PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
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
Electronics Co.
Patton
WARRANTY NOTICE
WARRANTIES: Patton Electronics Co. (hereafter referred to as Patton) warrants that its equipment is free from any
defects in materials and workmanship. The warranty period shall be two years from the date of shipment of
equipment. Patton’s sole obligation under its warranty is limited to the repair or replacement of the defective
equipment, provided it is returned to Patton, transportation prepaid, within a reasonable period. This warranty will not
extend to equipment subjected to accident, misuse, alterations or repair not made by Patton or authorized by Patton in
writing.
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 Patton assumes no liability for losses incurred as a result of out-of-date or incorrect information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 MSDs 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
MSDs 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 MSDs 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).
CE NOTICE
The CE symbol on your Patton Electronics equipment indicates that it is in compliance with the electromagnetic
Compatibility (EMC) directive and the Low Voltage Directive (LVD) of the European Union (EU). A Certificate of
Compliance is available by contacting Technical Support.
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 Support at:
tel: (301) 975-1007;
email: support@patton.com;
or, www: http://www.patton.com.
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 Support hours: 8AM to 5PM EST, Monday through Friday.
Warning: Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of FCC rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expence.
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.
VDE Emissionen
Anhang 2 zur Anlage 1 zur AmtsblVfg 243/1991
Bescheinigung des Herstellers / Importeurs
Hiermit wird bescheinigt, daß der/die/das
8 Port Digital Sharing Device, 3080/V24 (CTS DSD-8), 124000
(Gerät, Typ, Bezeichnung)
in Übereinstimmung mit den Bestimmungen der BMPT-AmtsblVfg 243/1991 funkentstört ist.
Der vorschriftsmäßige Betrieb mancher Geräte (z.B. Meßsender) kann allerdings gewissen
Einschränkungen unterliegen. Beachten Sie deshalb die Hinweise in der
Bedienungsanleitung.
Dem Zentralamt für Zulassungen im Fernmeldewesen wurde das Inverkehrbringen dieses
Gerätes angezeigt und die Berechtigung zur Überprüfung der Serie auf die Einhaltung der
Bestimmungen eingeräumt.
Patton Electronics Co.
7622 Rickenbacker Drive
Gaithersburg, Maryland, USA 20879
(Name und Anschrift des Herstellers / Importeurs)
ii
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
CHAPTER 1 - OPERATION
The Patton 3080/V24 (CTS DSD-8) is a network enhancement accessory intended for high
speed synchronous or asynchronous Modem, or port sharing applications. The 3080/V24
(CTS DSD-8) allows for immediate expansion of a system without the requirement of
additional communication lines. The 3080/V24 (CTS DSD-8) allows any combination of up to
eight DCE or DTE devices to share a single DCE or DTE high speed link in a point-to-point or
multi-point polled network.
Channel Clocking
The Patton 3080/V24 (CTS DSD-8) is protocol transparent and operates in synchronous and
asynchronous environments at data rates up to 76,800bps, depending on cable length and
attached equipment. Clocking can be derived from the Master Port clock, (pins 15 or 24 for
TXC and 17 for RXC), the internal clock generator or any Sub-Channel 1 through 6 (pins 15 or
24 for TXC and 17 for RXC).
Fallback Clocking
In the event of loss of an externally provided clock or optionally Sub-Channel 1 DCD becoming
inactive, the 3080/V24 (CTS DSD-8) has the ability to automatically fall back to the
predetermined internal baud rate clock or the Sub-Channel 6 RX Clock (pin 17).
Channel Interface
The 3080/V24 (CTS DSD-8) has nine DB-25 female connectors located on the rear of the unit.
Each connector is pinned with EIA RS-232, using RS-423 electrical characteristics. This
enables extended cable driving distances, which often bypasses the need for line drivers.
Each port is DCE/DTE selectable, which eliminates the need for a crossover cable. DSR or
DTR can additionally be forced to the active state individually on each Sub-Channel by Jumper
control.
3080/V24
SUB-CHANNEL STATUS
ACTIVE
ANTI-STREAM
Pwr SD RD
FBC
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
1-1
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OPERATION
Page 6
124001UA
Anti-streaming
PATTON ELECTRONICS CO.
