PRIZM RS-422, RS-485, RS-232 User Manual

Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

RS-422/485 Submux2 Motherboard (P/N 200690-

xxx) and Daughtercards (4 ch. RS-232 P/N 970391-

xxx, 4ch. RS-485 / 2 ch. RS422 P/N 980430-xxx,

and Trigger Interface P/N 200700-XXX)

User’s Manual

And

Troubleshooting Guide

Springfield Operations

Springfield, PA 19064

E-Mail: [e-mail] URL: www.moog.com/components

24/7 Technical Customer Support Hotline: [phone]

Page 1 of 19

February 24, 2009

Rev. D

Moog Components Group

750 West Sproul Road

Tel: [phone] Fax [phone]

Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

1 RS-422/485 Submux2 Motherboard, Part Number 200690-xxx. ........................................................... 3

1.1 RS-422/485 Submux2 Revision History: ....................................................................................... 3

1.2 RS-422/485 Submux2 Dash (-) Number Definitions...................................................................... 3

1.3 Manual Revision History:............................................................................................................... 4

1.4 RS-422/485 Submux Motherboard Operation: ............................................................................... 4

1.4.1 RS-422/485 Submux2 Front Panel Indicators:........................................................................ 4

1.4.2 RS-422/485 Submux2 Motherboard Specifications: ............................................................... 5

1.4.3 RS-422/485 Submux2 Dimensions:........................................................................................ 5

1.4.4 RS-422/485 Submux2 Power Requirements: .......................................................................... 5

1.5 Submux2 Motherboard Troubleshooting........................................................................................ 5

1.5.1 Submux2 Motherboard Board Level Testing ......................................................................... 6

1.5.2 Submux2 Motherboard Data Loop-Back Test ........................................................................ 7

1.5.3 Test Data Channels ................................................................................................................. 7

2 4-Channel RS-232 Daughterboard, Part Number 970391-xxx ................................................................ 8

2.1 4-Channel RS-232 Daughterboard Revision History...................................................................... 8

2.2 4-Channel RS-232 Daughterboard Dash (-) Numbers .................................................................... 8

2.3 4-Channel RS-232 Daughter board Operation:............................................................................... 9

2.3.1 4-Channel RS-232 Daughterboard Indicators:........................................................................ 9

2.3.2 4-Channel RS-232 Daughterboard Specifications: ................................................................. 9

2.3.3 4-Channel RS-232 Daughterboard Dimensions:..................................................................... 9

2.3.4 4-Channel RS-232 Daughterboard Power Requirements: .................................................... 10

2.4 RS-232 Submux Daughtercard Troubleshooting.......................................................................... 10

2.4.1 RS-232 Submux Daughtercard Board Level Testing ........................................................... 10

2.4.2 RS-232 Daughterboard Data Loop-back Test....................................................................... 11

2.4.3 RS-232 Driver Chip Channel Selection................................................................................ 11

3 4-Channel RS-485 / 2-Channel RS-422 Daughterboard, Part Number 980430-xxx.............................. 12

3.1 4-Channel RS-485 Daughterboard Revision History: .................................................................. 12

3.2 4-Channel RS-485 Daughterboard Dash (-) Number Definitions: ............................................... 12

3.3 4-Channel RS-485 Daughterboard Operation:.............................................................................. 13

3.3.1 Setting RS-485 Data Rates ................................................................................................... 13

3.3.2 Selecting RS-422 .................................................................................................................. 13

3.3.3 4-Channel RS-485 Daughterboard Indicators:...................................................................... 13

3.3.4 4-Channel RS-485 Daughterboard Specifications: ............................................................... 14

3.3.5 4-Channel RS-485 Daughterboard Dimensions:................................................................... 14

3.3.6 4-Channel RS-485 Daughterboard Power Requirements: .................................................... 14

3.4 RS-485/RS-422 Submux Daughterboard Troubleshooting .......................................................... 14

3.4.1 Board Level Testing ............................................................................................................. 15

3.4.2 RS-485 Channel Data Test ................................................................................................... 15

3.4.3 RS-422 Channel Data Loopback Test .................................................................................. 16

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Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

1 RS-422/485 Submux2 Motherboard, Part Number

200690-xxx.

