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Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 SUPPORT Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018 INFORMATION Web site: www.blackbox.com • E-mail: info@blackbox.com...
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TRADEMARKS TRADEMARKS USED IN THIS MANUAL UL is a registered trademark of Underwriters Laboratories Incorporated. Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.
MIL 188C. Configured by the user. Either sync or async, depending on the model. Operation — IC235A: Async; IC236A: Sync Leads Supported — MIL 188C: Async: 1, 2, 3, 4, 5, 6, 7, 8, 20, 24; Sync: 1, 2, 3, 4, 5, 6, 7, 8, 15, 17, 20, 24;...
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2.5"H x 8"W x 6.25"D (6.4 x 20.3 x 16 cm) Weight — With power supply, 3 lb. (1.4 kg) A DB37 female connector may be specified as an option for the MIL 188 interface. Contact Black Box in order to request this option.
CHAPTER 2: Introduction 2. Introduction 2.1 Description The RS-232↔MIL Standard Interface Converter is a bi-directional converter enabling you to connect RS-232 equipment to MIL 188/114 or 188C equipment. The Converter is available in synchronous and asynchronous models. The MIL Standard interface is pinned to the RS-530 mechanical specs.
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RS-232 Any MIL 188/114 DCE Device RS-232 MIL 188/114 RDA(-) RDB(+) TDA(-) TDB(+) (DTE) (DCE) (DTE) Ground Optional for Balanced Cable Pinout RS-232 Any MIL 188C DCE Device RS-232 MIL 188C 3 (RD) 2 (TD) 7 (SG) (DTE) (DCE) (DTE) Cable Pinout Figure 2-2.
3. Installation Figure 3-1 shows the location of components on the interface converter’s circuit board. These components are described later in this chapter. POWER MIL 188 RS232 POWER Figure 3-1. The Circuit Board.
CHAPTER 3: Installation 3.1 Installing the Converter Before attempting to install the interface, read these steps. 1. Make sure the package came with everything that should be included. You should have received the RS-232↔MIL Standard Interface Converter, this manual, and the wall-mounted power supply (either 115 or 230 VAC).
3.2 Setting the RS-232 Interface In order for the interface converter to operate properly, the RS-232 interface must be set for either DCE or DTE operation. This can be done by setting the push-on jumpers located on W1 (see Figure 3-2). Each pin of the RS-232 interface on the unit must be set either DCE or DTE, opposite to the DCE/DTE status of the equipment you intend to connect to the RS-232 side of the converter.
CHAPTER 3: Installation 3.3 Setting the Interface Converter for MIL 188/114 Mode Jumpers W2 through W6 are used to configure the MIL 188 connector on the interface converter for MIL 188/114 operation. Figure 3-3 shows an isolated graphic of jumpers W2 through W6 set for DCE operation. Each jumper must be configured for either DCE or DTE operation.
3.4 Setting the Interface Converter for MIL 188C Mode Jumpers W2C through W6C are reserved for MIL 188-C mode. Refer to Figure 3-4 for an illustration of these jumpers and to Figure 3-1 for their position on the interface converter’s circuit board. In order for the interface converter to operate properly with your MIL 188-C device, you must set these jumpers for either DCE or DTE operation, depending on the DTE/DCE status of your MIL 188-C device.
CHAPTER 4: Status Indicators 4. Status Indicators Both synchronous and asynchronous models are equipped with the LED status indicators listed below. The tables on the next pages explain the definition and function of each LED for the two possible connector configurations.
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Configuration: RS-232 (DTE) MIL 188 (DCE) LED Indicator Definition Function Transmit Data Indicates that data is flowing from MIL 188 to RS-232. Receive Data Indicates that data is flowing from RS-232 to MIL 188C. Request to Send Indicates that CTS is being received from the RS-232 device.
CHAPTER 5: Troubleshooting 5. Troubleshooting If you experience any difficulty with your RS-232/MIL 188 setup, follow these steps to find a solution: 1. Make sure that all the devices in the setup are configured properly. Check DIP switches and jumpers in each device to ensure they are set correctly.
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Next, type a few characters on the PC or terminal keyboard. If the same characters you’ve typed appear on the screen, the converter’s data transmitting/receiving capabilities and handshaking functions are performing properly. Check the RS-232 and MIL 188C equipment you are connecting to the interface converter again.
