TDT RS4 Guide d'application

RS4 Data Streamer

Hardware Reference

Updated 2022-05-25

Tucker-Davis Technologies

11930 Research Circle

Alachua, FL 32615 USA

Phone: +1.386.462.9622

Fax: +1.386.462.5365

Notices

The information contained in this document is provided "as is," and is subject to being changed,

without notice. TDT shall not be liable for errors or damages in connection with the furnishing, use, or

performance of this document or of any information contained herein.

The latest versions of TDT documents are always online at https://www.tdt.com/docs/

RS4 Data Streamer | 2

Table of Contents

RS4 Data Streamer

4Before You Begin

5RS4 Overview

5Power and Communication

6Data Transfer Rate

6File System Check

6Hardware Requirements

8Conguring the RS4

8Storage Array Types

9Network Access

12Synapse Setup

15RS4 Options

16Recording Sessions

17Accessing RS4 Storage

17WinSCP Setup

19RS4 Storage Format

20Naming Convention

22LCD Touch Screen

22Ports Tab

25Storage Tab

26Status Tab

29Cong Tab

31Troubleshooting

36RS4 Technical Specications

36RS4 Important Changes

Table of Contents | 3

RS4 Data Streamer

Before You Begin

The RS4 rmware version is shown at the top center of the Ports tab on the touchscreen

interface. TDT periodically releases rmware updates for the RS4. These are installed by

connecting the RS4 to the Internet and pressing the Update Firmware button on the Cong

Tab. This connects the RS4 to the TDT web server to download and apply the update. Note that

each update is incremental and you may need to perform the update process several times

until the RS4 is up to date.

Recent critical rmware updates include:

v1.22 / v2.7: added SFTP server for safer data transfer (see Accessing RS4 Storage)

v2.9 / v3.1: added improved gap logging

The latest rmware version depends on the rst number of your RS4 rmware version.

See the RS4 Important Changes for more a more detailed version history.

•

RS4 Version Latest Firmware Version

1.x v1.22

2.x v2.9

3.x v3.1

RS4 Data Streamer | 4

RS4 Overview

The RS4 Data Streamer is a high performance data storage array designed to save data directly

from an RZ processor, without going through Synapse. This improves real-time performance

and allows you to acquire continuous data over several days or weeks. The RS4 storage array

is accessed over a network connection or to a USB storage device.

The RS4 can stream up to 1024 16-bit channels at rates up to ~25 kHz and fewer channels at

rates up to ~50 kHz. Streamed data is stored as individual channels and can be stored in

different numeric formats (16-bit integer, 32-bit oat). Stored data can be easily reincorporated

into the TTank data tank format for post processing, or processed on its own. The RS4 is

available with either one or four streaming ports and four or eight terabytes (TB) of storage.

Power and Communication

The RS4 has an integrated switched-mode power supply that auto-detects your region's voltage

setting. A switch on the back panel of the RS4 enables/disables the power supply.

The power button is located on the bottom right of the front panel of the RS4. Press it briey to

power on or initiate the shutdown.

The RS4 receives data through it's ber optic ports located on the back panel of the device.

This connects to a special DSP that installs in the RZ processor. These ports are color coded

for correct wiring. See Hardware Requirements for setup information.

The RS4 has a touch screen interface for status displays and conguration options.

The front panel device status LEDs report hard drive and network activity.

Only

power

the

RS4

down

during

Idle

state.

Idle

status

can

checked

the

Ports

tab.

Failure

power

down

during

Idle

status

may

result

the

RS4

performing

le

system

check

during

the

boot

process

and

possible

data loss.

Important

the

RS4

becomes

unresponsive

and

fails

shutdown

normally,

you

can

shut

the

device

down

holding

the

power

button

for

longer

than

ve

seconds.

This

will

force

the

device

shutdown.

After

forced

shutdown,

the

RS4 may perform a le system check.

Note

RS4 Data Streamer | 5

Data Transfer Rate

The maximum data rate for each RS4 streaming port is 12.5 MB/s. This equates to streaming

256 channels of 16-bit integers at a sampling rate of ~25 kHz per streaming port, or 128

channels of 32-bit oats. With four ports available, up to 1024 channels of 16-bit integers can

be streamed to the RS4.

File System Check

Occasionally the RS4 will perform a le system check during the boot process. This is to

ensure the integrity of the storage array and le system. You can view the progress of the le

system check in the Status Tab.

Hardware Requirements

Basic setup for the RS4 Data Streamer includes connection to one or more RZ processors via

the orange ber optic cable. Connect the RZ2 as illustrated in the following diagram.

