R&S SU 4200 Interface Description
6125.0226.12.01 6.10
6.2.11 Headset Connector X21
MDN-S-07-F-S (7 pins)
Fig. 6.11 Headset connector X21
Entry in column D (direction): O = Output I = Input B = Bi-directional
Entry in column T (type): A = Analog D = Digital P = Power
Signal description D T Range Contact Remarks
AF_HEADPHONES+ O A X21.1
AF_HEADPHONES−
O A
0 V to 1 V
rms into
150 load min.
Volume controllable
via potentiometer
X21.2
Earphones output
D_MICROPHONE_IN I A X21.3
D_MICROPHONE_GND I A
1 mV ± 20 dB
Input impedance
200
Automatic level
controlled (ALC)
X21.8
Dynamic microphone
V_MICROPHONE_IN I A 100 mV ± 20 dB
Input Impedance
330
DC 8 V ± 10 %
Automatic level
controlled (ALC)
X21.5 Electret microphone
/PTT_LOCAL I A Contact against GND
= transmit
X21.6 Push-To-Talk input
GND B P X21.7 Return from PTT
SHIELD B P Connector
shield
Cable shielding
WB X22\WB X22 "Radio".doc
Headphone co nnector X23\ Headphone co nnector X23 "Name".doc
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