3080/V24
INSTALLATION AND OPERATIONS MANUAL
A typical problem often encountered is a
“STREAMING”
remote terminal. The streaming
problem can tie up an entire circuit until the offending device has recovered or is powered
down. A streaming condition occurs when a Sub-Channel remains active, disrupting the
polling sequence. The 3080/V24 (CTS DSD-8) provides two user selectable modes of
controlling a streaming condition, an automatic anti-streaming Abort Timer with eight
selectable block lengths and a setting to disable anti-streaming for large data block transfers,
and a manual Operator Control mode (front panel push button switch).
Automatic Anti-streaming
- Automatic Anti-streaming will block the asserted control signal
from the Sub-Channel Port, releasing the 3080/V24 (CTS DSD-8) to accept requests from any
other Sub-Channel that has not been locked out due to a streaming condition. When a SubChannel is locked out for streaming, a visual indication, by Sub-Channel, is provided on the
front panel.
will still be broadcast to locked out Sub-Channels
Any data sent to the Master Port by the streaming device will be lost, but data
. Once a Sub-Channel is locked out due to
streaming, the Sub-Channel will remain locked out until the attached device removes the
streaming condition. When configured for “Switch on RTS” Mode, if RTS is held active, RTS
must become inactive. When configured for “Switch on Data” Mode, if continuous data
transitions have triggered the Anti-Stream logic, the transitions must stop before the DSD-8
will clear the Anti-Stream logic to that Sub-Channel. Removing the Sub-Channel via the front
panel disable switch will not clear the Anti-stream logic for a Sub-Channel once it has been
activated.
Manual Anti-Stream
- If manual Anti-Stream protection is chosen, a streaming condition
caused by one of the attached terminals can be quickly corrected by the 3080/V24 (CTS
DSD-8) via the associated front panel locking switches. A switch is provided for each SubChannel and permits the rapid removal of a streaming terminal without having to disconnect
any cables or power down the offending terminal. Terminals may be selectively removed for
self-test and maintenance without affecting the remaining Sub-Channels. Once the streaming
condition has been corrected, the front panel switch is simply depressed to the locked
(Enable) position (Green indicator ON) to re-establish normal operation. Removing a SubChannel with the front panel switch will block data from the Sub-Channel going to the Master
Port but will not block data going from the Master Port to the Sub-Channel.
Channel Selection Modes
The 3080/V24 (CTS DSD-8) provides two selectable Sub-Channel service modes of
operation, the Scanning Mode and Priority Mode. Depending on system requirements, either
mode may be selected by internal DIP switch settings. Both modes switch on activity from the
Sub-Channel.
OPERATION
1-2
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
In the Scanning Mode the 3080/V24 (CTS DSD-8) scans each Sub-Channel, in sequence,
beginning with Sub-Channel 1. This rotational sequence is repeated continually with each
attached Sub-Channel having equal access to the communications link. When data or control
lines from a Sub-Channel become active that Sub-Channel is switched through to the master
port by the 3080/V24 (CTS DSD-8). All remaining Sub-Channels are locked out until the first
device becomes inactive. When the Sub-Channel device becomes inactive, the 3080/V24
(CTS DSD-8) will resume scanning the Sub-Channels for another active signal.
When configured for Priority Mode operation, the 3080/V24 (CTS DSD-8) monitors all SubChannels simultaneously with Sub-Channel 1 having the highest priority. When a Sub-Channel
becomes inactive, the 3080/V24 (CTS DSD-8) will automatically default to the highest priority
(lowest number) Sub-Channel with activity.
Contention for the Master port is accomplished by asserting RTS (Request to Send) if the
Sub-Port is configured as a DCE, DCD (Data Carrier Detect) if the Sub-Port is configured as
a DTE or Data Transitions from the attached Sub-Channel devices in either configuration. The
active interface lead RTS or DCD can be selected on an individual basis for each Subchannel, selection of contention mode,
“Data Transitions”
or
“Interface Lead”
activation is
selected in Sub-channel groups. Sub-channels 1 thru 4 are the first group and Sub-channels 5
thru 8 are the second group. All Sub-channels in a group will be set to the same contention
mode, either
“Data Transitions”
or
“Interface Lead”
activation. Once a Sub-Channel asserts
an active control signal, that control signal will be passed through to the Master Port,
depending on DTE / DCE configuration of the Sub-Channel and Master Port. This control will
be passed without delays. If the Master Port is configured as a DTE the signal will be passed
as RTS. The CTS returned to the Master will have an optional delay added before the signal is
returned to the Sub-Channel port.
