Raven RFMOW V2 User manual

Raven Electronics Corporation
Raven 41800-002
RFMOW V2
Users Manual
© 2008 Raven Electronics Corporation. All rights reserved. Rev. 02

Table of Contents
CHAPTER 1 INTRODUCTION.................................................................................................1
General Information............................................................................................. 1
Safety Warning.................................................................................................... 1
Raven Electronics’ Warranty ............................................................................... 1
System Description.............................................................................................. 2
CHAPTER 2 INSTALLING and SETTING UP THE UNIT ...................................................... 3
Unpacking the Equipment ................................................................................... 3
Initial Installation and Setup................................................................................. 3
Power Distribution and Grounding....................................................................... 3
Setup and Preparation for Use............................................................................ 4
Install the Unit into the Equipment Rack.............................................................. 4
Install the KIV-7M ................................................................................................ 5
Install the KIV-7HSB............................................................................................ 5
Equipment Setup................................................................................................. 6
NT Configuration.................................................................................................. 7
CHAPTER 3 OPERATION .......................................................................................................9
Introduction.......................................................................................................... 9
Controls & Indicators ........................................................................................... 9
Equipment Power Up........................................................................................... 9
Equipment Power Down...................................................................................... 9
Equipment Theory of Operation ........................................................................ 10
CHAPTER 4 TROUBLESHOOTING...................................................................................... 11
CHAPTER 5 SPECIFICATIONS............................................................................................. 13
APPENDIX A DIAGRAMS.......................................................................................................15
Front Panel Diagram.......................................................................................... 16
Rear Panel Diagram.......................................................................................... 17
APPENDIX B CONNECTORS (Pin Outs)............................................................................... 18
APPENDIX C GLOSSARY.......................................................................................................28
APPENDIX D GENERAL CONDITIONS OF SALES .............................................................. 30
i

CHAPTER 1 INTRODUCTION
GENERAL INFORMATION
Thank you for purchasing the 41800-002 RFMOW V2 from Raven Electronics Corporation. Please contact
us if you have any questions, concerns, product ideas, or ideas to improve this manual. We can be
contacted at:
Raven Electronics Corporation
400 Edison Way
Reno, Nevada 89502
[phone] Phone
[phone] Fax
[email protected]
[email protected]
www.ravencomm.com
!
Please be Electro-Static Discharge (ESD) protected before
starting any procedures contained in this manual.
RAVEN ELECTRONICS’ WARRANTY
This warranty expressly precludes any liability by Raven for consequential damages however arising after
delivery to the purchaser of the affected equipment, and is limited to the expressed warranty, excluding all
implied warranties including merchantability. All equipment manufactured by Raven is warranted against
defective materials and workmanship for a period of two (2) years from the date of delivery to the original
purchaser or end-user. Liability under this warranty is limited to servicing, adjusting, repairing or replacing,
as necessary, any equipment returned to the factory, transportation prepaid for that purpose. Factory
examination must disclose a manufacturing defect. Repaired or replaced items will be returned to the
purchaser surface freight prepaid within the continental U.S.A.
This warranty does not extend to any equipment which has been subjected to transportation damage,
misuse, neglect, accident, improper installation, or any other circumstances reasonably beyond the control of
Raven. Beyond the warranty period, repairs will be billed to the purchaser at cost. In such cases, an
estimate will be submitted for approval before repair is initiated. Repaired equipment will be returned to the
purchaser with transportation charges collect, unless agreed to between the purchaser and Raven.
1

CHAPTER 1 INTRODUCTION
SYSTEM DESCRIPTION
The 41800-002 RFMOW V2 is a standard 19” rack-mountable unit which provides a common point for
connecting various hardware elements, signaling protocol converters, Secure Voice Unit, satellite modem,
and housing for a COMSEC device. The Unit contains signal switching and level conversion printed circuit
boards, and power supply. The Unit will support the Network Terminal (NT) configuration.
Front panel indicator lights display the operational status of each internal modular component, current data
path that interfaces with J2 (the modem data connection), control path that interfaces with the modem and/or
other equipments, and the power supply.
NOTE: The KIV-7 is not included within the Unit. The COMSEC device must be manually installed by the
user prior to system operation.
The Unit operates on standard AC power sources of 90 to 264 VAC, 47 to 63 Hz. The Unit provides 12 VDC
power to a rear panel connector (J7) and power for the COMSEC device contained within the Unit.
2

