Black Box Network Card IC481A R2 User Manual

NOVEMBER 1995  
IC483A  
IC483AE  
IC483C  
IC481A-R2  
IC481C-R2  
V.35 RS-422 Interface Converter  
Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500)  
FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746  
Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018  
CUSTOMER  
SUPPORT  
INFORMATION  
 
V.35 RS-422 INTERFACE CONVERTER  
TRADEMARKS USED IN THIS MANUAL  
Any trademarks mentioned in this manual are acknowledged to be the property of the trademark owners  
 
CONTENTS  
Contents  
Chapter  
Page  
1. SPECIFICATIONS......................................................................................................................................4  
2. INTRODUCTION ......................................................................................................................................5  
3. INSTALLATION.........................................................................................................................................6  
3.1  
3.2  
DIP Shunt Settings........................................................................................................................6  
LEDs ..............................................................................................................................................8  
4. GROUND STRAP AND PIN CONNECTIONS ........................................................................................9  
4.1  
4.2  
Ground Strap ................................................................................................................................9  
Pin Connections..........................................................................................................................10  
3
 
V.35 RS422 INTERFACE CONVERTER  
1. Specifications  
Speed —  
Up to 2.5 Mbps  
Maximum  
Transmission  
Rate —  
Approximately 2.455 Mbps  
RS-422, V.35  
Interface —  
Connectors —  
IC481A-R2: RS-422: (1) DB37 female (pinned to RS-449 specifications);  
V.35: (1) male 34-pin “M” block  
IC483A:  
RS-422: (1) DB37 female (pinned to RS-449 specifications);  
V.35: (1) female 34-pin “M” block  
Controls —  
Jumpers for Pin H Support  
V.35 port DTE/DCE jumper-selectable  
RS-422 port DTE/DCE jumper-selectable  
Maximum Storage  
Temperature —  
158°F (70°C)  
Maximum  
Operating  
Temperature —  
122°F (50°C)  
Power —  
IC481A-R2, IC483A: 115-VAC, 60-Hz, 16-watt power supply;  
IC483AE: 230-VAC, 50 Hz, 16-watt power supply;  
IC481C-R2, IC483C: Requires 16 watts from RM060 interface  
Size —  
Standalone: 2.3"H x 8"W x 11.9"D (5.8 x 20.3 x 30.2 cm)  
Rackmount Card: 7.5"W x 10.5"D (19.1 x 26.7 cm)  
Weight —  
2 lb. (0.9 kg)  
4
 
CHAPTER 2: Introduction  
2. Introduction  
The V.35RS-422 Interface Converter comes in both 115-VAC (IC483A) and 230-VAC (IC483AE)  
standalone units. A card version (IC483C) is available for rackmounting. The rack (RM060) is  
switch-selectable for either 115-VAC or 230-VAC operation.  
The V.35RS-422 Interface Converter provides bidirectional conversion of all the commonly used  
V.35 and RS-422 signals. The unit operates with one port configured as Data Terminal Equipment  
(DTE) and the other port configured as Data Communications Equipment (DCE).  
The unit has two jumper-selectable configurations. One connects RS-422 modem equipment to V.35  
terminal equipment (DCE to DTE). The other connects V.35 modem equipment to RS-422 terminal  
equipment (DTE to DCE). Both configurations allow bidirectional data transfer. Typical applications  
are shown in Figure 2-1.  
NOTE  
The Converter is configured opposite of the equipment you are connecting.  
RS-422/V.35  
RS-422  
MODEM  
(DCE)  
DTE  
DCE  
V.35  
TERMINAL  
COMPUTER  
(DTE)  
RS-422/V.35  
V.35  
DCE  
DTE  
RS-422  
TERMINAL  
COMPUTER  
(DTE)  
MODEM  
DSU  
(DCE)  
Figure 2-1. Typical Applications of the RS-422<—>V.35 Interface Converter.  
5
 
