Patton electronic TV Converter Box IC V24 User Manual

Doc#: 172001UA  
Part#: 07M2021P-A  
B
INTERFACE CONVERTER, V.24 TO X.21  
2021P  
(CTS IC-V.24/X.21)  
INSTALLATION AND OPERATIONS MANUAL  
February 21, 2000  
AnISO-9001  
Copyright© 2000 Patton Electronics Co., All Rights Reserved  
CertifiedCompany  
 
172001UA  
PROPRIETARY NOTICE  
The information contained herein is proprietary and confidential to Patton Electronics Co.  
Any reproduction or redistribution of this publication, in whole or in part, is expressly  
prohibited unless written authorization is given by Patton Electronics Co.  
SERVICE  
All warranty and non-warranty repairs must be returned freight prepaid and insured to  
Patton Electronics. All returns must have a Return Materials Authorization number on the  
outside of the shipping container. This number may be obtained from Patton Electronics  
Technical Services at:  
Tel: (301) 975-1007;  
NOTE: Packages received without an RMA number will not be accepted.  
Patton Electronics’ technical staff is also available to answer any questions that might  
arise concerning the installation or use of your Patton MSDs. Technical Service hours:  
8AM to 5PM EST, Monday through Friday.  
PUBLICATION NOTICE  
This manual has been compiled and checked for accuracy. The information in this manual  
does not constitute a warranty of performance. Patton reserves the right to revise this  
publication and make changes from time to time in the content thereof. Patton assumes  
no liability for losses incurred as a result of out-of-date or incorrect information contained  
in this manual.  
RADIO AND TV INTERFERENCE  
The Patton devices generate and use radio frequency energy, and if not installed and  
used properly—that is, in strict accordance with the manufacturer’s instructions—may  
cause interference to radio and television reception. The Patton devices have been  
tested and found to comply with the limits for Class A computing devices in accordance  
with the specifications in Subpart J of Part 15 of FCC rules, which are designed to  
provide reasonable protection from such interference in a commercial installation.  
However, there is no guarantee that interference will not occur in a particular installation.  
If the Patton devices do cause interference to radio or television reception, which can be  
determined by disconnecting the cables, the user is encouraged to try to correct the  
interference by one or more of the following measures: moving the computing equipment  
away from the receiver, re-orienting the receiving antenna, and/or plugging the receiving  
equipment into a different AC outlet (such that the computing equipment and receiver are  
on different branches).  
Canadian EMISSIONS  
This digital apparatus does not exceed the Class A limits for noise emissions from a  
digital apparatus set out in the Radio Interference Regulations of the Canadian Department  
of Communications.  
Le present appareil numerique n’emet pas de bruits redioelectriques depassant les limites  
applicables aux appareils numeriques de la Class A prescites dans le Reglement sur le  
brouillage redioelectrique edicte par le ministere des Communications du Canada.  
Copyright© 2000 Patton Electronics Co., All Rights Reserved  
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CHAPTER 1 - Operation  
The Patton 2021P (CTS TCB-V.24/X.21) is an EIA RS-232 to CCITT X.21  
interface converter with a built in tail circuit buffer, allowing modem to  
modem interconnection. The interface converter operates bi-directionally.  
DCE / DTE selection of each port permits interfacing an RS-232 terminal or  
modem to an X.21 terminal or modem. This interface converter can satisfy  
all interface conversion requirements. This adapter is ideal for High Speed  
Modems since it can operate at up to 128Kbps. Connection of two terminal  