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CHAPTER 5: Troubleshooting The loopback-test procedure: Connect a PC or dumb terminal to the RS-232 side of the interface converter via a cable with a DB25 male connector. (This cable must have straight- through pinning; none of its leads can be shorted together. Plus, the RS-232 side of the converter must be set to DCE.) Then, on the MIL 188/114 interface, short pins 19 and 13 together, pins 4 and 5 together, pins 20, 6, and 8 together, pins 23, 22, and 10 together, pins 2 and 3 together, and...
Appendix A: Signal Flow Diagrams This appendix is devoted to signal-flow diagrams that show the functions of various pins on the RS-232 and MIL 188 interfaces under different configurations. RS-232 (configured DCE) MIL 188/114 (configured DTE) CHASSIS GND 1 1 SHIELD TDA (-) TD LED TD 2...
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APPENDIX A: Signal Flow Diagrams RS-232 (configured DTE) MIL 188/114 (configured DCE) CHASSIS GND 1 1 SHIELD TDA (-) RD LED TD 2 14 TDB (+) RDA (-) TD LED RD 3 16 RDB (+) RTSA (-) CTS LED RTS 4 19 RTSB (+) CTSA (-) RTS LED...
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RS-232 (configured DCE) MIL 188/114 (configured DTE) CHASSIS GND 1 1 SHIELD TDA (-) TD LED TD 2 14 TDB (+) RDA (-) RD LED RD 3 16 RDB (+) RTSA (-) RTS LED RTS 4 19 RTSB (+) CTSA (-) CTS LED CTS 5 13 CTSB (+)
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APPENDIX A: Signal Flow Diagrams RS-232 (configured DTE) MIL 188/114 (configured DCE) CHASSIS GND 1 1 SHIELD TDA (-) RD LED TD 2 14 TDB (+) RDA (-) TD LED RD 3 16 RDB (+) RTSA (-) CTS LED RTS 4 19 RTSB (+) CTSA (-) RTS LED...
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RS-232 (configured DCE) MIL 188C (configured DTE) CHASSIS GND 1 1 SHIELD TD (+) RD LED TD 2 TD LED RD (+) RD 3 RTS (-) RTS LED RTS 4 CTS (-) CTS LED CTS 5 DCE READY (-) DSR 6 SIGNAL GND 7 7 SIGNAL GND 20 DTE READY (-)
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APPENDIX A: Signal Flow Diagrams RS-232 (configured DTE) MIL 188C (configured DCE) CHASSIS GND 1 1 SHIELD TD (+) RD LED TD 2 TD LED RD (+) RD 3 RTS (-) CTS LED RTS 4 CTS (-) RTS LED CTS 5 DCE READY (-) DSR 6 SIGNAL GND 7...
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RS-232 (configured DCE) MIL 188C (configured DTE) CHASSIS GND 1 1 SHIELD TD LED TD (+) TD 2 RD LED RD (+) RD 3 RTS (-) RTS LED RTS 4 CTS (-) CTS LED CTS 5 DCE READY (-) DSR 6 SIGNAL GND 7 7 SIGNAL GND 20 DTE READY (-)
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APPENDIX A: Signal Flow Diagrams RS-232 (configured DTE) MIL 188C (configured DCE) CHASSIS GND 1 1 SHIELD TD LED TD (+) TD 2 RD (+) RD LED RD 3 RTS (-) CTS LED RTS 4 CTS (-) RTS LED CTS 5 DCE READY (-) DSR 6 SIGNAL GND 7...
Appendix B: The Interfaces This appendix is devoted to the RS-232, RS-530, and power interfaces. The MIL 188/114 and MIL 188C interfaces are based on the RS-530 interface standard. Figures B-1 and B-2 illustrate these interfaces and label the pins on each.
APPENDIX B: The Interfaces RS-530 Interface (Female) SIGNAL SIGNAL DESTINATION NUMBER NUMBER DESTINATION SHIELD (A) 14 TRANSMITTED DATA (B) TRANSMITTED DATA (A) 15 TRANSMITTER SIGNAL ELEMENT DCE (A) RECEIVED DATA (A) 16 RECEIVED DATA (B) REQUEST TO SEND (A) 17 RECEIVER SIGNAL ELEMENT TIMING DCE (A) CLEAR TO SEND (A) 18 LOCAL LOOPBACK DCE READY (A)
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