Rohde & Schwarz M3SR Series 4100, Service Manual, Page: 62 / 138

R&S M3SR Series 4100 HF Transceivers Front Panel - Function
6124.9007.82.01 1.26
Fig. 1.11 Front Panel, Block Diagram
Power supply
+ 5V
+ 10.5V
- 10.5V
+ 3.3V
S3
S2
S1
FP_HEADSET_VOLUME
FP_SPEAKER_VOLUME
FP_INT_SPEAKER
Battery LED (green)
AC/DC LED (green)
ON/OFF key
Squelch LED (yellow)
Go LED (yellow)
RF LED (yellow)
Speaker extern / intern
Erase
Volume Headset P1
Volume Headset P2
Speaker internal 0.3 W, 25 Ohm
Headset Audio out 6 . 3mm jack
Headset Audio out
Headset Micro 1 in
Headset Micro 2 in
PTT in
X3
EMV
X6
X7
X7
X7
X7
EM C
X5
Fill Gun
Micro-
preamplifier
with variable
compression
Temp.-
monitor
I C
[°C]
FP_6.3_JACK_PHONES
FP_HEADSET_PHONES
FP_GAIN CONTROL
FP_MIC_OUT
FP_PTT
I C SDA/SCL
RS 232
Co
n
ne
ctor
X
2
to
M
o
th
e
rb
o
ard
2
2
X2
ICN-S4100-A-E11100-R-D0894-00208-A-01-1