devices is not supported because internal clocking is not provided by this  
device.  
Devices can be separated up to 4000 feet away from the interface con-  
verter on the balanced interface side and RS-232 devices can be separated  
up to 50 feet away from the interface converter. The unit is supplied with a  
female DB-25 for the RS-232 port and a female DB-15 for the CCITT X.21  
port.  
The interface converter is housed in a sturdy aluminum enclosure and has  
an internal 110/220VAC switch selectable power supply. Sixteen of the  
interface converters will also fit into the MCS-16 card rack for convenient  
data center applications.  
The unit can operate on standard power found in most countries.  
X.21 Modem  
IC-V.24/X.21  
Typical Application  
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Note: Hazardous voltages are present when the equipment cover is removed.  
Installation and setup shall be performed by qualified service personnel only.  
CHAPTER 2 - SETUP AND INSTALLATION  
Installation  
Set the switches to match the required configurations based on the  
diagrams below. The cabling between each device and the interface  
converter must be terminated with male connectors. J1 is the RS-232 /  
V.24 interface and J2 is the X.21 interface. The IEC connector is provided  
to interface to the power plug required in the country of use. Insure the  
110/220VAC switch is set correctly for the line voltage in use prior to  
applying power to the interface converter.  
Selection of DTE/DCE  
To connect an RS-232 terminal type device (DTE) to an X.21 Modem type  
device (DCE), connect the terminal to J1 and the Modem to J2. Move  
SW1 and SW2 to the DCE position, and SW3, SW4 and SW5 to the DTE  
position, as shown in Fig. 1.  
X.21 DTE  
V.24 DCE  
R - 4, 11  
T - 2, 9  
RXD - 3  
TXD - 2  
X.21 DCE  
V.24 DTE  
Buffer  
RXC - 17  
TXC - 15  
S - 6, 13  
C - 3, 10  
I - 5, 12  
RTS - 4 / DTR - 20  
CTS - 5 / DCD - 8  
JP5  
V.24 INTERFACE  
DTE  
DCE  
J1 (RS-232) Is a DCE, and  
MUST Connect to a  
Terminal (DTE)  
J2 (X.21) Is a DTE, and  
MUST Connect  
Power  
DTR /RTS  
DCD / CTS  
T
R
C
I
J1  
RS-232  
SW1  
S
SW2  
JP6  
to a Modem (DCE)  
DCE  
DTE  
J2  
X.21  
SW3  
SW4  
SW5  
JP1 JP2 JP3  
Signal JP4  
to  
Chassis  
Ground  
Factory Test Straps  
Must be Installed for Unit To  
Operate Correctly  
J3  
X.21 INTERFACE  
Figure 1.  
*NOTE: All clocks in the communication system must be frequency locked. One and  
only one clock must be selected as master for the system. All other clocks must be  
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slaved to this clock.  
To connect a X.21 terminal type device (DTE) to an RS-232 Modem type  
device (DCE), connect the terminal to J2 and the Modem to J1. Move  
SW1 and SW2 to the DTE position, and SW3, SW4 and SW5 to the DCE  
position, as shown in Fig.2.  
X.21 DCE  
V.24 DTE  
T - 2, 9  
TXD - 2  
TXC - 15  
X.21 DTE  
V.24 DCE  
Buffer  
S - 6, 13  
RXC - 17  
RXD - 3  
R - 4, 11  
I - 5, 12  
CTS - 5 / DCD - 8  
RTS - 4 / DTR - 20  
C - 3, 10  
JP5  
V.24 INTERFACE  
DTE  
DCE  
J1 (RS-232) Is a DTE, and  
MUST Connect to a  
Modem (DCE)  
J2 (X.21) Is a DCE, and  
MUST Connect  
Power  
DTR /RTS  
T
R
C
I
J1  
RS-232  
SW1  
DCD / CTS  
JP6  
S
to a Terminal (DTE)  
SW2  
DCE  
DTE  
J2  
X.21  
SW3  
SW4  
SW5  
JP1 JP2 JP3  
Signal JP4  
to  
Chassis  
Ground  
Factory Test Straps  
Must be Installed for Unit To  
Operate Correctly  
J3  
X.21 INTERFACE  
Figure2.  
To connect a X.21 Modem type device (DCE) to an RS-232 Modem type  
device (DCE), connect the X.21 Modem to J2 and the V.24 Modem to J1.  
Move SW1, SW2, SW3, SW4 and SW5 to the DTE position, as shown in  
Fig.3.  
X.21 DTE  
V.24 DTE  
T - 2, 9  
RXD - 3  
RXC - 17  
X.21 DCE  
V.24 DCE  
Buffer  
S - 6, 13  
XTXC - 24  
TXD - 2  
R - 4, 11  
C - 3, 10  
I - 5, 12  
CTS - 5 / DCD - 8  
RTS - 4 / DTR - 20  
2-2  
 
