Rohde & Schwarz GB4000V, Руководство пользователя

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R&S GB4000V Audio Unit
User Manual 6174.7514.02 - 02 62
Audio Interface X5 AUDIO
Figure 27: Audio interface X5, RJ-48 (10 pins).
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
GND B P Ground P X5.1
AUDIO_TX_A O A Nominal
0 dBm ±1.5 dB
into 600
Ω
300 Hz to 3400 Hz
configurable:
600 Ω balanced
60 Ω balanced
P X5.2 Audio Transformer
min. 500 V
Isolation to GND
AUDIO_TX_B O A P X5.3
AUDIO_RX_A I A Nominal
0 dBm ±1.5 dB
into 600
Ω
-30 dBm to +10 dBm
into 600
Ω
settable via SW
300 Hz to 3400 Hz
configurable:
600
Ω balanced
10
kΩ balanced
P X5.4 Audio Transformer
min. 500 V
Isolation to GND
AUDIO_RX_B I A P X5.5
GND B P Ground P X5.6
SQ I D U
min
:
–0.3 V
U
max
: +4.0 V
internal pull-up (10
kΩ)
to +3.3 V
Low = Squelch active
P X5.7
Squelch input,
Contact against
GND = Rx-Signal
Level above SQ-
threshold
GND B P Ground P X5.8
PTT_RADIO O D U
min
:
–0.3 V
U
max
: +30 V
open drain
I
max
: 25 mA
R
I
: ~220
Ω
P X5.9 Push-To-Talk
output,
Contact against
GND = transmit
GND B P Ground P 5.10