User Guide

NPM–9
Troubleshooting Instructions
PAMS Technical Documentation
Page 33
Issue 1 02/2002
 Nokia Corporation
Receiver
General instructions
Connect test jig to computer with DAU9S cable or to FPS–8 Flash Prom-
mer with XCS–4 modular cable. Make sure that you have PKD–1 dongle
connected to computers parallel port.
Connect DC power supply to module test jig with FLC–2 cable. Set the
DC supply voltage to 3.9V and set the jumper connector on test jig to
”bypass” position.
Connect RF–cable to the module test jig (MJS–46) RF connector and to
RF signal generator.
Set the phone module to test jig and start Phoenix service sofware.
Initialize connection to phone. Use FBUS driver when using DAU9S and
COMBOX driver when using FPS–8.
Choose product from the menu: File –> Choose product –> NPM–9.
From toolbar set operating mode to ”Local”.
Activate RF controls window from the menu: Maintenance –> Testing –>
RF Controls.
From the RF controls window:
– Select band ”GSM900” or ”GSM 1800” (Default = ”GSM900”)
– Set Active unit to ”Rx” (Default = ”Rx”)– Set Operation mode to
”Continuous” (Default = ”Burst”)
– Set AGC to ”8: FEG ON + 46 dB (Default = ”8: FEG ON + 46 dB”)
– Set Rx/Tx channel to 37 on GSM900 band or 700 on GSM1800 band
(Defaults)
Apply 942.46771 MHz (channel 37 + 67.710 kHz offset) or 1842.86771
MHz (channel 700 + 67.710 kHz offset) –90 dBm signal to the RF–con-
nector (remember to compensate for cable attenuation).
Measuring with an oscilloscope on ”RX_I” or ”RX_Q” this picture should
be seen on a working GSM900 or GSM1800 receiver:
Signal amplitude is 700 mVpp, DC offset 1.35 V and frequency 67 kHz. If
this picture is not seen, continue to the next page.