Rohde & Schwarz GB4000V, Руководство пользователя

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R&S GB4000V Audio Unit
User Manual 6174.7514.02 - 02 58
Headset Instructor X2 HS INSTR (VAR03)
Figure 24: Headset Instructor X2, recessed socket, 7-way, NF7.
Column D (Direction): O = Output I = Input B = Bidirectional
Column T (Type): A = Analog D = Digital P = Power
Column TI (Test Instructions): P = Test Value T = Trimming Value D = Type Test Value
E = Setting Value
Signal Description D T Range TI Contact Remarks
Headphone O A Max. 2 V / 200
Ω
(300 Hz to 3.4 kHz)
S/N > 60 dB
K < 0.5 %
D X2.A Headphone
GND B A Ground P X2.B
D_MIC_INPUT I A 1 mV ±20 dB
Input impedance 200

Ω
(300 Hz to 3.4 kHz)
Automatic level
controlled (ALC)
X2.C Dynamic
microphone
GND B A Ground P X2.D
V_MIC_INPUT I A 100 mV ±20 dB
Input impedance 330
Ω
(300 Hz to 3.4 kHz)
8 V DC ± 10 %
Automatic level
controlled (ALC)
–
X2.E Electret microphone
/PTT_IN I D U
min
:
–0.3 V
U
max
: +4.0 V
internal pull-up (10
kΩ) to
+3.3 V
Low = PTT ON
P X2.F Push-To-Talk input,
Contact against
GND = transmit
GND B A Ground
–
X2.G