CHAPTER 2 INSTALLING and SETTING UP THE UNIT
UNPACKING THE EQUIPMENT
Upon receiving the RFMOW V2, remove it from the shipping container. Remove all packing materials from
inside the RFMOW V2 KIV Carrier. Be sure to retain loose cables and the 41875 KIV adapter board that are
in the Carrier. Inspect for any obvious signs of external damage due to shipping. Retain the original
shipping containers in case the unit needs to be returned to the depot for repair.
INITIAL INSTALLATION AND SETUP
The following sections provide information required for installing, setup, and preparing the Replacement
Frequency Modulated Orderwire (RFMOW V2) Model 41800-002 for use. The information includes:
•Power distribution and grounding
•Setup and preparation for use
The RFMOW V2 is designed to be rack-mounted in a standard depth, 19-inch wide equipment rack.
POWER DISTRIBUTION AND GROUNDING
The following subparagraphs describe the power distribution and grounding of the RFMOW V2.
WARNING
Proper grounding is an important safety feature, and must be a primary
consideration in all electrical and electronic equipment installations. Ensure
that all grounding connections are secure and that all grounding cables are kept
out of vehicle and personnel paths.
WARNING
Use extreme care when working around electrical equipment to avoid the
possibility of severe or fatal electrical shock. Remove all jewelry (i.e. rings,
necklaces, etc.) before working with the RFMOW.
WARNING
Ensure that all power connection is properly insulated, clean, and mechanically
secure to prevent personnel injury when the RFMOW V2 is powered up and
operated. When the RFMOW V2 power cable is installed, carefully inspect all
connectors and wiring for worn or broken parts. Make any necessary repairs
3

CHAPTER 2 INSTALLING and SETTING UP THE UNIT
before powering up the Unit. If any cable or connector damage is discovered
while the Unit is operating, the Unit should be powered down and the damage
repaired immediately.
The Unit accepts 90-264 VAC, 47-63 Hz AC power via the AC Power Connector (located on rear panel of the
RFMOW V2 chassis). The panel connector is an IEC-320-C14 type. Use a right angle type plug and secure
it with the Velcro cord retainer.
Grounding to the user equipment rack shall consist of a grounding cable attached to the RFMOW V2
grounding stud on the rear panel of the chassis.
SETUP AND PREPARATION FOR USE
Install the RFMOW V2 by performing the steps:
Tools Needed:
•3/8” Nut Driver
•1/8” Flat-Tip Screwdriver
•#2 Phillips Screwdriver
Install the Unit into the equipment rack. Refer to page 18 for rear panel connector locations.
1. Attach the Grounding Cable to the Grounding Stud on the rear panel (Item 19) and
tighten with a 3/8” nut driver.
2. Plug the power cord into the AC Power Input Connector on the rear panel (Item 18).
Secure the power cord with the Velcro cord retainer.
3. Attach the Modem Control Cable to J5 on the rear panel and tighten with a 1/8” Flat-Tip
screwdriver.
4. Attach the Modem Data Cable to J2 on the rear panel and tighten with a 1/8” Flat-Tip
screwdriver.
5. Attach the Secure Voice Unit Cable to J1 on the rear panel and tighten with a 1/8” Flat-
Tip screwdriver.
6. Attach the Modem Output cables (not supplied) to the TX IN and TX OUT BNC
connectors. This places the internal RF Attenuator in the Modem RF Output path.
7. Plug the Ethernet Cable (not supplied) into the Ethernet Port on the rear panel (Item 1)
(if used).
8. Plug the USB Cable (not supplied) into the USB Port on the rear panel (item 2)(if used).
9. Place the RFMOW V2 in to the equipment rack.
10. Place rack screws in the four mounting holes and tighten to the rack using a #2 Phillips
screwdriver (or other appropriate tool if not using Phillips head screws).
4

