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CUSTOMER

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Black Box Corporation

, 1000 Park Drive, Lawrence, PA 15055-1018

Web site:

www.blackbox.com

• E-mail:

[email protected]

NOVEMBER 1993

MX035A

MX035A-ST

MX035AE

MX035AE-ST

MX036A

MX036A-ST

MX036AE

MX036AE-ST

RS-232 to Fiber Optic Multiplexor

RS-232 FIBER MUX-16

SDCD

POWER

Содержание MX035A

Страница 1: ...ours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com NOVEMBER 1993...

Страница 2: ...erence in which case the user at his own expense will be required to take whatever measures may be necessary to correct the interference Changes or modifications not expressly approved by the party re...

Страница 3: ...Optical Cable Connection 8 3 4 Channel Cable Connection 9 4 Configuration and Operation 10 4 1 Modes of Operation 10 4 2 Operating the Multiplexors 13 4 3 Interface Description 13 5 Troubleshooting 18...

Страница 4: ...user selectable Clock Internal or external from local DTE user selectable Operating Mode Full duplex over dual fiberoptic cable Speeds Channel Asynchronous Transparent to all speeds up to 19 200 bps S...

Страница 5: ...T female Leads Signals Supported RS 232 1 PGD 2 TXD 3 RXD 5 CTS 6 DSR 7 SGD 8 DCD 14 STXD 15 TXC 17 RXC or SRXD and 20 DTR Power MX035A MX036A units Directly from outlet Input range 95 to 130 VAC 50 t...

Страница 6: ...p to 19 200 bps in the asynchronous modes and is transparent to sub protocols and data formats in both the asynchronous and synchronous modes 1 The first mode of operation is single channel asynchrono...

Страница 7: ...l see Figure 2 1 below of the mux has no controls but has two LED indicators in the lower right hand corner The red LED at the extreme right is the POWER ON indicator The green LED to its left labeled...

Страница 8: ...channel The 16 channel unit has 16 connectors and switches the 8 channel unit has 8 connectors and switches with a cover plate over the unused slots 6 Locking Screw Sockets 2 per connector 4 40 threa...

Страница 9: ...ting screws to hold the internal printed circuit board in place DO NOT REMOVE ALL THE SCREWS AT THE SAME TIME Remove only one foot at a time and replace its mounting screw with a 4 40 x 3 16 inch flat...

Страница 10: ...or must be mounted to allow unobstructed air flow into and out of the perforations in the sides and top of the mux chassis If the mux is mounted in a rack cabinet minimum air flow of 120 cubic feet 3...

Страница 11: ...ux at one end of the cable and the receiver of the second mux at the other end of the cable Before connecting optical cables to the mux s optical transmitter and receiver verify that both the cable te...

Страница 12: ...eaded standoff is located at each end of the connector to accept locking screws from the male cable connector Unless the connection to an individual channel is expected to be temporary we recommend th...

Страница 13: ...lect the operating mode of each channel with the DIP switch located directly above that channel s connector The function of each position in the switch is indicated by the chart in the upper left hand...

Страница 14: ...IPLE ASYNCHRONOUS DATA LINES WITHOUT CONTROLS MODE 3 In this mode data is carried on not only the normal data line but across the DTR CTS control line and the auxiliary line as well allowing you to at...

Страница 15: ...e remote multiplexor The remote mux which can be set for either internal or external clocking will output the clock signal from the local mux on Pin 17 of the corresponding channel s connector Data Te...

Страница 16: ...e muxes have no AC power switch Each multiplexor is turned ON and OFF by plugging and unplugging its power cord Verify that the red POWER LED of each multiplexor comes on when AC power is connected an...

Страница 17: ...ata Carrier Detect go to the negative MARK or OFF state if the optical signal is not being received from the other multiplexor Also all inputs will appear to be a negative level if they are left open...

Страница 18: ...XC Pin 17 and Secondary Transmit Data STXD Pin 14 The received signal that appears as an output at Pin 17 Receive Clock of one of the local multiplexor s channels has two possible sources at the remot...

Страница 19: ...mote Signal Device Mux Pin Mux Mux Mux Pin Device TXD O 2 3 D RXD RXD D 3 2 O TXD CTS D 5 20 O DTR DSR D 6 V O O V 6 D DSR Sig Gnd 7 7 Sig Gnd DCD D 8 V O O V 8 D DCD DTR O 20 5 D CTS Channel is in Mo...

Страница 20: ...Data Carrier Detect signals these can be provided in the following ways Data Set Ready Pin 6 of the 3 to 1 adapter cable s female connector s must be wired to Pin 6 of the cable s male connector Data...

Страница 21: ...ection 4 3 3 3 Check for the possibility of interface incompatibilities between the multiplexor and the particular terminal devices being used 4 Verify that the proper protocol synchronous or asynchro...

Страница 22: ...male and female RS 232 connectors with all pins connected straight through except Pins 4 and 5 Request To Send and Clear to Send respectively Between these pins is a gating circuit that holds Clear to...

Страница 23: ...end at the other end of the system goes ON and OFF Note that Clear to Send is not affected by Request To Send unless a gating adapter refer to Section 5 2 Step 6 is used If a gating adapter is used Cl...

Страница 24: ...demultiplexing circuits twice in a remote loop test the maximum data rate is only half the maximum that can be transmitted in an end to end test For internally clocked synchronous tests the maximum da...

Страница 25: ...ped with continuous errors the cable may be too short to avoid overloading the optical receiver If you have a longer cable replace the short cable and try again If you don t have a longer cable unscre...

Страница 26: ...cable is faulty If both signals are strong at the receiver ends of the cables one of the receivers is probably faulty Replace faulty cables send muxes with faulty transmitters or receivers back to us...

Страница 27: ...r very short distances not more than 2 to 3 inches 5 to 7 6 cm Place the two multiplexors on a flat surface with the rear corners facing each other and the optical transmitter and receiver connectors...

Страница 28: ...in one direction but not data transmitted in the other direction the cause of the problem can be isolated by reversing the fiberoptic cable connections at both multiplexors as described in Step 3 of t...

Страница 29: ...e description including the nature and duration of the problem when the problem occurs the components involved in the problem any particular application that when used appears to create the problem or...

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