Mars Titan CPU User manual

Titan CPU
Channel Multiplexer
CPU04 / CPU08 / CPU12
User Manual

2
Titan CPU Channel Mul plexer
Titan CPU User Manual v1.1
Publica on MNL 1057
October 2020
This informa on is furnished for installa on, opera on, test and maintenance purposes.
The informa on is proprietary in nature and should be treated accordingly. The data shall
not be released or used, duplicated or disclosed, in whole or in part, for manufacture or
procurement without the wri en permission of Mars Labs.
Proprietary No ce
This Technical Manual is copyright © 2020. All rights reserved. Brief excerpts may be
made from this manual for technical purposes, as long as they are referenced.
Although this manual is believed to be correct at the  me of publica on, Mars Labs, its
employees, or agents involved in the prepara on and publica on of this manual do not
accept any form of liability for its contents or any consequences arising from its use.
People using the informa on contained in this manual should apply, and rely upon, their
own skill and judgement to a par cular issue which they are considering.
Copyright
Mars Labs, LLC
29 C Street
Laurel, Maryland 20707
[phone]
www.marslabs.com

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Titan CPU Channel Mul plexer
Table of Contents
Furnished Accessories .......................................................................................
Support ............................................................................................................
General Guidelines ..........................................................................................
Introduc on
Opera on
Interface
Connec ons
Front Panel .......................................................................................................
Rear Panel ........................................................................................................
Connec on Diagram .......................................................................................
REM (Remote) ...............................................................................................
Titan Input Module Ports .................................................................................
......................................................................................................
4
4
5
6
8
9
10
11
12
Features & Specifi ca ons 15
Warranty & Repair ........................................................................................ 17
Changing the IP Address
LED Opera on ............................................................................................. 14
Notes & Known Issues ............................................................................... 18
Remote Switch Opera on ............................................................................ 14
Rese ng the CPU File Index .................................................................. 16
................................................................................. 13
.............................................................................

4
Titan CPU Channel Mul plexer - Introduc on
The Titan CPU Channel Mul plexers allows you to connect mul ple Titan
Pods or Mini-Recorders to easily confi gure large channel-count test systems
of up to 192 channels, plus digital channels.
Device connec ons to the Titan CPU are made using industry-standard
Ethernet cables, which provide communica on, power, and synchroniza on
on a single cable, simplifying wiring and elimina ng the need for extra
equipment. Data can be recorded directly to an SD memory card or to a host
PC, and network opera on is possible via TCP/IP or UDP.
This manual is intended to provide the user with an overview of the Titan
CPU Channel Mul plexer, with complete features, specifi ca ons, set up
procedures and opera on. It contains important safety informa on as well.
Support for this product is available by contac ng the factory during regular
business hours (9am – 6pm EST) at 301-470-3278. Addi onal informa on can
be found on our web site: h p://www.marslabs.com
Introduc on
Support
The Titan CPU is typically shipped with the following items:
- PS24V6A-SM - 24V / 6A Titan Power Adapter
- Ethernet cabling (CAT6/CAT5)
Furnished Accessories

5
Titan CPU Channel Mul plexer - Opera on
Electrosta c Discharge
Electrosta c Discharge (ESD) occurs when a sta c charge builds up on either
yourself or the Titan hardware, and then you touch the Titan hardware.
The sta c spark can be so small that you don’t feel it, however, it can fl aw a
semiconductor. These fl aws may generate an immediate failure, or, in most
cases, cause a slight reduc on in performance which will con nue to degrade,
eventually leading to failure of the hardware. When you feel a sta c shock, you
are experiencing a minimum of 3,000 volts of electricity.
Even though the input connectors have protec on to prevent ESD damage,
it is good prac ce to always ground yourself and the Titan hardware while
connec ng and removing sensors.
Always use approved ESD handling procedures to prevent ESD damage.
Grounding Titans
In general, grounding the Titan hardware to the test vehicle or test structure
will usually reduce noise pickup.
All of the analog inputs of the Titan hardware have a return path to ground.
However, it is very important that each sensor have only one return path to
avoid ground loops. When tes ng a vehicle, o en the vehicle chassis and Titan
can have very large ground imbalances of one or two volts. In such situa ons,
ground the sensors to Titan and use diff eren al inputs across the sensor. A
totally fl oa ng input (like a 9-Volt ba ery) must have one side grounded at the
point where used, either grounded to Titan or connected to the vehicle chassis
ground via a resistor (e.g. 10K ohm).
If there is a possibility that a fl oa ng sensor may be occasionally grounded,
install a 10K ohm resistor from the minus input to Titan ground. When the
sensor is fl oa ng, the 10K ohm resistance will reference it to Titan ground,
and when it is grounded, the resistor will allow the direct minus input wire to
reference the remote chassis ground.
Specifi c Warnings
Always connect the Titan Power Adapter to the Titan CPU before applying
power. Never hot plug a Titan CPU under any circumstances as hot plugging
may damage the device!
General Guidelines and Warnings

