Miranda NTW-VD3232 User Manual

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USER MANUAL

NTW-VD3232

Network Routing Switcher Series

DIGITAL VIDEO ROUTER - 32x32

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Index

0. Revision history 3

1. General 4

1.1. Specifications 4

1.2. Connection drawing 5

2. Power connection 5

3. Connecting the NTW-VD3232 to your PC 5

3.1. Selection of router address 5

3.2. Pi n - ou t of RS-232 con nector 5

3.3. Maximum cable length 6

4. MIDI connection 6

4.1. Several routers in one system 6

4.2. Connecting control panels 6

4.3. Pin-out and cable type 7

4.4. MIDI bus structure 7

4.5. Maximum distance between MIDI devices 7

5. Router configuration 7

5.1. Router address 7

5.2. Router mode 8

5.3. Vertical interval trigger 13

5.4. Power up mode 13

6. Connecting video signals to the NTW-VD3232 14

7. Control and connection of Network systems, interf ace protocol 14

7.1. Important notes regarding th e Network Control Protocol 14

7.1.1. Binary Code 14

7.1.2. Acknowledge / Echo 14

7.1.3. RS-422 Matrixes 14

7.1.4. Timeout 14

7.2. Basic principles 14

7.2.1. Example: A single unit with no MIDI connected 14

7.2.2. Example: Several units connected by MIDI 14

7.3. RS232 15

7.4. MIDI 15

7.5. Commands 15

7.5.1. Audio crosspoint set 15

7.5.2. Video crosspoint set 16

7.5.3. Crosspoint status request 16

General Environmental Requirements for Network Electronics Equipment 17

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0. Revision history

Current revision of this document is the uppermost in the table below.

Revision Replaces Date

0 - 10/10/00 Initial Revision

Chan ge Description

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1. General

The NTW-VD3232 is a 32x32 serial digital video router with vertical interval switching. This state of the art router provides
maximum quality with a data rate of up to 540 Mbit/s and automatic cable equalising on all inputs. High performance circuits
in SMD technology assure undiminished signal quality. Th e NTW-VD3232 is well suited for all demanding routing tasks in
digital studio an d broadcast environments. The built-in RS-232 interface allows the user to control the router via the i­Contr ol PC software with man y operati onal featur es. The control bus tech nology allows linking th e unit with the NT W­A3232 or NTW-AD3232 to create an AFV router. One or several NTW-32-ProX-Y remote control panels can control the
NTW-VD3232 as well. Another un ique feature of the Network 32x32 series is the possibility to reconfigure the router via the
configuration switch on the back plane to cr eate several formats of routers:

32x32 Serial Digital Video 1 layer
16x16 Serial Digital Video 2 layer
10x10 Serial Digital Video 3 layer
8x8 Serial Digital Video 4 layer

1.1. Specifications

Data rate: 143Mbit/s - 540Mbit/s
VIT input: Comp. Video 1Vpp, 300mV sync, looped, 75ohms
Number of inputs: 32 terminated
Equalisation: Automatic up to 300m ( Belden 8281 )
Number of outputs: 32
Impedance: 75 ohms
Return-loss: > 18dB (10MHz-270MHz)
Signal level: 800mV fixed, 75 ohms load
Rise/fall time: typ. 700ps
Connector: BNC
RS-232 interface: 19200 baud
AC power: External power supply 100 - 260 VAC
DC power: +5V, connector DB9 male
Dimensions: 483 x 122 x 120 mm (19”, 3RU)

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1.2. Connection drawing

Configuration switch
Video input section Video output section

RS-232 port MID I bus P ower connector

Vertical inter val trigger

2. Power connection

Do not connect mains to the desk top power supply before connecting the power supply to the router.

Connect the DB9 female connector from the desktop power supply to the main unit. Tighten the screws to assure a proper
contact. To connect mains to the desk top power supply you need a mains cord with IEC 320 connector. NTW-VD3232 uses
the desk top power model

If an external power supply is used the NTW-VD3232 router requires +5V DC with a minimum current of 4100mA. The
followin g pi n - ou t is u sed on th e DB9 ma le power conn ector :

Pin 1 and 9 0V
Pin 2 and 5 +5V

AC-10-87-30-005 (±5V / 30W)

.