CHAPTER 2 INSTALLING and SETTING UP THE UNIT
Install the KIV-7M into the RFMOW V2 carrier assembly (see page 17 for KIV Carrier location).
1. Loosen the four thumb screws on the front panel of the Unit. Slide the KIV Carrier out of
the chassis until it stops. Press the finger releases on each slide of the carrier and pull
the carrier the rest of the way out of the chassis.
2. Loosen two thumbscrews on the rear of the carrier and remove the KIV Carrier lid.
3. If not already in position, attach the KIV keeper near the printed circuit board with the
tabs pointing toward the rear of the carrier. Use a #2 Phillips screwdriver.
4. Attach the Raven R207-0002 cable to the KIV-7M power connector. Tighten the
jackscrews by hand.
5. Attach the Red and Black signal cables to the appropriate connectors on the rear of the
KIV-7M. Tighten the jackscrews by hand.
6. Confirm that all four cables attached above are plugged into the appropriate places on
the printed circuit board. Store the KIV-7HSB power cable and adapter board in a
secure place.
7. Place the lid back on the carrier and tighten the thumbscrews on the rear of the carrier
by hand.
8. Insert the carrier into the chassis until it stops. Press the finger releases on the slides
and slide the carrier all the way into the chassis. Tighten four thumbscrews on the front
panel of the Unit.
Install the KIV-7HSB into the RFMOW V2 carrier assembly (see page 17 for KIV Carrier location).
1. Loosen the four thumb screws on the front panel of the Unit. Slide the KIV Carrier out of
the chassis until it stops. Press the finger releases on each slide of the carrier and pull
the carrier the rest of the way out of the chassis.
2. Loosen two thumbscrews on the rear of the carrier and remove the KIV Carrier lid.
3. If not already in position, attach the KIV keeper away from the printed circuit board with
the tabs pointing toward the front of the carrier. Use a #2 Phillips screwdriver.
4. Attach the Raven R209-0007 cable to the KIV-7HSB power connector. Tighten the
jackscrews by hand.
5. Attach the Raven 41875 Adapter Board to the rear of the KIV-7HSB. Tighten the
thumbscrews by hand.
6. Attach the Red and Black signal cables to the appropriate connectors on the 41875
Adapter Board. Tighten the jackscrews by hand.
7. Confirm that all three cables attached above are plugged into the appropriate places on
the printed circuit board. Store the KIV-7M power cable and KIV-7M HCI port Ethernet
cable in a secure place.
8. Place the lid back on the carrier and tighten the thumbscrews on the rear of the carrier
by hand.
9. Insert the carrier into the chassis until it stops. Press the finger releases on the slides
and slide the carrier all the way into the chassis. Tighten four thumbscrews on the front
panel of the Unit.
5

CHAPTER 2 INSTALLING and SETTING UP THE UNIT
EQUIPMENT SETUP
The RFMOW V2 enclosure contains the necessary hardware to interface the ports of a Monitor, Keyboard,
Mouse, Secure Voice Unit, KIV carrier, and satellite modem. All interface connections to external equipment
are mounted on the rear panel. See the rear panel diagram on page 18 for the location of the connectors
mentioned below.
Warning: This device has High Voltage. Make sure to disconnect the power cord before servicing the unit.
Failure to do so may result in physical injury due to electrical shock.
J1 – Secure Voice Interface
•The Unit supports full duplex RS-232 specification signals for transmit and receive data on J1. In
addition, transmit and receive clocks are provided from the network clock frequency divided by 1, 2, 4 or
8 (the division is under software control).
J2 –Modem Data Port
•The Unit supports full duplex RS-422 specification signals for transmit and receive data on J2. In
addition, the Unit expects to receive network transmit and receive clocks from the modem with RS-422
specification signals.
J4 – Modem Control Data Port (PC) (This connector is only used in “IU Mode”.)
•The Unit supports full duplex RS-232 specification signals for transmit and receive modem control
signals on J4. This connector, along with J6, is for connecting an external PC/controller. In addition, the
Alarm Horn and the COMSEC / Secure Voice data source switch (“A / B” switch) are controlled by RS-
232 specification signals on this connector.
J5 – Hardware Control Bus Port (Modem)
•The Unit supports full duplex RS-485 specification signals for transmit and receive modem control
signals on J5. The port is designed as a 4-wire port (separate transmit and receive wires) but may be
connected as a 2-wire port (transmit and receive wires connected together), since the transmit buffer is
tri-stated when it is not transmitting.
J6 – Primary Data Port (PC) (This connector is only used in “IU Mode”.)
•The Unit passes signals on this port directly to the COMSEC device Red connector. This connector,
along with J4, is for connecting an external PC/controller.
J7 – DC Power
•The Unit supplies +12 VDC power to this connector for external use. Current drain is limited to 1 Amp
total.
6