The Prizm RS-422 / 485 Sub-multiplexer
(Submux2) motherboard provides four RS-422 or
RS-485 channels that are multiplexed onto a single
Prizm high-speed serial data channel. Motherboard
channel selection of RS-422 or RS-485 can be
simply done by selecting a few jumpers and can be
accomplished on a channel-by-channel basis for
mixed data applications. With the addition of up to

three additional pluggable daughter boards, a total
of 16 independent serial channels can be carried on a single Submux2. The combinations of
types of channels (RS-232, RS-422, and/or RS-485) will vary depending on the type and
configuration of daughtercards. Multiple Submuxs can be used on a system depending on
configuration of other channels within the system.

Each RS-232, RS-422 or RS-485 data channel is electrically isolated and independently
powered. Each RS-232 or RS-485 channel can support up to 115.4 Kilobaud while each
RS-422 channel can support at least 250 Kilobaud

Note: The Submux2 motherboard is NOT compatible with the earlier
Submux1 motherboard however all of the earlier daughterboards ARE
compatible with the Submux 2 motherboard. The Submux2 motherboard
should be replaced as set.

1.1 RS-422/485 Submux2 Revision History:

The Submux2 motherboard has gone through the following printed circuit board (PCB) and
Assembly revisions:

PCB Revision A/Assembly Revision A Original design

PCB Revision A/Assembly Revision B Incorporates following ECO:
ECN 201205C – Add fail safe resistors to RS-485 circuit.
ECN 200690-01 - Change fuse from FU0005 to FU0014
ECN 200690-02 - Add glitch filter to RS-485 circuit

1.2 RS-422/485 Submux2 Dash (-) Number Definitions

The Submux2 motherboard has a Dash Number appended to the part number. This Dash
Number identifies the specific board configurations:

-001 original configuration.

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Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

1.3 Manual Revision History:

The manual has gone through the following revisions:
Revision A Original
Revision B 1/12/01 Incorporated DC Power measurements
Revision B2 1/26/01

Revision C 4/19/01 Added in Trigger Interface
Revision D 2/24/09 Updated contact information to reflect Moog Components Group

Minor corrections

1.4 RS-422/485 Submux Motherboard Operation:

On VIDEO 3 systems, the Submux2 motherboard is connected to the PRIZM fiber optic
modem via the backplane. On older VIDEO1 and VIDEO 2 systems, the Submux2 is
connected to the Prizm fiber optic multiplexer either directly through the backplane or
optionally it may be connected via ribbon cable to a Video board. On the systems that
utilize the ribbon cable, if the Submux2 is connected to Video Board #1 in the surface unit,
it’s companion Submux2 board set must be connected to Video Board #1 in the sub-sea unit.

There are four green 5-pin Phoenix MicroCombicon connectors on the on the front of the
Submux2 motherboard; the top pin is for transmitted data (TXD), the bottom pin for
received data (RXD) and the middle pin for signal ground (GND).

1.4.1 RS-422/485 Submux2 Front Panel Indicators:

There is a single green LED indicator (LED2) at the top of the board to indicate +5VDC
power status. LED2 will be lit if +5VDC is available.

The status of the high-speed data channel linking the surface Submux2 to the vehicle
Submux2 motherboard is indicated by a dual green LED indicator (LED4) which is the
second row of LEDs from the top of the board. The left (or bottom) LED indicates the
receive link status (RLINK) from the Prizm multiplexer. If this LED is lit, the Submux2
board is receiving both RX clock and RX data from the multiplexer. The right (or top) LED
indicates the transmit link status (TLINK) to the Prizm multiplexer. If this LED is lit, the
Submux2 board is receiving the TX clock and is generating TX data. Both LEDs on LED4
MUST be lit before sub-multiplexed data will travel through the Prizm multiplexer to the
other Submux2 board (and vice versa).

Once both LEDs on LED4 are lit, the individual RS-422/485/232 data channels are active.
The dual green LEDs (LED4, 7, 10, and 12) will flash to indicate transmit and receive data
traffic on a per channel basis. For each of the channels, the left (or bottom) LED indicates
activity on the TXD set of pins and the right (or top) LED indicates activity on the RXD set
of pins.