3. Connecting the NTW-VD3232 to your PC

For connection to a PC with Miranda’s i-Control control software the RS-232 interface is used. The
RS-232 port on all N etwork d evices uses the standard DCE pin -out, see pin-out table under 4.3.
A standard modem cable can be used for connecting the router to the PCs serial port. The RS-232 interface for all Network
32x32 routers works with a baud rate of 19200.

3.1. Selection of router address

The router address depends on t he system configuration the router is going to work with. See chapter 5 for more information.
All routers are delivered with default address 0. A router addressed to 0 can be controll ed from the i-Con trol s oftwa re with
address 0. i-Control offers the control of up to 16 different routers or combinations of routers.

3.2 . Pin-out of RS-232 connector

The DB9 femal e connector for th e RS- 232 por t h as t h e foll owin g pi n -ou t :

Pin 3 Rx
Pin 5 GND

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Pin 2 Tx

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3.3. Maximum cable length

The maximum cable length for an RS-232 connection is per definition 15m. Longer distances can be installed depending on
the environm enta l conditions of the installation site. It is up to the installer / user to secure a proper installation of the RS­232 connection.

4. MIDI connection

Via t he MIDI bus system sever al rou ters and control panels can be interconnected. Th e stan dard MIDI interface is used on a ll
Network MIDI control ports. For interconnect ion between the devices a standard MIDI cable with 5pin DIN connector on
both ends is used. The Network MID I bus system allows connection of up to 16 routers with different ad dresses on the same
bus. Routers which are defined to work married, e. g. 2 router s as Audio follow Video or 3 rou t ers as RGB (YUV) m ust be set
on the same address. Control panels dedicated to work with a specific router must have the same address as the router.
Several pan el s can wor k tog eth er wit h on e specifi c rou ter . Up to 16 single r out er s or combinat ion s of router s can be
controlled fr om one i-Con trol control screen. The MIDI bus system and all RS-232 port s in terchang e the system status.

4.1. Several routers in one system

The Network MIDI bus system al lows the inter connection of up to 16 routers with different addresses in one system. A
combination of routers working married counts as one address. Th is might for example be 1 audio router + 1 video router
working as an audio follow video system or 3 video routers workin g as a RGB (YUV) s ystem. T he r outers in such a
constellation have to have the same add ress.

4.2. Connecting control panels

To get a cont rol panel workin g with a specific router, g ive the control panel the same address as th e router. Sever al pa nels
can be addressed to the same router. The X-Y panels can control 2 layers with br eakaway function. If it is necessary to
control more layers with breakaway an additional panel must be used.

Panels can also be connected to a router via the RS­232 interface. Please refer to your control panel manual for installation. Attention: Only NTW-32-Pro panels can be
used together with NTW-VD3232 when connecting via RS-232.

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4.3. Pin-out and cable type

The pin-out of all Network MIDI ports follows the standard MIDI specification.
A 1 to 1 cable with 5pin DI N connector is used. The f ol lowing pin-out is used:

1 - n.c. 1 - n.c.
2 - shield # # # # # # # # # # # # # # # # # # # # # # 2 - shield
3 - n.c. 3 - n.c.
4 - data - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4 - data data li nes must

5 - data - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5 - data be twisted pair

The standard MIDI specificati on recommends the use of shielded twisted pair cable types for interconnecti on between the
units.

4.4. MIDI bus structure

The Network MIDI bus str ucture follows the st anda rd MIDI bus definition .

The Network MIDI bus is defined as a closed
chain of units. This means that the MIDI OUT of the last unit must be connected to the MIDI IN of the first unit in the
MIDI chain

. To avoid p roblems with the control of Network
units the installer/user has to assure that the bus structure is installed according to this definition. The total number of MIDI
devices in a MIDI chain is limited to 50.

4.5. Maximum distance between MIDI devices

The standard MIDI definition a llows a maximum cable length of 250 meters between two devices. Longer distances can be
made with MIDI repeater units. To avoid grounding problems all Network MIDI ports have opto-coupled inputs.

5. Router configuration

5.1. Router address

Switch 1 - 4 on the configuration switch SW A set the r outer’s address for communication with the
i-Control software and other units in th e MIDI bus system. The i-Control control screen and the panels on the MIDI bus
dedicated to op erate with t he r outer have to have the same add ress. If several routers ar e combined to form an Au dio Follow
Video, RGB or similar system, t hese rou ters h ave to ha ve the same address.