When

recording

data

important

compare

the

data

rate

calculated

Synapse

the

actual

data

rate

reported

the

RS4.

the

reported

data

rate

the

RS4

not

similar

the

calculated

data

rate

the

macro,

this

may indicate a hardware problem. If so, contact TDT.

Note

The more les present on the storage array, the longer the le system check will take.

Note

Make

sure

that

all

cables

are

connected

before

powering

the

RS4.

Make

sure

the

RS4

turned

last

after

the RZ processor.

Important

RS4 Data Streamer | 6

RS4 to RZ2 Connection Diagram

In the diagram above, a single RZ2 provides one streaming input to the RS4. For four port

RS4-4 devices, the RZ may have multiple optical DSPs connected to the RS4 in order to stream

even higher channel counts, or additional RZ devices can be connected to the same RS4

provided it has vacant streaming ports (B, C, or D) available. The RZ2 is also connected to a

preamplier and PC. The ber optic cables are color coded to prevent wiring errors.

A network connection is not required but is strongly recommended for both controlling data le

naming from Synapse and for accessing stored data quickly.

RS4 PC and Network Connection Diagram

RS4 Data Streamer | 7

The diagram above illustrates possible connections from the RS4 to a PC (1) or network (2).

Connect the Ethernet cable to the RS4 port labeled Network.

Conguring the RS4

Storage Array Types

The hard drives in the RS4 can be congured in one of two RAID based storage array types

Striped or Mirrored. A full disk reformat, including loss of data, is required when switching

between the types. Each type has advantages and disadvantages and is suited for particular

situations. The RS4 is formatted as a Mirrored array by default since this reformatting takes

much longer (several hours).

Striped

Striped array types offer quick reformatting (several minutes), ecient data storage, and

performs streaming tasks at the maximum transfer rate. This type does NOT protect against

data drive failures and loss of a data drive will result in loss of data. This format is useful for

those who wish to stream large amounts of data and are regularly backing up the data.

Mirrored

Mirrored array types duplicate the data across your available drives. This prevents data loss if

any single drive fails. This reduces total available storage space by half. For older RS4s that

use HDD drives, using Mirrored array may result in slower transfer speeds.

Mirrored arrays will prevent data loss if any single drive fails. RS4 devices that contain four

data drives, in some cases, are protected if two of the four data drives fail.

The array will resync the drives periodically to ensure the copies are identical. The Array Status

displays 'Resyncing' in the Status Tab. Do not attempt to save data to the RS4 while resyncing

is occurring.

the

resyncing

process

interrupted

loss

power

shutdown

the

system,

will

resume

where

left

off prior to the interruption.

Note

RS4 Data Streamer | 8

Reformatting the RS4 Storage Array

To reformat the RS4 storage array:

Press the Congtab on the RS4 interface.

Press the Reformat Array button.

Press the desired array type or press Cancel to exit.

Network Access

The RS4 needs network access to the host computer for retrieving data after the recording and

also so Synapse software can tell the RS4 how to name its les during the recording so they

can be matched up later.

By default, the RS4 is set to dynamically receive an IP address from the DHCP server on the

network it is connected to. If no DHCP server responds, the device falls back on Manual mode

with the following default static IP conguration:

You can congure the IP address manually through the touchscreen interface. See Manual

Conguration on the Status Tab.

There are two methods for networking to the RS4:

Directly connecting to a PC

Connection to a local area network

Direct Connection to a PC

Direct connection to a PC allows data on the RS4 to be viewed and modied through the

standard Microsoft Windows le sharing protocol.

IP Address Netmask

10.1.0.42 255.255.255.0

•

When using a Static IP, the RS4 Current IP must be set to "Congure Manually" using the touch screen interface.

Important

RS4 Data Streamer | 9

To enable manual conguration:

Touch the Status Tab and then touch the Current IP eld. This display the Network

Conguration window.

Touch the Congure Manually check box and click OK to accept the default value.

Using Windows 10

To access the RS4 le system through a PC, running Windows 10:

You will have to congure the PC TCP/IP settings. Open Control Panel, then Network and

Sharing Center, then Change adapter settings.

Double-click the desired connection (this is usually a Local Area Connection or Ethernet).

In the status dialog, click the Properties button.

In the item list, select Internet Protocol (TCP/IP) or if there are multiples, select Internet

Protocol (TCP/IPv4).

Click the Properties button.

Select Use the following IP address and enter these values:

IP address: 10.1.0.x; where x can be any value, 1 to 254 except 42

Subnet mask: 255.255.255.0

Default gateway: Leave empty

RS4 Data Streamer | 10

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