V.35 RS422 INTERFACE CONVERTER  
3. Installation  
3.1 DIP Shunt Settings  
The V.35RS-422 Interface Converter has two jumper selectable configurations determined by DIP  
shunt settings located inside the unit on the printed circuit board. One configuration is for connecting  
RS-422 DTE to V.35 DCE. The second configuration is for connecting V.35 DTE to RS-422 DCE. See  
Figure 3-1 for more information on DIP Shunt settings.  
DTE DCE  
A
B
V.35 DTE  
XW6  
STEP 1  
XW5  
XW4  
V.35 CONNECTOR  
STEP 2  
W1  
A
XW3  
XW2  
XW1  
B
C
RS-422 CONNECTOR  
STEP 4  
W2  
STEP 3  
A
B
C
If V.35 is DTE  
OR  
DTE DCE  
A
B
XW6  
STEP 1  
XW5  
XW4  
V.35 CONNECTOR  
STEP 2  
422 DTE  
FACTORY  
DEFAULT  
SETTING  
W1  
A
XW3  
XW2  
XW1  
B
C
RS-422 CONNECTOR  
STEP 4  
W2  
STEP 3  
A
B
C
If RS232 is DTE  
STEP 4 Pin H Supported (As shipped)  
W1 in BC Position (DTR passed from V.35 to RS-422 port)  
W2 in AB Position  
OR  
Pin H Not Supported  
W1 in AB position  
W2 in BC Position  
Figure 3-1. Quick Setup Guide for DIP Shunt Settings.  
6
 
CHAPTER 3: Installation  
To install the V.35RS-422 Interface Converter, follow these steps and refer to Figures 3-1 and 3-2.  
1. Set jumper XW6 to V.35 side when configuring the V.35 side of the unit as DTE. Set XW6 to the 422 side  
when configuring the RS422 side of the unit as DTE. Jumper XW6 affects only the front panel LEDs.  
2 & 3. When configuring V.35 as DTE and RS-422 as DCE, set jumpers in sockets labeled XW1B,  
XW2B, XW3B, XW4A, and XW5A.  
When configuring V.35 as DCE and RS-422 as DTE, set jumpers XW1A, XW2A, XW3A, XW4B, and XW5B.  
4. Jumper W1 is used if the V.35 side of the Converter is DCE. If W1 is in the B-C position, the DTR signal  
(pin H) is passed from the V.35 port through to pins 12 and 30 of the RS-422 port. If W1 is placed in  
the A-B position, pins 12 and 30 are forced high. When the V.35 side is configured as DTE, W1 has no  
effect and W2 is used instead. With W2 in the A-B position, the terminal ready (DTR) signal is passed  
from the RS-422 side of the V.35 port. With W2 in the B-C position, Pin H is forced high.  
5. Attach the cable from the RS-422 device to the 37-pin female receptacle (J1) on the rear panel of the  
V.35RS-422 Interface Converter.  
6. Attach the cable from the V.35 device to the 34-pin female M-block connector (J2) on the rear panel  
of the V,35RS-422 Interface Converter.  
7. Plug the 4-pin power cord into the receptacle on the rear panel of the case. Do not plug the power  
module into an AC outlet yet. After the DIP shunts are set as explained in Section 3.1, plug the  
power module into an AC outlet. The unit is now ready to use.  
Figure 3-2. Board Layout Showing LED Indicators and Plug Connectors.  
7
 
V.35 RS422 INTERFACE CONVERTER  
3.2 LEDs  
The V.35RS-422 Interface Converter is equipped with ten LED indicators located on the front panel.  
The row of type above the LEDs indicates the uses of the LEDs for a RS422 DTE/V.35 DCE  
configuration. The row of type below the LEDs indicates the uses of the LEDs for a V.35DTE/RS422  
DCE configuration. Refer to Figure 3-3. In the card version, the LED’s distinction is on the pull lever.  
Figure 3-3. Front Panel LEDs.  
8
 