The addresses can be switched according to the fol lowing pattern:

- means switch down
* means switch up

Default address is 0.

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Switch 1 2 3 4 Address

- - - - 0

- - - * 1

- - * - 2

- - * * 3

- * - - 4

- * - * 5

- * * - 6

- * * * 7
* - - - 8
* - - * 9
* - * - 10
* - * * 11
* * - - 12
* * - * 13
* * * - 14
* * * * 15

5.2. Router mode

The NTW-VD3232 router allows switching in different modes. You can choose among:

32x32 Serial Digital Video 1 layer
16x16 Serial Digital Video 2 layer
10x10 Serial Digital Video 3 layer
8x8 Serial Digital Video 4 layer

Switch 5 - 6 on th e configuration switch SW A set the router’s m ode. The i-Contr ol software m ust be con f igured according to
the mode ch osen on the router.

The modes can be switched according to th e following pattern:

- means switch down
* means switch up

Switch 5 6 Mode

- - 32x32 Serial Digital Video 1 layer

- * 16x16 Serial Digital Video 2 layer
* - 10x10 Serial Digital Video 3 layer
* * 8x8 Serial Digital Video 4 layer

Default mode is 32x32 Serial Digital Video 1 layer.

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Serial Digital Video 1 layer

SDV Signal Input SDV Signal Output

1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
7 7 7 7
8 8 8 8
9 9 9 9
10 10 10 10
11 11 11 11
12 12 12 12
13 13 13 13
14 14 14 14
15 15 15 15
16 16 16 16

17 17 17 17
18 18 18 18
19 19 19 19
20 20 20 20
21 21 21 21
22 22 22 22
23 23 23 23
24 24 24 24
25 25 25 25
26 26 26 26
27 27 27 27
28 28 28 28
29 29 29 29
30 30 30 30
31 31 31 31
32 32 32 31

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Serial Digital Video 2 layer

SDV layer 1 Input SDV layer 1 Output

1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
7 7 7 7
8 8 8 8
9 9 9 9
10 10 10 10
11 11 11 11
12 12 12 12
13 13 13 13
14 14 14 14
15 15 15 15
16 16 16 16

SDV layer 2 Input SDV layer 2 Output

1 17 1 17
2 18 2 18
3 19 3 19
4 20 4 20
5 21 5 21
6 22 6 22
7 23 7 23
8 24 8 24
9 25 9 25
10 26 10 26
11 27 11 27
12 28 12 28
13 29 13 29
14 30 14 30
15 31 15 31
16 32 16 32

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Serial Digital Video 3 layer

SDV layer 1 Input SDV layer 1 Output

1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
7 7 7 7
8 8 8 8
9 9 9 9
10 10 10 10

SDV layer 2 Input SDV layer 2 Output

1 11 1 11
2 12 2 12
3 13 3 13
4 14 4 14
5 15 5 15
6 16 6 16
7 17 7 17
8 18 8 18
9 19 9 19
10 20 10 20

SDV layer 3 Input SDV layer 3 Output

1 21 1 21
2 22 2 22
3 23 3 23
4 24 4 24
5 25 5 25
6 26 6 26
7 27 7 27
8 28 8 28
9 29 9 29
10 30 10 30

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Serial Digital Video 4 layer

SDV layer 1 Input SDV layer 1 Output

1 1 1 1
2 2 2 2
3 3 3 3
4 4 4 4
5 5 5 5
6 6 6 6
7 7 7 7
8 8 8 8

SDV layer 2 Input SDV layer 2 Output

1 9 1 9
2 10 2 10
3 11 3 11
4 12 4 12
5 13 5 13
6 14 6 14
7 15 7 15
8 16 8 16

SDV layer 3 Input SDV layer 3 Output

1 17 1 17
2 18 2 18
3 19 3 19
4 20 4 20
5 21 5 21
6 22 6 22
7 23 7 23
8 24 8 24

SDV layer 4 Input SDV layer 4 Output

1 25 1 25
2 26 2 26
3 27 3 27
4 28 4 28
5 29 5 29
6 30 6 30
7 31 7 31
8 32 8 32

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5.3. Vertical interval trigger

The NTW-VD3232 router provides vertical interval switching. If vertical interval switching is desired you have to connect an
analog VIT reference signal to the VIT input. The NTW-VD3232 provides a looped VIT input. Please terminate the loop
with 75 Ohms if loop out put n ot i n use.

