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ORDERING
MIC-21T/24C/#
Miniature Interface Converter
# Specify interface connectors:
M-Mfor both male connectors
(Default is female DTE connector)
Specifications are subject to change without prior notice.
250-150-04/99
1999 RAD Data Communications Ltd.
Miniature Interface
Converter,X.21 DTE to V.24 DCE
MIC-21T/24C
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FEATURES
Converts between X.21 DTE andV.24/RS-232 DCE
Operates at data rates up to 200kbps
Has a built-in buffer to accommodatephase differences between
thereceive and transmit clocks of theDCE
No external power required
Easy to install
Miniature, lightweight
APPLICATION
DESCRIPTION
MIC-21T/24C Miniature Interface
Converter, converts between DTEs with
the X.21 interface and DCEs with theV.24/RS-232 interface at
data rates up to
200 kbps
(see Figure 1for the data flow diagram).
MIC-21T/24C performs both physical and
electrical conversion between the two
interfaces. The circuitry is designed toprovide short range
interface, i.e. for
connection of co-located devices.
MIC-21T/24C has a built-in buffer to
accommodate phase differences between
the receive and transmit clocks of the
DCE.
No AC power is required. The device uses
ultra-low power derived from the DTE and
DCE data and control signals
SPECIFICATIONS
Data Rates
Up to 200 kbps
Transmission FormatSynchronous (transparent to protocol
Interface ConnectorsDTE: X.21, 15-pin, female/male
(see Ordering)
DCE: V.24/RS-232, 25-pin, male
Cable Length2m / 6.5 ft
PowerNo AC power required; uses ultra-low
power derived from the DTE and DCE
data and control signals
PhysicalLength: 110 mm / 4.3 inWidth: 53 mm / 2.1 inHeight: 22
mm / 0.9 inWeight: 220g / 7.7 oz(including cable and connector)
EnvironmentTemperature: 0-50C / 32-122FHumidity: Up to 90%,
non-condensing
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X.21 (DTE)Female/Male
V.24 (DCE )Male
Shield Protec tive GN D
Signal GN D 8 7
4
8
3
17
15
2
Signal GND
RT S
D CD
R D
R C
TC
T D
Ck In
Data In Data Out
Ck OutElasticBuffer
C -a
C -a
I-a
R -a
T -a
C -b
C -b
I-b
R -b
T-b
10
10
12
11
9
3
3
5
4
2
D SR
D TR20
6
Figure 1. Data Flow through MIC 21T/24C
Declaration of Conformity
Mfr. Name: RAD Data Communications Ltd.
Mfr. Address: 12 Hanechoshet St.
Tel Aviv 69710
Israel
declares that the product:
Product Name: MIC-21T/24C
Conforms to the following standard(s) or other
normative document(s):EMC: EN 55022 (1987): Limits and
methods of measurement of radio
disturbance characteristics of
information technology equipment.
EN 50082-1 (1992):
Electromagnetic compatibility -
Generic immunity standards for
residential, commercial and light
industry.
Supplementary Information:
The product herewith complies with the
requirements of the EMC Directive 89/336/EEC.
The product was tested in a typical configuration.
Tel Aviv, November 28th, 1995
Haim Karshen
Quality Manager
European Contact: RAD Data Communications
GmbH, Lyoner Strasse 14, 60528 Frankfurt am
Main, Germany
INSTALLATION
Installation of MIC-21T/24C is straightforwand simple, no
strapping adjustments are
required.
Proceed as follows:
1. Plug the X.21 connector directly into DTE.
2. Plug the V.24 connector directly into DCE.
MIC-21T/24C is ready to operate.