CHAPTER 4: Ground Strap and Pin Connections  
4. Ground Strap and Pin Connections  
4.1 Ground Strap  
Signal grounds (Pins 19, 20, and 37 on the 422 interface and Pin B on the V.35 interface) are connected  
together, but not connected to chassis ground (Pin A). However, for applications requiring the grounds  
at a common reference point, the grounds can be connected by installing a jumper strap across W3  
located at the rear of the printed circuit board between J1 and P1.  
CHASSIS GROUND  
REQUEST TO SEND  
A
C
B
D
SIGNAL GROUND  
CLEAR TO SEND  
DATA SET READY  
DATA TERMINAL READY  
TEST MODE  
E
H
K
F
J
L
RECEIVE LINE SIGNAL DETECT  
LOCAL LOOPBACK  
TEST PATTERN  
TRANSMITTED DATA  
TRANSMITTED DATA  
P
S
R
T
RECEIVED DATA  
RECEIVED DATA  
TRANSMIT TIMING  
TRANSMIT TIMING  
TRANSMIT TIMING  
U
W
Y
V
X
RECEIVE TIMING  
RECEIVE TIMING  
TRANSMIT TIMING AA  
BB REMOTE LOOPBACK  
Figure 4-1. V.35 Interface  
1
2
3
4
5
6
7
8
9
10  
SHIELD  
RECEIVE COMMON 20  
21  
SEND DATA 22  
SEND TIMING 23  
RECEIVE DATA 24  
REQUEST TO SEND 25  
RECEIVE TIMING 26  
CLEAR TO SEND 27  
28  
DATA MODE 29  
TERMINAL READY 30  
RECEIVER READY 31  
32  
SEND DATA  
SEND TIMING  
RECEIVE DATA  
REQUEST TO SEND  
RECEIVE TIMING  
CLEAR TO SEND  
11 DATA MODE  
12 TERMINAL READY  
13 RECEIVER READY  
14  
33  
34  
15  
16  
TERMINAL TIMING 35  
36  
SEND COMMON 37  
17 TERMINAL TIMING  
18  
19 SIGNAL GROUND  
Figure 4-2. RS-422 Interface.  
9
 
V.35 RS422 INTERFACE CONVERTER  
4.2 Pin Connections  
Figures 4-1 and 4-2 show the pin connections for the V.35RS-422 Interface Converter. The illuminated  
LEDs in these figures indicate incoming signals only.  
The unit is shipped without the jumper (Rx) between signal ground and chassis ground. The RS-422  
port is configured DTE and the V.35 port is configured DCE.  
1
For operation with the RS422 port as DCE and the V.35 port as DTE, the signal directions are reversed .  
Pins 12 and 30 of the RS422 port become inputs which are connected to a status LED.  
1
In this configuration, W1 has no effect on the circuit W2 is used instead.  
W2  
A
Pin 30  
B
Pin H  
Pin 12  
C
The unit is shipped with the TERMINAL READY jumper in the TRUE (ON) position.  
AB - DTR passed through  
BC - DTR always asserted  
10  
 
CHAPTER 4: Ground Strap and Pin Connections  
4
22  
P
S
4
22  
P
S
DS6  
DS5  
TD  
RD  
R
T
6
24  
DS5  
DS6  
TD  
RD  
6
R
T
24  
7
25  
C
D
7
25  
C
D
E
DS1  
DS3  
RTS  
CTS  
9
27  
DS3  
DS1  
RTS  
CTS  
9
27  
11  
29  
E
F
11  
29  
DS2  
DS4  
DSR  
SD  
13  
31  
DS9  
DS4  
DTR/DM  
F
13  
31  
5
23  
Y
AA  
RR  
Y
5
23  
DS8  
TC  
RC  
AA  
8
26  
V
X
DS8  
DS7  
TC  
RC  
8
26  
V
X
DS7  
A
12  
30  
B
W2  
H
17  
35  
C
U
W
C
C
A
H
12  
30  
B
DS9  
DM/DTR  
W1  
17  
35  
U
W
CTS  
DS1  
RTS  
RR  
DS4  
TD  
RD  
RC  
TC  
DM  
DS2 DS3  
DS10  
POWER  
DS5  
DS6  
DS7  
DS8  
DS9  
DS1  
RTS  
DS2 DS3  
DSR CTS  
DS4  
DS10  
DS5  
DS6  
TD  
DS7  
RC  
DS8  
TC  
DS9  
DTR  
SD POWER RD  
Figure 4-1. The Converter Configured  
for RS-422 as DTE and V.35 as DCE.  
Figure 4-2. The Converter Configured for  
RS-422 as DCE and V.35 as DTE.  
11  
 
© Copyright 1995. Black Box Corporation. All rights reserved.  
1000 Park Drive Lawrence, PA 15055-1018 724-746-5500  
Fax 724-746-0746  
 

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