Switch 7 on the configuration switch SW A enables or disables the VIT sensing on t h e VIT input. If VIT switching is enabled
but a proper signa l is missing, the router will automat ically switch without VIT.

The VIT can be switched according to the following pattern:

- means switch down
* means switch up

Switch 7 VIT

- disabled
* enabled

Default is VIT en abled .

5.4. Power up mode

Switch 8 on the configuration switch SW A defines the power up mode. The NTW-VD3232 router provides two modes for
powering up the system.

Mode 1 switch es a l l out puts to in pu t 1 .
Mode 2 switches all outputs according to the buffered information in the routers processor system.

The power up reset can be switched according to the following patt ern :

- means switch down
* means switch up

Switch 8 Power Up Reset

- Mode 2
* Mode 1

Default is Mode 2.

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6. Connecting video signals to the NTW-VD3232

The NTW-VD3232 router offers standard 75 ohms BNC connectors for digital video in- and outputs. All digital video inputs
are termin ated with 75 ohm s .

7. Control and connection of Network systems, interf ace protocol

7.1. Important notes regarding the Network Control Protocol

7.1.1. Binary Code

The strings shown on the next pages are in binary coded format . Please be aware of the fact tha t any terminal program you
may use to contr ol a Network unit from a PC mu st be able to gener ate hexadecimal characters. ASCII ch aracters wi ll not be
accepted.

7.1.2. Acknowledge / Echo

A matrix will reply on a crosspoint set command with a n ECHO. In the case where a crosspoint is already set no ECHO will
be sent. If the matrix is part of a MIDI system two types of reply will be sent. Immediately after r eceiving the crosspoint set
comma nd the ECHO will be sent. The matrix will t hen wait for the command to pass the MIDI bus system. After receiving
the command from the MIDI bus system th e mat rix wil l send the comm and as an ACKNOWLE DGE.

7.1.3. RS-422 Matrixes

RS-422 Data Routers do not accept distribu tion of an input si gnal to several output s. An input s ignal ca n only be routed to
one single output. The Firmware of our RS-422 routers takes care of these limitations. If an input (Source) is already
connected to a particular output (Destination) any connection of this input to another output will disconnect the previous
connection. The router will in this case send the following message for the disconnected output: Output connected to input

128. Input 128 is an internal default for the disconnect status. Please see Network recommendations for use of RS-422 data
routers for further information.

7.1.4. Timeout

The Crosspoint Status Request mess age has a timeout, w hich means that you need t o wait 1 second in bet w een r e quest
messages.

7.2. Basic principles

Any message on any level (address) which conforms t o the standard arriving at eith er the MIDI or the RS232 port, will be re­sent on both MIDI and RS232. The only excepti ons a re:

a) A matrix which recognizes its address will not re-tr ansmit the message if the crosspoint is already set.
b) A matrix which recognizes its address will not re-transmit the message if the output number or input number

exceeds its size.

c) A unit (matrix or panel) will not re-transmit a message arriving at the MIDI if it was re-transmitted a short while

ago (typically 0.5 sec). This is done by grabbing a message storing it for the timeout period, and compar ing it with
new messages. After the timeout period the unit will grab a n ew message for compare. This is done to r emove
unwanted (read: unknown) messages from the MIDI ring.

d) A message arriving at the RS232 will always be re-transmitted unless it is a matrix, and one of the cases a) or b) is

fulfilled.

7.2.1. Example: A single unit with no MIDI connected

Messages s ent to th e RS232 of a s ing le unit will be returned once n o matt er what a ddress or input/output number the message
ha s , unless i t is a matrix which recognizes one of the con ditions a) or b) above.

7.2.2. Example: Several units connected by MIDI

Messages sent to the RS232 of a single unit will be returned once no matter what address or input/output number the message
has, unless it i s a ma trix whi c h r ecognizes one of the conditions a) or b) above.

