User Guide

PAMS
Technical Documentation
NME–3
JBD–2 User Guide
Page 6
Issue 1 10/99
Common Functional Description
In the Test Interface Box (JBD–2), the different audio signal paths are
switched with relays. The actual setting is displayed with LED’s. In
addition the original handsfree equipment can be connected.
Two VDA–signals (IGNS and BLD) will be set from the JBD–2. The AMC
and CRM signals are tested from the JBD–2.
The RS–232 from NME–3 can be tested by using WinTesla together with
RS232 test circuit of the Test Interface Box.
WinTesla communicates with the RU and the HS via the MBUS. The
MBUS is connected tramsparently.
A remote connector optionally controls all settings.
Technical Description
RS232–Test /
FLASH_PRG
TEST
FLS–1
VDA–Signals
OFF
OFF
75%
100%
AUDIO
HS–Connector
FLASH
1
2
3 4
AMC CRM
IGNS
BLD
HFMIC SYSTEM HSpath
HFpath
MicSpk HFLine HStest
MBUS
REMOTE
POWER
1– Main Switch (testing/flashing) (FLS–1 for future use)
2– Ignition sense (pulsed / off / on)
3– Back light dimming (on / off / 75% brightness = 50% duty cycle
4– DC power for HF mic activen(above &V)
5– Audio path switch
6– HS connector
Figure 1. Front Panel Map