X.21 Interface; A2.4 X.21 Interface - AVT MAGIC AE1 DAB+ Hardware & Software Manual

I n t e r f a c e s
P A GE 9 4
A2.4

X.21 interface

The X.21 interface is realised as DTE (Data Terminal Equipment) interface.
The MAGIC AE1 DAB+ can be connected via an X.21 cable directly to any En-
semble Multiplexer which supports the STI-D standard on the X.21 interface
(e.g. R&S DM-001).
FIG. 57
1 8
Connector: 15-pole SUB-D
9 15
Pin
Signal
1 SHIELD
TX (A)
2
CTL (A)
3
4 RX (A)
IND (A)
5
6 SCLK (A)
7 BCLK (A)
GND
8
TX (B)
9
10 CTL (B)
RX (B)
11
12 IND (B)
13 SCLK (B)
BCLK (B)
14
not used
15
a Normally not used
NOTE
The MAGIC AE1 DAB+ Audio Encoder Firmware and PC Software supports
the X.21 operating mode until software version 2.320. With later software re-
leases only the LAN operating mode is possible.
PIN ASSIGNMENT: X.21 INTERFACE
Direction Electrical characteristics
Screen
Transmit Data (A)
Control (A)
Receive Data (A)
Indicate (A)
Signal Element Timing (A)
a
Byte Timing (A)
Ground
Transmit Data (B)
Control (B)
Receive Data (B)
Indicate (B)
Signal Element Timing (B)
a Byte Timing (B)
Type: DTE
Level: V.11, balanced
Out
Data rates: n x 8 kbit/s
Out
n = 1 ... 24
In
Range: 100 m
In
In
In
Out
Out
In
In
In
In