Interface Description R&S XU 4200
6.5 6166.5368.02.01
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
*OFF I D Low (external contact
against ground)
= device off
High (or open) = on
Internal pull-up 10 k to
3.3 V, limited to max.
6.8 V
X5.7 Hardware input for
activating/deactivating
transceiver
module
+PTT I D X5.8
–PTT I D
Configurable via
software
X5.9
Pull-up resistors
connected via relay
contact to internal supply
+28 V/ –48 V
Note: The PTT contact of
the radio is low if the radio
is switched off.
Note: It is not
recommended to switch
the PTT Type during the
operation. Make sure the
hardware configuration is
set according to the setup
of the radio.
Type I:
Optocoupler inputs
+PTT and –PTT
V = 12 V to 57 V
I
source = 2 to 13 mA
Type II:
+PTT, pull-up –48 V
Contact against
GND = PTT
I
sink = –4 to –5 mA
R&S standard:
–PTT, pull-up +28 V,
contact against
GND = PTT
I
sink = 3 to 4 mA
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