CHAPTER 2 INSTALLING and SETTING UP THE UNIT
NT CONFIGURATION
The interconnections between the RFMOW V2 and the RFMOW system must be made as follows:
1. The COMSEC device interface cables within the RFMOW V2 must be connected to the KIV-7. For
KIV-7HSB, mount the 41875 Adapter Board on the back of the COMSEC device.
2. If an external PC/Controller is used, the PC’s COM1 and COM2 must be connected to the RFMOW
V2 ports J6 and J4, respectively.
3. The Secure Voice Unit (SVU) is connected to the RFMOW V2 via J1 on the rear panel.
4. The interconnection between the Control Modem and the RFMOW V2 is made via the J2 and J5
connectors on the rear panel.
**
*
RFMOW MODEM
DataControl
Optional External COMPUTER
(only used in “IU Mode”)
SVU
RFMOW V2
J4 J6
J1
J2J5
**
*
- J8 on SDM-100
- Data I/O on SDM-300A
- J5 on SLM-8650
- J6 on SDM-100/300A
- J2 on SLM-8650
Modem Legend
7

This page left blank intentionally.
8

CHAPTER 3
OPERATION
INTRODUCTION
This chapter provides the information necessary for setup, initialization, and operating the RFMOW V2. This
chapter includes:
NETWORK TERMINAL (NT)
•Controls and indicators
•Equipment power-up
•Equipment power-down
•Equipment Theory of Operation and functional diagrams
CONTROLS AND INDICATORS
The RFMOW V2 user interface is through the front panel display, pushbuttons, and indicators. These are
illustrated on page 17.
EQUIPMENT POWER-UP
WARNING
Ensure that all power connections are properly insulated, clean, and
mechanically secure to prevent personnel injury when the Unit is powered up
and operated. Carefully inspect all connectors and wiring for worn or broken
parts. Make any necessary repairs before powering up the Unit. If any cable or
connector damage is discovered while the Unit is operating, it should be
powered down and the damage repaired immediately.
Perform the following procedure to power up the Unit:
a. Ensure that power is connected to the rear panel of the chassis.
b. Install a KIV in the RFMOW V2 carrier. See page 5 for instructions.
c. Press the RFMOW ON/OFF button on the front panel to turn on the Unit (see page 17 for
location).
d. Refer to TM 11-5895-1780-13 for procedures on installing and operating the RFMOW Software
suite.
EQUIPMENT POWER-DOWN
Perform the following procedure to power-down the Unit:
a. Press the RFMOW ON/OFF button on the front panel.
b. Loosen the four thumbscrews on the front of the KIV carrier. Pull the carrier out of the chassis.
When the carrier stops press the finger releases on each side of the carrier and pull the carrier
the rest of the way out.
9

EQUIPMENT THEORY OF OPERATION
The 41800-002 RFMOW V2 acts as a data-switching and control device between various peripherals
including the satellite modem, secure voice unit, and COMSEC device. The RFMOW V2 can operate in 2
different modes:
•Normal Mode- The RFMOW V2’s internal computer is used for control.
•Interface Unit (or IU) Mode- An external computer is used for control.
Switching is controlled by the RFMOW Software that is installed on the controller computer.
Device Control
The J5 Modem Control connector on the rear panel of the Unit (see page 18) is the Controller Interface. The
controller computer utilizes the COM2 serial port to control the satellite modem within the RFMOW network.
Connector J5 is an RS-422 / RS-485 signaling device. The port can be used as a 4-wire port with separate
transmit and receive wires or as a 2-wire port with the transmit and receive wires tied together. When the
Unit is not transmitting, the transmit wires are open circuit.
“A / B” Switch Operation
In the NT mode of operation, it is necessary to switch between the voice and data paths. In order to control
the “A / B” switch on the RFMOW V2, the controller computer utilizes the COM2 serial port. To switch from
data to voice mode, the computer asserts the DTR line of the communications port. De-asserting DTR
returns Unit to data mode. This functionality is handled automatically using the RFMOW Software as
described in TM 11-5895-1780-13 Replacement Frequency Modulated Orderwire (RFMOW).
ALERT Horn Operation
The ALERT Horn is controlled by the RFMOW Software. The RFMOW Software asserts the COM2 RTS pin
to turn on the Unit’s ALERT horn. De-asserting the RTS pin turns the horn off.
Data Communications
KIV Data communications is controlled by the RFMOW Software. The RFMOW Software uses the COM1
serial port to interface with KIV RED data.
Voice Communications
Voice communication occurs by connecting a Secure Telephone device (STU or STE III) to J1 on the rear
panel of the RFMOW V2. DTR on COM2 must be asserted in order for the Unit to select the voice path on
the “A / B” switch. This is handled automatically using the RFMOW software.
10