Port Enable / Disable, front panel switches must be pushed in (GREEN indication) for a SubChannel to access the Master Port regardless of the mode of operation selected.
Channel Tail Circuits
A buffer is built into the unit for tail circuit (DCE to DCE) applications. An 8 bit centered ring
buffer is used to correct the clock phasing errors generated between the Modem on the
Master Port and the Sub-Channel port for the data transferred from the Sub-Channel to the
Master Port. If the unit is operated in an asynchronous environment the buffer must be
bypassed. This is accomplished by moving the SYNC/ASYNC switch to ASYNC.
1-3
OPERATION
Page 8
INSTALLATION AND OPERATIONS MANUAL
124001UA
PATTON ELECTRONICS CO.
3080/V24
Interface Connections
All connections are made via industry standard EIA RS-232 DB-25 female connectors located
on the rear of the unit. The following interface leads are implemented, Chassis (1), TXD (2),
RXD (3), RTS (4), CTS (5), DSR (6), Sig Gnd (7), DCD (8), Plus Unreg (9), Minus Unreg (10),
TXC (15), RXC (17), DTR (20), XTXC (24). Pins 9 & 10 can be disabled by Jumpers on the
PCB.
Front Panel LEDs
Front panel LEDs are provided to indicate power is applied, RXD and TXD activity from the
Master Port, Sub-Channel activity of each individual Port, Anti-Stream condition of each SubChannel and an indication of clock fallback condition.
Channel Enable / Disable Switches
Front panel switches allow operator intervention to remove an individual Sub-Channel from
accessing the Master Port. Positive latching type switches are provided for each SubChannel port for isolating or removing a streaming terminal. The Sub-Channel is activated by
pushing the switch until it is in the “IN” position. The switch will indicate GREEN in color. To
disable a Sub-Channel push the switch until it locks in the “OUT” position, the switch will
indicate BLACK in color. Disabling a Sub-Channel with the front panel does not prevent the
Sub-Channel from receiving data from the Master Port only from sending data to the Master
Port.
Power Supply
A linear power supply is located internally, an external 110/220VA switch is located on the rear
of the unit. If chassis ground and signal ground need to be tied together this can also be
accomplished by switch selection. The unit is Rackmountable for 19" (or optional 23")
cabinets, by using the included Rackmount Kit. Safety approvals granted are UL, CSA and
TÜV. Emission approvals for FCC Class A and VFG243 have also been granted.
OPERATION
1-4
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
Caution, Disconnect the PO WER Before Removing The Cover
Vorsicht, Befor Deckung Abnehmen Mach Strom Zu.
CHAPTER 2 - SETUP AND INSTALLATION
Power Connection
Before connecting the 3080/V24 (CTS DSD-8) to a AC power source the top cover must be
installed and secured with the supplied #8-32 screws. The unit is supplied with a 110/220VA
voltage switch, turn the switch with a coin or screw driver to the appropriate voltage for your
country. If the unit is set to 110V insure that
the fuses are 0.16A Slow Blow (Little Fuse
218.160). For 220V operation use 0.08A
(Little Fuse 218.080) Slow Blow fuses.
EXAMPLE: United States of America; set
to 110VA. The unit is supplied with a IEC
power connector next to the voltage select
switch, plug the power cord into the
connector until it is firmly seated. You
may now connect the power cord into
your AC outlet.
IEC Power Connector
110 / 220VA Switch
Fuse Drawer
110
MASTER DTE/ DCE
220
Factory Configuration Switch Settings
The 3080/V24 (CTS DSD-8) is configured prior to shipment with the switches set to the
following default positions:
Switch 27 - 6 OFF, 1,2,3,4 and 5 ON.
TX Clock Source = Master, pin 15
Chassis Ground not connected to Signal Ground
Switch 28 - 4 and 5 OFF, 1,2,3 and 6 ON.
Switch 29 - 1, 2 and 4 to OFF, 3,5 and 6 ON.
No Data Time Out = 2048 bits
Anti-Stream = Enabled
Broadcast Data to Sub-Channels
Sub-Channel Activity Indicated by Interface Control (RTS/DCD)
2-1
SETUP & INSTALLATION
Page 10
INSTALLATION AND OPERATIONS MANUAL
124001UA
PATTON ELECTRONICS CO.
