone or test equipment (manufacturers). One
such coupler is the Acterna model 330. It is a desk top pad with cable
that goes to the 8922P system IN/OUT. Nokia has test cables to go from
the phone antenna connector directly to the 8922P (83220E In/Out). The
GSM phone is turned on
with a TEST sim card installed or the GSM phone must be in an RF
Isolation enclosure to insure it will not try to work with any local
cell sites. The Test Sim Card makes the phone work on channels and
systems that are not in use worldwide. If you use an isolation
enclosure, you can test the phone with any sim card.
7) With the GSM phone on, scroll to the Operating Mode on the
"Cell Status" screen and select
the mode (GSM900, E-GSM, DCS1800 or PCS1900) of your phone. Leave the
of the mode in " Active Cell". This will automatically test the phone.
Wait for the phone to indicate it has signal level or service. You may
need to increase the Amplititude depending on the antenna coupler you
are using for that particular phone. Start the test by pressing the
"ORG CALL" button. This will make the
8922P system call your phone and may be the easiest way
to start. When the phone rings, press the answer button on the
phone. You can also press "RCV CALL"- this will allow you to make a
call with your GSM phone to start the test. Once the call
made, in the upper left of the 8922P screen, "CONNECTED" will
You can now check or view your phone performance by scrolling to and
selecting your choice of PHASE
FERQUENCY, POWER RAMP, BIT ERROR, PEAK POWER, SPECTRUM ANALYZER, SCOPE
Screen here, you
can set the "TX Level" on the left side of the screen. The 8922P allows
you to set and view 15 power levels for the GSM phone. We found power
level 0 to make the phone output +30 dbm or 1 watt; power level 10 was
+10 dbm or 10 m
W and power
level 15 to be 0 dbm or 1 m
Return the power level to 10 after checking power level control. Once
again, the power level you see will depend on the loss of your antenna
coupler. Our test used a coupler with a direct connection to the
antenna of the phone.
Phase and Frequency Screen
-, you can view
the phase frequency and frequency errors. You can return from any test
to the Cell Status screen by pressing the "CELL CNTL" button.
Power Ramp Screen
and Top 2 db
- view the leading
trailing edge or top 2 db of the power ramp. Change the time slot on
the lower left of the screen to view each power ramp in each time slot.
(return by pressing "CELL CNTL")
- view bit error as a
PEAK POWER -
view peak power.
Spectrum Analyzer Test Screen
- Here you
can view the Spectrum Analyzer of the 8922 set to the output frequency
of the phone. Here , you can change the Mobile channel while viewing
Oscilloscope viewing audio on "SCOPE"
- View the mobile phone
audio on this oscilloscope display.
This sets up an audio
delay so you can hear your audio from the mic to the earpiece with a
0.5 second (adjustable to 5 seconds) delay. You see the audio
level on the display.
Many of the variables on the screen can be adjusted
in the different test views. Save your screen setup by pressing "SHIFT"
then "SAVE" and use 8 digits to lable your saved screen. The next time
you turn on the 8922, press "RECALL" and select your saved screen. If
you save a screen with "POWERON" , that screen will come on every time
you power on the 8922. End your call by pressing End on
your phone and then "END CALL" on the 8922. Most of thee
screens will allow you to select "HELP" so you can get help from the