6
Titan CPU Channel Mul plexer - Opera on
Opera on
Front Panel
This user manual covers CPU04, CPU08, and CPU12 Channel Mul plexers.
Func onal descrip ons of all Titan CPU Channel Mul plexer front and rear
panels appear below.
The Titan CPU front panel incorporates a power connector and switch, LED
status indicators, an Ethernet port, a Programming (PGM) port, and a jack for
remote opera on (REM). The CPU08 and CPU12 include four RJ-45 Input Module
connectors (ports 1-4) with LED group indicators.
CPU04 Front Panel
CPU08 and CPU12 Front Panel

7
Titan CPU Channel Mul plexer - Opera on
LED Status Indicators
R – A red LED indica ng the recording status.
S – A green LED indica ng that the Titan CPU is scanning.
E – A red LED indica ng an error condi on within the Titan CPU.
P – A green LED indica ng that the Titan CPU is ON.
ETHERNET
An RJ-45 port that enables the Titan CPU to operate over an Ethernet
network, or to connect to a PC using an Ethernet crossover cable.
Panel Components
REM
An 1/8” TRS connec on that permits remote Start/Stop recording.
POWER The 4-pin power connector provides the power input of the
Titan CPU Channel Mul plexer.
NOTE: The 24V, 6-amp Power Adapter furnished
with the Titan CPU is sufficient to power the CPU and
approximately eight Input Modules with no excitation.
If using the CPU12 with more than eight modules
connected, or if excitation is to be applied, you will
need to provide additional power either by powering
some Input Modules separately with additional
Titan power adapters or by providing power from
another source. In the latter case, observe the power
connection shown.
For all test configurations, Mars Labs recommends
powering input modules separately to avoid potential
power issues.
PGM
A mini-USB port for communica ng with the device internal processor.
LED Port Indicators (CPU08/CPU12)
Green (P) - When lit, indicates that a four-port group is powered and ac ve.
Red (U) - When lit, indicates that a four-port group is providing power to the
RJ45 ports.

8
Titan CPU Channel Mul plexer - Opera on
Rear Panel
The rear panel on all three Titan CPUs incorporate RJ-45 Input Module
connectors, LED indicators for each four-port group, and a Sync jack.
CPU04 Rear Panel
CPU08 Rear Panel
CPU12 Rear Panel

9
Titan CPU Channel Mul plexer - Opera on
Titan Input Module Ports
Mul ple RJ-45 style ports provide the connec ons for Titan Input Modules.
Any combina on of Titan Mini-Recorders and Pods can be connected to these
ports to provide up to 192 analog channels plus digital channels (CPU12).
Connec ons are made using Ethernet CAT6 cables.
Rear Panel Components
Connec on Diagram
The diagram below depicts a large channel-count data acquisi on system
(192 analog channels, plus digital channels) using a Titan CPU12 and twelve
Titan Input Modules*, one of which includes a Digital Pod. Connec ons
between the CPU and the Titan Input Modules are made using standard
‘straight-through’ CAT6 Ethernet cables. The maximum recommended cable
length from the Mini-Recorder to the CPU is 25 feet (7.6 meters).
SYNC
An 1/8” Tip-Ring-Sleeve (TRS) connec on that allows mul ple CPUs
to be synchronized for large channel-count confi gura ons using a
Titan CPX Expander.
LED Port Indicators
Green (P) - When lit, indicates that a four-port group is powered and ac ve.
Red (U) - When lit, indicates that a four-port group is providing power to the
RJ45 ports.
* When more than eight Titan Input Modules are connected and powered from
the CPU, you will need to provide separate power to the addi onal modules.
See power note on page 7.

10
Titan CPU Channel Mul plexer - Interface
Interface
REM (Remote):
The REM jack permits the Titan CPU recording func on to be started and
stopped by means of an external switch. This func on is implemented on
an 1/8” Tip-Ring-Sleeve (TRS) jack, which provides connec ons for both an
external switch and an LED to indicate the START/STOP status:
Tip - External Switch
Ring - LED
Sleeve - Ground
The CPU will start recording when a switch closure is made between the Tip
and Sleeve contacts. When the switch is in the open posi on, recording will
stop. If an LED is connected between the Ring and Sleeve contacts, it will be
illuminated when the CPU is recording.
Titan Input Module Ports
The Titan CPU has twelve iden cal Titan Input
Module Port connectors. LEDs integrated into
these connectors indicate when a connected
Titan Input Module is transmi ng and receiving
data. Titan Input Modules connect to these
ports using industry-standard ‘straight-through’
Ethernet cabling, which provides power, sync and
data connec ons on a single cable. The maximum
recommended cable length from the Titan CPU to
a Titan Input Module is 25’.
NOTE: When the Remote Switch is ON (i.e. recording) the Remote LED will blink
mostly ON. When the Remote Switch is OFF the Remote LED will blink mostly OFF.
The Remote Switch may be connected at any time. If the Remote Switch is ON when
the connection is made, the CPU will begin recording immediately with the current test
configuration.