3080/V24
Switch 30 - 1 and 2 OFF, 3, 4, 5 and 6 ON
Internal Baud Rate = 9600, Normal
Fallback Clock Source = Data Transitions
Fallback Clock = Disabled
Switch 31 - 2 and 3 to OFF, 1,4,5 and 6 to ON
Sync Mode
Contention Mode = Scan
CTS Delay = 1 mS
If the system application requires one or more of the default settings to be changed, it will be
necessary to remove the top cover of the enclosure to access and change the DIP switches
located on the printed circuit board.
Disassembly
Remove the top cover by removing the phillips head screws located on the left and right sides
of the 3080/V24 (CTS DSD-8). DTE/DCE switches SW9 through SW26, interface Jumpers
J4 through J14 and configuration switches SW27 through SW31 are located on the PCB as
indicated on the strapping guide in the Appendix of this manual. After the switch selection
activity is completed,
re-install the top cover BEFORE connecting to a AC power source
Installation
Select an appropriate location accessible to and within six feet of an AC power outlet, the
outlet must have a ground pin receptacle for product warranty. The DCE-to-DTE cabling
between each attached device and the 3080/V24 (CTS DSD-8) should be “Straight Through”,
shielded and terminated with male connectors. Sub-Channels are marked PORT 1 through
PORT 8, the Master Port is marked, MASTER DCE/DTE. If any terminal has a priority service
mode, ensure it is connected to the port connector designated “PORT 1” on the rear panel of
the 3080/V24 (CTS DSD-8). Secure other terminals or Modems to be serviced to the
remaining “PORT” connectors. Connect the MODEM or TERMINAL to the connector
designated “MASTER DTE/DCE”.
Equipment Grounding (SW27-6)
(default OFF)
.
Switch SW27-6 provides for grounding interconnection in those systems requiring a
connection between (Frame Ground) and (Signal Ground). Connect ONLY if required.
SETUP & INSTALLATION
2-2
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
CTS Delay (SW31-3,4,5)
If a CTS delay is desired, set SW31-3, 4 and 5 to the required value as indicated below.
SW31-3SW31-4SW31-5Time
ONONONNo Delay
OFFONON1mS
ONOFFON2mS
OFFOFFON4mS
ONONOFF9mS
OFFONOFF18mS
ONOFFOFF36mS
OFFOFFOFF72mS
124001UA
Anti-Streaming (SW28-4,5,6 and SW29-3)
The maximum data block size is user selectable via switch SW28- 4, 5 and 6. As shown
below eight block sizes are provided to the user. To disable anti-streaming set SW29-3 to the
OFF position. The maximum block size is normally defined at the time of installation.
SW28-4SW28-5SW28-6CLOCKS
ONONON1024
OFFONON2048
ONOFFON4096
OFFOFFON16 K
ONONOFF64 K
OFFONOFF256 K
ONOFFOFF1 MEG
OFFOFFOFF2 MEG
Receive Data Mode (SW29-4)
(default OFF)
Setting switch SW29-4 to ON sets the DSD-8 into the Gated Mode. Only the Sub-Channel that
is currently active will receive the data from the master port. Setting position 4 to OFF enables
the Broadcast mode. Receive Data from the Master Port is sent to all Sub-Channels.
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SETUP & INSTALLATION
Page 12
INSTALLATION AND OPERATIONS MANUAL
124001UA
PATTON ELECTRONICS CO.
3080/V24
Control Turn-Off Delay in “DATA” Switching Mode (SW29-1,2)
When configured to switch on DATA, switch SW29-1 and 2 set the Sub-Channel release time
in clocks. The value selected is the number of clocks at the current baud rate that must occur
without any data transitions on the Sub-Channel to indicate that Sub-Channel has completed
its transmission and the 3080/V24 (CTS DSD-8) can resume servicing the other SubChannels. The following table should be used to set this time period.
SW29-1SW29-2CLOCKS
ONON16
ONOFF64
OFFON256
OFFOFF2048
Switch on Data / Control (SW29-5,6)
(default 5-ON, 6-ON)
Sub-channels are selectable for switch on DATA or switch on an active interface control lead
in groups of 4 Sub-Channels. Set SW29 pos 5 to OFF if you want Sub-channels 1 thru 4 set to
switch on
"Data Transitions"
. Set pos 5 to ON if you want them to be set to switch on
"Interface Lead". SW29 pos 6 is associated with sub-channels 5 thru 8.
