User Guide

PAMS
Technical Documentation
NME–3
JBD–2 User Guide
Page 12
Issue 1 10/99
Test Setup
RU
JBD–2
HS
TDC–4
PC
OSCI
Signal
Generator
AIN
AOUT
CH1
CH2
HS test
Tests the HS path from the HS.
The audio signals (HSMICP/N & HSEARP/N) are routed via switch matrix
to AOUT and AIN where they are converted with to an unbalanced to
balanced signal and vica versa.
RU
HS
RS232
to PC
AIN AOUT
MIC
SPK
HS
LINE
HSEARP,HSEARN
HSMICP, HSMICN
HSMICP, HSMICN
HSEARP, HSEARN
Switch–Matrix
Figure 8. Routed audio path in HS test