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JP5  
V.24 INTERFACE  
DTE  
DCE  
J1 (RS-232) Is a DTE, and  
MUST Connect to a  
Modem (DCE)  
J2 (X.21) Is a DTE, and  
MUST Connect  
Power  
DTR /RTS  
DCD / CTS  
T
R
C
I
J1  
RS-232  
SW1  
S
to a Modem (DCE)  
SW2  
JP6  
DCE  
DTE  
J2  
X.21  
SW3  
SW4  
SW5  
JP1 JP2 JP3  
Signal  
to  
JP4  
Chassis  
Ground  
Factory Test Straps  
Must be Installed for Unit To  
Operate Correctly  
J3  
X.21 INTERFACE  
Figure 3 (Factory Default Setting)  
Equipment Grounding  
JP4 provides grounding interconnection in those systems requiring a  
connection between Frame Ground and Signal Ground. If signal ground  
and chassis ground interconnection is desired, install the jumper on JP4.  
LED Indicators  
The Following LED indicators are provided for diagnostics: Power, Transmit  
Data (T), Receive Data (R), Control (C), Indicate (I) and Signal Timing (S).  
Factory Test Straps  
The Factory Test Straps JP1, JP2 and JP3 must be installed for proper  
operationoftheinterfaceconverter.  
Signal Crossover  
JP5 controls selection of DTR or RTS as the active V.24 control signal.  
JP6 controls selection of the DCD or CTS as the active V.24 control signal.  
The selection of DTE or DCE on the two interfaces will determine which  
X.21 signal is connected to which V.24 control signal.  
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APPENDIX  
TECHNICAL SPECIFICATIONS  
Applications  
RS-232toCCITTX.21interface  
conversion  
Front Panel  
Indicators: ... Power,Transmit  
Data, Receive Data,  
Control,Indicate,  
Capacity  
OneRS-232Channel  
OneCCITTX.21Channel  
SignalTiming  
Buffer  
Power Requirements  
110/220VAC, 50/ 60Hz, 0.16/  
.08A, switch selectable Power  
Supply  
Bidirectional 8-bit ring buffer  
Data Format  
TransparenttoData  
Data Rates  
Environmental  
Up to 128Kbps  
OperTemp: ...... 32° to 122°F (0°  
to 50°C)  
Electrical Interface  
RS-232 and V.11  
Rel Humidity: ... Up to 90% non-  
condensing  
RS-232 Physical Interface  
Altitude: ........... 0 to 10,000 feet  
Female DB-25 (V.24) Connector  
Dimensions  
Balanced Physical Interface  
Female DB-15 (V.11) Connector  
Height: .... 2.00 inches (5.08cm)  
Width: ..... 8.80 inches (22.35cm)  
Length: .... 9.80 inches (24.89cm)  
DCE / DTE Configuration  
Switch Selectable  
Weight  
2.25 lbs (1.02Kg)  
Enclosure  
Aluminum Shell or 1010R16/P/UI  
(CTSMCS-16C)CardRack  
Assembly  
A-1  
 
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Shield (common)  
Transmit(A) (from DTE)  
Control(A) (from DTE)  
1
2
3
4
5
6
7
8
Transmit(B) (from DTE)  
Control(B) (from DTE)  
Receive(B) (from DCE)  
Indication(B) (from DCE)  
Signal Timing(B) (from DCE)  
9
10  
11  
12  
13  
14  
15  
Receive(A) (from DCE)  
Indication(A) (from DCE)  
Signal Timing(A) (from DCE)  
GND (common)  
X.21 Interface Pins Supported  
Shield (common) 1  
Transmit Clock (from DCE)  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
Transmit Data (from DTE)  
Receive Data (from DCE)  
Request to Send (from DTE)  
Clear To Send (from DCE)  
Data Set Ready (from DCE)  
Signal Ground (common)  
2
3
4
Receive Clock (from DCE)  
5
6
7
Data Terminal Ready (from DTE)  
Data Carrier Detect (from DCE)  
8
9
10  
11  
12  
13  
25 External Transmit Clock (from DTE)  
V.24 Interface Pins Supported  
A-2  
 
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7622 Rickenbacker Drive  
Gaithersburg, MD 20879  
Sales: 301 975-1000 Support: 301 975-1007  
 

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