Internal Baud Rates (SW30-1,2,3,4)
Switch SW30-1, 2, 3 and 4 select the master clock rate when Internal Clock Source is selected
on TX Clock Source or RX Clock Source. In addition the fallback clock rate is also selected
with this option. When fallback clocking is required, the RX Clock Source and TX Clock
Source should NOT be set to INTERNAL. Selecting CHAN 6 RXC allows fallback clocks to
originate from Sub-Channel 6 pin 17. The following table shows the available rates. If CHAN
6 RXC is selected, SW30-4 can be in either position.
SW30-1SW30-2SW30-3Pos 4=ONPos 4=OFF
ONONON76,80057,600
OFFONON38,40028,800
ONOFFON19,20014,400
OFFOFFON9,6007,200
ONONOFF4,8003,600
OFFONOFF2,4001,800
ONOFFOFF1,200900
OFFOFFOFFCHAN 6 RXC
SETUP & INSTALLATION
2-4
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
Fallback Clock Enable (SW-30-6)
(default ON)
If Clock Fallback is required when the primary clock fails, set switch SW30-6 to OFF. If
Fallback is not required set SW30-6 to ON. The Fallback clock rate is selected with the
internal baud rate option. When enabled, the Front Panel FBC LED will light if clock Fallback
occurs.
Fallback Clocking From Sub-Channel 6 (SW30-1,2,3)
To use the Sub-Channel 6 RX Clock as the fallback clock set SW30-1, 2 and 3 to OFF. Any
other position will select some internal clock rate as called out in the Internal Baud Rates
section.
Fallback Mode Selection (SW30-5)
Only Sub-channel 6 can be used as the fallback clock
(default ON)
.
If Fallback is required, two modes are available via switch SW30-5. To fallback when the
transitions from the primary clock source stop, set SW30-5 to ON. To fallback when DCD on
Sub-Channel 1 becomes inactive, set SW30-5 to OFF.
NOTE: Both TX and RX Clock Source Select MUST Be Set !!!!
TX Clock Source Selection (SW27--1,2,3)
TX Clock Source is selected by switch SW27-1, 2 and 3. The following table indicates the
source options provided by the 3080/V24 (CTS DSD-8).
SW27-1SW27-2SW27-3Source
ONONONMaster
OFFONONPort 1
ONOFFONPort 2
OFFOFFONPort 3
ONONOFFPort 4
OFFONOFFPort 5
ONOFFOFFPort 6
OFFOFFOFFInternal
TX Clock Pin Selection (SW27-4)
(default ON)
The primary transmit clock can be derived from either pin 15 or 24. If pin 15 is to be the
source for primary TX Clock, set SW27-4 to ON. If pin 24 is to be the source for primary TX
and RX Clock, set SW27-4 to OFF.
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SETUP & INSTALLATION
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INSTALLATION AND OPERATIONS MANUAL
124001UA
PATTON ELECTRONICS CO.
3080/V24
RX Clock Source Selection (SW28-1,2,3)
RX Clock Source is selected by SW28-1, 2 and 3. The following table indicates the source
options provided by the 3080/V24 (CTS DSD-8). NOTE: If TXC Source is pin 24 That clock
will be used as the RXC also.
SW28-1SW28-2SW28-3Source
ONONONMaster
OFFONONPort 1
ONOFFONPort 2
OFFOFFONPort 3
ONONOFFPort 4
OFFONOFFPort 5
ONOFFOFFPort 6
OFFOFFOFFInternal
Tail Circuit Buffer (SW31-1)
(default ON)
The 3080/V24 (CTS DSD-8) has a Tail Circuit Buffer that is automatically selected when a
Sub-Channel is set as a DTE. The buffer will provide clock synchronization of the data from
the Sub-Channel to the Master Port for Tail Circuit operations. The buffer is de-activated when
the Sub-Channel is configured as a DCE. When operating in an asynchronous environment
the Buffer must be bypassed. To bypass the buffer in a synchronous or asynchronous
application, set switch SW31-1 to OFF (ASYNC). For normal operation in a synchronous
environment set SW31-1 to ON (SYNC). When using a tail circuit modem with the 3080/V24
(CTS DSD-8), the modem connected to the Sub-Channel, should be set to External Transmit
Clocking. The modem at the remote end of the connection should be set to RX-TX Clocking
or Slaved TX Clock. This will insure the same clock is present throughout the network and
clock slippage will not occur.
