User Guide

NHB–3
Technical Documentation
PAMS
Tuning Instructions
Original 26/97
5
Required Equipment
– PC/AT computer with Service software; see specific section for intructions
on installation and use of Service software.
– M2BUS adapter DAU–2 and other service accessories; see equipment set-
up pictures.
– Multimeter or DVM.
– DCS1900 radio telephone test station or separate measuring equipment as
follows:
– RF generator
– pulse power meter
– spectrum analyzer
– attenuator and branching unit
Equipment Setup
To set up the equipment, connect the M2BUS adapter to the serial port
(RS–232) of the computer. In case you are using a 9–pin serial port (normal
with an AT set) use the mating adapter supplied with the M2BUS adapter. Turn
off the computer before connecting to avoid possible damage to the serial port.
Attach one end of the XCM–1 modular cable to the DAU–2 PC/M2BUS adapter
and the other end to the JBS–7 service box. Use suitable adapter, RF cable
with the proper RF antenna replacement adapter when the covers of the phone
are in place, JBS–16 test frame when the phone covers are off, and attach it to
the phone. Then connect the phone or the cables of test frame JBS–16 to the
service box JBS–7.
While replacing the antenna with the RF adapter, carefully remove the antenna
of the phone and the plastic tube and replace it with the TDA–1 antenna adapt-
er. Do not overtighten the RF adapter or the antenna support threads may
get stripped and replacement of antenna bracket will be necessary.