CHAPTER 4
TROUBLESHOOTING
WARNING
Proper grounding is an important safety feature, and must be a primary consideration in all electrical and
electronic equipment installations. Ensure that all grounding connections are secure and that all grounding
cables are kept out of vehicle and personnel paths.
WARNING
Use extreme care when working around electrical equipment to avoid the possibility of severe or fatal
electrical shock. Remove all jewelry (i.e. rings, necklaces, etc.) before working with the Unit.
WARNING
Ensure that all power connections are properly insulated, clean, and mechanically secure to prevent
personnel injury when the Unit is powered up and operated. When the power cable is installed, carefully
inspect all connectors and wiring for worn or broken parts. Make any necessary repairs before powering up
the Unit. If any cable or connector damage is discovered while the Unit is operating, the Unit should be
powered down and the damage repaired immediately.
WARNING
Even with covers removed, lethal voltages may still be present inside the Unit. Failure to exercise caution
could result in fatal or serious injury to personnel.
WARNING
AC line voltage is present in this equipment. Use extreme caution and ensure that at least two people are
present while performing inspection, test, and maintenance procedures. Failure to comply may result in fatal
or serious injury to personnel.
WARNING
Ensure that power is removed during the performance of equipment replacement and cleaning procedures.
Do not open equipment enclosures when cleaning. Use of damp cleaning materials can cause shock,
resulting in fatal or serious injury to personnel.
11

WARNING
Hazardous voltages are present. Use care when measuring for voltage. Failure to do so can result in fatal
or serious injury to personnel.
CAUTION
This equipment contains static-sensitive devices. Always follow ESD handling procedures when working on
this equipment.
PROBLEM PROBABLE CAUSE MAINTENANCE TASK
Power LED is off. 1. Power cord is not properly
seated.
2. RFMOW ON/OFF button
has not been pressed.
1. Check power cord for proper
seating.
2. Press the button to turn on the
Unit.
SVU lights are not
functioning. 1. SVU Cable is not properly seated.
2. Controller cable is not
properly seated.
1. Check cable connections at J1
for proper seating.
2. Check J4 cable connections if
using external controller.
Data won’t send 1. Cables are not properly
seated or are in the wrong
location.
2. KIV is not installed or
operating properly.
1. Check cables for proper location
and seating.
2. Make sure KIV is installed and
operating properly.
KIV lights are not
functioning 1. Cable is not properly seated. 2. KIV not properly installed. 1. Check cable connections at J6. 2. Install KIV per page 5.
CONTROL
RCV/XMT lights
are not functioning.
1. Loose or disconnected
COM2 Cable.
2. Loose or disconnected J5
Cable
1. Check J4 Cable if using external
controller.
2. Check J5 Cable
ALERT does not
operate 1. Loose or disconnected COM2 Cable 1. Check J4 Cable if using external controller.
12

CHAPTER 5
SPECIFICATIONS
TECHNICAL CHARACTERISTICS
The 41800-002 RFMOW V2 technical data includes the physical, electrical, and environmental data
described in the following paragraphs.
Physical Characteristics
The 41800-002 physical characteristics are listed in Table 5-1.
Table 5-1 RFMOW V2 Physical Data
Raven 41800-002 RFMOW V2
Characteristics Standard Metric
Measurements:
Width 19.00 inches 48.26 cm
Depth 15.70 inches 39.88 cm
Height 3.46 inches 8.79 cm
Weight (fully loaded, no KIV) 27 lbs. 12.25 kg
Electrical Characteristics
The 41800-002 electrical characteristics are listed in Table 5-2.
Table 5-2 Electrical Data
41800-002 Characteristics Value
Input Power 90 to 264 VAC, 47-63 Hz
Environmental Characteristics
The 41800-002 environmental data is listed in Table 5-3.
Table 5-3 Environmental Data
Characteristics Value
Temperature (Ambient) Non-Operating -40°C to 70°C (-40°F to 158°F)
Operating 0°C to 60°C (32°F to 140°F)
Relative Humidity Non-Operating 10 to 90% Non-Condensing
Operating 10 to 90% Non-Condensing
Altitude Non-Operating To 15,000 ft. above mean sea level
Operating To 10,000 ft. above mean sea level
13