SETUP & INSTALLATION
2-6
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
Port DCE/DTE Selection (SW9 thru SW26)
Slide switches SW9 through SW26 are used to configure DTE/DCE for each port. Slide Both
switches associated with a port to the same position.
Example:
If connecting a modem (DCE
Device) to the PORT, then the port should be configured as a DTE interface. Slide both
switches to the DTE position toward the interface connector. If connecting a terminal (DTE) to
the Sub-Channel, the port should be configured as a DCE. Slide both switched to the DCE
position away from the interface connector.
interface that is to be connected to it
. When a port is selected as a DCE, pin 9 and 10 test
The port is always configured opposite to the
voltages are provided to the interface connector if JP4 and JP5 are installed. If the port is
configured as a DTE, pins 9 and 10 are open. JP4 and JP5 control Plus Unreg and Minus
Unreg to all Sub-Channels, therefore it is not possible to have test power on one DCE without
having it on all DCE Sub-Channels.
Test Voltage Enable Pins 9 & 10 (JP4 & JP5)
Pin 9 and Pin 10 unregulated power is provided on each DB-25 connector configured as a
DCE if JP4 and JP5 are installed. Pin 9 and 10 unregulated power is not provided to any
connector configured as a DTE regardless of JP4 and JP5 installation.
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SETUP & INSTALLATION
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INSTALLATION AND OPERATIONS MANUAL
124001UA
PATTON ELECTRONICS CO.
3080/V24
DTR / DSR Forced Active (JP6 thru JP14)
DTR is tied to DSR on each of the Sub-Channel ports. If the device connected does not
supply a DTR but requires DSR (DTE) or does not supply DSR but requires DTR (DCE),
installing the forced DTR/DSR jumper (JP6-JP14) for the appropriate Sub-Channel will solve
this problem. The line is forced to +6V via an 100Ω resistor, providing isolation to any driver
that might be on the interface.
ChannelJumperChannelJumper
MasterJP65JP11
1JP76JP12
2JP87JP13
3JP98JP14
4JP10
FACTORY Test Jumpers (JP1, JP2 and JP3)
The three factory test jumpers JP1, 2 and 3, must be installed for the unit to properly function.
These jumpers are used in the manufacture and test of the product prior to shipment.
SETUP & INSTALLATION
2-8
Page 17
APPENDIX
g
g
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PATTON ELECTRONICS CO.INSTALLATION AND OPERATIONS MANUAL
3080/V24
124001UA
Leased
or
Dial Line
RXC-17
RS-423 MODEM
Host
Data
TXC-15
Internal
TX Clocking
Data
Modem
3080/V24
3080/V24
Modem
Slave
TX Clocking
RS-423
Dial Line
RS-423 MODEM
Typical Application
Data
RXC-17
XTXC-24
TXC-15
Data
Buffer
3080/V24
Leased
or
RS-423
Modem
TX Clocking
Data
RXC-17
Data
RS-423 MODEM
RS-423
External
XTXC-24
Leased
or
Dial Line
RS-423RS-423
RS-423
Modem
Slave
TX Clocking
XTXC-24
RXC-17TXC-15
Termi nal
Data
Typical Tail Circuit Configuration
DB-2 5 RS-232
Transmit Clo ck (f rom DCE)
Receive Clo ck ( from DCE)
Data Terminal Ready (from DTE)
External Transmit Clock (from DTE)
Interface Pins Supported
14
15
16
17
18
19
20
21
22
23
24
25
A-1
Shield ( common)
1
Transmit Data (from DTE)
2
3
Rece ive Data (from DCE)
4
Request to Send (from DTE)
Clear To Send (from DCE)
5
6
Data Set Ready (from DCE)
7
Si
nal Ground (common)
8
Data Carrier Detect (from DCE)
9
10
+ Volta
- Volta
e
e
11
12
13
APPENDIX
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INSTALLATION AND OPERATIONS MANUALPATTON ELECTRONICS CO.