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If none of the cases a) or b) is fulfilled the message will also be transmitted on the MIDI. Then if any unit on t h e MIDI ring
recognizes any of the cases a)/b) or c), the message will stop at that point. This means that the message will only be returned
once on th e RS23 2.
However, if n one of the un its on th e MIDI ring recognizes any of the cases a ) to c), the message will return to the ori gin ator
(the uni t whic h received the message on RS232). This unit will re-t ransmit the message once more on both MIDI and RS2 32.
The message is therefore returned a second time on RS232. This time one of the cases a) or c) is sure to be identified by one
of the units on the M IDI ring, and the me s s age is removed .
There is however one more special case: If several messages for unused addresses are transmitted with only little delay, one
might experience th at some m essages are returned several ti mes, as the store/compare/ remove function in case c) ca n only
handle a single message at the time. We therefore recommend that the user avoid sending messages to unused addresses.

7.3. RS232

The R S-232 port is used for extern al contr ol of Network units. The RS-232 port allows the customer to control the equipment
via Mirand a's i-Control PC p rogram or self-defined customized solutions.

Conn ect or for th e RS- 232 por t is a D S9 fem a le.
Pin 2 - Tx.
Pin 3 - Rx
Pin 5 - GND

A standard DCE (Data Communication Equipmen t) cable can be used for connection between PC and Network equipment.
The connection between the connectors is made one-t o- one.

Data-rate is 19200 baud/sec for all 32x32 units.
8 data-bit, 1 stop-bit, no parity.

7.4. MIDI

The MIDI bus is used for interconnection between several Network uni ts. Up to 50 routers and/ or control panels can be
linked together to form a routing system with many operational featur es.

The MIDI bus utilises a 5 mA cur rent loop with opto coupled por ts.
Standard connector is a 5pin DIN.

Standard MIDI cables can be used to interconnect several Network units.

Data-rate is 31.25 kbit/sec.
1 start-bit, 8 data-bit, no parity, 1 stop-bit. Logical 0 = cur rent ON.

7.5. Commands

7.5.1. Audio crosspoint set

Only for use wit h A udio rout er s.
Comma nd for sett i n g of cros sp oints:

1001nnnn 0kkk kkkk 0vvv vvvv

- nnnn is the matrix address from 0 up to 15.

- kkk kkkk is the output which shall be controlled.
kkk kkkk = output number
0 = output 1
127 = output 128

- vvv vvvv is th e input which shall be connected to the chosen output.
vvv vvvv = input number

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7.5.2. Video crosspoint set

Only for use with Video routers.
Comma nd for sett i n g of cros sp oints:

1010nnnn 0kkkkkkk 0vvvvvvv

- nnnn is the matrix address from 0 up to 15.

- kkk kkkk is the output which shall be controlled.
kkk kkkk = output number
0 = output 1
127 = output 128

- vvv vvvv is th e input which shall be connected to the chosen output.
vvv vvvv = input number

7.5.3. Crosspoint status request

Thi s com m an d is u sed for status r eques t on Aud i o an d Video r out er s .

1100nnnn 0xxxxxxx

- nnnn is the matrix address from 0 up to 15.

- xxxxxxx - do not carry any information

The requested router (Audio or Video) will send its crosspoint status on MIDI OUT and RS232. The same command format
as for crosspoint set is used.

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General Environmental Requirements for

Network Electronics Equipment

1. The equipment will me et the guaranteed performa nce specification under the following

environmental conditions:

Operating room temperature range 0°C to 45°C

•

Except of digital video routers 0°C to 40°C
Operating relative humidity range up to 90% (non-condensing)

•

2. The eq uipment will oper ate without damage under t he following environmental

conditions:

Temperature range -10°C to 55°C

•

Re lati ve humidity range up to 95% (non-condensing)

•

3. Elect romagnetic compa tibility conditions:

Emissions EN 55103-1 (Directive 89/336/EEC)

•

Immunity EN 55103-2 (Directive 89/336/EEC)

•

Electrical safety EN 60 950

•

With reference to the declaration of conformity provided with the external power supply.

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Network Electronics AS

Hinderveien 4, 3204 Sandefjord, Norway

Tel.: [phone] Fax: [phone] e-mail: support@ network group .no

De claration of Conformity with CE

This apparatus meets the requirements of EN 55103-1 (November 1996) with regard to
emissions, and EN 55103-2 (November 1996) with regard to immunity; it thereby complies
with the Elec tromagnet i c Co mpat ibility Directiv e 89/336/EEC.

Regarding electrical safety we refer to the declaration of conformity provided with the
external power supply.

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