Table 5-3 Environmental Data
Characteristics Value
Shock and Vibration Non-Operating
As encountered during normal
equipment transport by common
carrier as secured cargo by land, sea,
or air, and as encountered during
tactical off-road movement
Operating As encountered during normal
operation and maintenance
EQUIPMENT REQUIRED BUT NOT SUPPLIED
The equipment that is required, but not supplied for the 41800-002 Unit is shown in Table 5-4.
Table 5-4 Government Furnished Equipment
Equipment Remarks
COMSEC Equipment KIV-7 and Secure Telephone Equipment (STEIII) or
Secure Telephone Unit (STU)
OPTIONAL EQUIPMENT NOT SUPPLIED
The optional equipment which is not supplied for the 41800-002 Unit is shown in Table 5-5.
Table 5-5 Optional Equipment
Equipment Remarks
Keyboard and Monitor Assembly Provides for Data Input and Output and Control
Laptop Computer connected through Ethernet Port Provides for Data Input and Output and Control
OPTIONAL EXTERNAL CABLES AVAILABLE WITH THE RFMOW V2
These cables are required for use with the Unit when operating in the RFMOW network:
•Raven R209-0005 for J5 Modem Control to Comtech SDM-300A modem
•Raven R237-0003 for J2 Modem Data to Comtech SDM-300A modem
•Raven R225-0007 for J1 Secure Voice Unit to Secure Voice Unit (STU or STE)
Additionally, these cables are required when operating the RFMOW V2 in “IU Mode”:
•Raven R209-0006 for J4 Controller to External Computer COM2 (RS-232)
•Raven R225-0006 for J6 Modem Data to External Computer COM1 (RS-232)
14

15
APPENDIX A
DIAGRAMS
The following diagrams illustrate the front panel and the rear panel features of the RFMOW V2.

1 2 86 97
12
11
13
141516
10
4 53
17
Figure 1-1 RFMOW V2(Front Panel)
Table 1-1 RFMOW V2 (Front Panel)
ITEM COMPONENT ITEM COMPONENT
1 KIV-7 Carrier (Removable) 10 Voice/Data Mode LEDs
2 Left Speaker 11 Voice RCV/XMT LEDs
3 USB Port 12 Data RCV/XMT LEDs
4 Right Speaker 13 Control RCV/XMT LEDs
5 LCD Display 14 Alert Horn Control Button
6 Display and Cursor Controls 15 Alert LED
7 Power LED 16 Alert Horn
8 Hard Disk Drive LED 17 CD-RW/DVD Access Cover
9 RFMOW V2 ON-OFF Switch
16

17
9
10
Table 1-11 RFMOW V2(Rear Panel)
ITEM COMPONENT ITEM COMPONENT
1 Ethernet Port 10 Modem RF Attenuator In Connector
2 USB Port 11 J5 Modem Control (RS-485) Connector
3 Keyboard Connector 12 J2 Controller Modem Data Connector
4 Mouse Connector 13 J1 Secure Voice Unit Connector
5 J4 Controller Connector (“IU Mode”) 14 COM 4 (RS-232) Connector
6 COM 3 (RS-485) Connector 15 VGA Video Connector
7 J6 Modem Data Connector (“IU Mode”) 16 Pulse Per Second Connector (GPS option)
8 J7 Power Connector 17 GPS Antenna Connector (GPS option)
9 Modem RF Attenuator Out Connector 18 AC Power Connector
19 Grounding Stud
11
8
12
7
Figure 1-2 RFMOW V2 (Rear Panel)
13
5 6
14
4
15
3
16
2
1
171819

APPENDIX B
CONNECTORS (Pin Outs)
Page 18 illustrates the location of external connectors for the 41800-002 RFMOW V2. Figures B-1 through
Figure B-10 illustrate pin outs for these connectors. Connector pin outs are described in Table B-1 through
Table B-10, respectively.
25 14
13 1
Figure B-1 STU III/STE Telephone Connector (J1)
(Female 25 pin D-Sub)
Table B-1 STU III/STE Telephone Connector (J1)
Pin # Description Pin # Description
1 Not Used 14 Not Used
2 RS-232 Data From the STE Phone 15 RS-232 Transmit Clock **
3 RS-232 Data To the STE Phone 16 Not Used
4 Not Used 17 RS-232 Receive Clock **
5 +12 V 18 Not Used
6 +12 V 19 Not Used
7 Ground 20 Not Used
8 +12 V 21 Not Used
9 Not Used 22 Not Used
10 Not Used 23 Not Used
11 Not Used 24 Not Used
12 Not Used 25 Not Used
13 Not Used
** Under software control, the STU III/STE Transmit and Receive Clocks are divided by 1,2,4 or 8 from the
network data rate clock.
+12 V power is supplied through a 1000 ohm resistor.
18