Note: Sometimes the flashing may be to fast to see and the LED may appear to be on all
the time.

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Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

Note: Since the data channels are electrically isolated from each other and from the
Prizm multiplexer DC ground, testing of the channels with an oscilloscope or meter
requires that the appropriate channel ground wire be attached to the test equipment's
ground.

1.4.2 RS-422/485 Submux2 Motherboard Specifications:

Number of data Channels: 4 on Motherboard (RS-422 or RS-485), up to 16 channels

total with 3 daughtercards in place
Data type supported: RS-232, RS-422, and RS-485
Data rates supported: RS-232 - up to 115 Kbaud
RS-485 - up to 230 Kbaud
RS-422 - above 250 Kbaud
Per channel sample rate: 3.125 Msps(typical) for each of the 16 channels.

1.4.3 RS-422/485 Submux2 Dimensions:

VME 3-U format - 100 mm wide x 160 mm long x 20 mm thick (3.937 x 6.299 x 0.80 in)

VME 3-U PCB and faceplate in rack: 20 mm wide x 128 mm high (0.8 in x 5.05 in)

1.4.4 RS-422/485 Submux2 Power Requirements:

+5 Volts at 0.53 Amps (2.65 Watts)

1.5 Submux2 Motherboard Troubleshooting

In normal operation the following front panel mounted LED status should be observed:

+5VDC power LED (LED2) – Lit green on front panel
LINK LED (dual LED3) on front panel

left RLINK LED - Lit green if receiving link from Modem
right TLINK LED - Lit green transmitting link to Modem

RS-422/485 Data Activity LEDs (dual LED on each channel, LED4, 7, 10,12):

-- TXD LED - Left (or bottom) LED lit green if data going out of channel

-- RXD LED - Right (or top) LED lit green if data going into channel

In normal operation the following surface mounted LED status should be observed:

Channel 1 Isolated +5VDC power LED (LED1) – Lit green
Channel 1 RS-485 Activity LED (LED5) – Lit green to enable receiving RS-485

data (default condition)

Channel 2 Isolated +5VDC power LED (LED6) – Lit green

Channel 2 RS-485 Activity LED (LED8) – Lit green to enable receiving RS-485

data (default condition)

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Moog Components Group RS-422/RS-485 Submux2 rev. D February 24, 2009

Channel 3 Isolated +5VDC power LED (LED9) – Lit green

Channel 3 RS-485 Activity LED (LED11) – Lit green to enable receiving RS-485

data (default condition)

Channel 4 Isolated +5VDC power LED (LED13) – Lit green

Channel 4 RS-485 Activity LED (LED14) – Lit green to enable receiving RS-485

data (default condition)

1.5.1 Submux2 Motherboard Board Level Testing

If DC power LED is out:

• Make sure +5VDC is available at the backplane connector.

• If using external +5VDC at J6, check 2Amp fuse (F1) with ohmmeter, replace with

another PICO fuse if blown otherwise this fuse is not in circuit

If + 5VDC is measured at connector and DC Power LED is not lit green:

• Check LED circuit

If +5VDC is not found:

• Test for power at the backplane and power supply (See Power Supply and Backplane

sections of the manual).

• Replace board

If the TLINK LED (right (or top) LED) is out:

• If +5VDC power is available, TLINK LED should be always lit. LED will be off for

a fraction of a second after board is plugged in.

• Replace board

If the RLINK LED (left (or bottom) LED) is out:

• Check that local Modem board is plugged in

• Check that Submux2 board at other end of link is plugged in.

• Check that the multiplexer on the remote end is operating by checking the Modem’s

DATA and FIBER LEDs.

• Run the Submux2 data loop back test described below, checking each channel and its

LEDs

• If still not operational, replace with spare board

If the RLINK and all the RXD/TXD LEDs are flickering:

• Check for high link error rate which will cause the Modem’s DATA LED to flicker

and cause the Modem’s ERR LED to flicker or light solid

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