Curtiss-Wright SSR/CHS/001 User manual

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24 Nov. 2020 | DST/AE/022 SSR/CHS/001/D
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SSR/CHS/001
Ethernet multi-role recorder (CompactFlash®, voice connector) - 4
user-slots
Key Features
•Rugged CompactFlash-based 100BaseTX
Ethernet recorder
•Built in GPS, digital IRIG-B, PTPv1 and PTPv2
synchronization including Grandmaster
•Battery-backed up time
•Operating range of -40 to 85
o
C
•Up to 40 Mbps logging speed
•Fat 32 file system
•Four user slots for plug-in modules
Applications
•Data logging and/or muxing
Overview
SSR-500s are compact, lightweight, rugged recorders with integrated
data acquisition. The SSR/CHS/001 is an SSR-500 chassis for which a
range of plug-in modules is available, providing interfaces such as A/D
conversion, avionic bus monitoring, and video compression. Built-in
inputs include audio and IRIG-B/GPS. A rear panel Ethernet port is
provided for setup and real-time monitoring. Control is via a START/STOP
switch and an EVENT button, via external start/stop and event inputs
through the I/O connector, or SNMP commands through the Ethernet link.
Data is stored on a removable CompactFlash memory card, currently with
capacities of up to 128 GB industrial grade. A PC identifies such
removable storage as a FAT32 drive so files are instantly accessible with
no need for additional conversion software. Files are in the popular PCAP
format and are readable by the GS Works 9 display and analysis package,
as well as other third party software products.
The front panel is designed to be user-friendly with a clean and simple
layout. The setup software, DAS Studio 3, is streamlined for fast
configuration, with minimal time required before the system is ready to
record.
Figure 1: Block diagram for the SSR/CHS/001

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SSR/CHS/001
Specifications
All values provided in the following specification tables are valid within the operating temperature range specified under
“Environmental ratings” in the “General specifications” table.
TABLE 1 General specifications
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
User slots – – 4 –
Dimensions Design metric is millimeters.
height – 85 – mm
height – 3.34 – in.
length – 163 – mm Measurement of main body, not including the front panel
switch and back panel connectors.
length – 6.41 – in.
width – 127 – mm Measurement of main body, not including flanges.
width – 4.9 – in.
Unit power supply
28V – 300 – mA
total power – 8.4 – W See “Understanding power consumption in the
SSR/CHS/001” on page 18.
Mass Design metric is kilograms.
fully populated
(without CompactFlash card)
– 1.91 – kg Typical module weight of 75g.
fully populated
(without CompactFlash card)
–4.2– lb
fully populated
(with CompactFlash card)
–1.94– kg
fully populated
(with CompactFlash card)
–4.27– lb
Environmental ratings See Environmental Qualification Handbook for Network Switch and Recorder
Products.
operating temperature -40 – 85 °C Chassis base/side plate temperature.
storage temperature -40 – 85 °C
LCD operating range -30 – 70 °C For more information, see “Front panel display” on page 18.
Logging speed – – 40 Mbps Subject to CF card and frame length (see the CompactFlash
cards data sheet).
Mounting screws – 6 – – Quarter-turn Dzus panel-mount screws.
Finish Electroless nickel-plated.
base, side and end plates – – – – Painted black GRIGIO SCURO OPACO C604.
TABLE 2 Active antenna inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 1 –
Bias voltage 5.15 – 5.35 V
Bias current – – 50 mA
Signal strength -138 – – dBm
Antenna gain 10 26 50 dB

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SSR/CHS/001
Figure 2: SSR/CHS/001 mechanical drawing (mounting brackets must be ordered separately)
85,00 127,00
143,00
29,70
50,80
50,80
31,70
153,00
163,00
4,00
9,50
9,50
14,00
28,50
28,50
14,00
127,00
146,00
159,00
85,00
9-way connector
10-way micro-miniature connector
19-way micro-miniature connector
6-way bayonnet power connector
GPS Antenna Connector
GroundMountingBolt
Drill&Taptosuit10-24UNC.
Torque(Max):.5Nm(Lbfin)
LED (2 OFF)
Mounting Bracket
(6 OFF)
1/4 Turn Dzus Fastener
(6 OFF)
Nylon Battery Mount

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SSR/CHS/001
TABLE 3 Electrical specifications
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Input range 18 28 40 V 2A max. therefore 36W at 18V supply.
Reverse polarity protection -40 – – V
Current available
+5V 0 – 2,400 mA
±7V 0 – 2,000 mA Combined load on both supplies must not exceed 15W.
±12 0 – 1,250 mA Combined load on both supplies must not exceed 15W.
Short circuit duration
+5V ∞ – – s Indefinite to GND.
±7V ∞ – – s
±12 ∞ – – s
Glitch immunity – 20 – ms Typical glitch immunity at 28V.
Efficiency – 75 – % At full load.
Physical
connector – – – – Bayonet connector.
placement – – – – Not removable.
TABLE 4 Onboard GPS receiver
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 1 –
Time accuracy – – 1 μs
Position accuracy
2D fix 2.5 – 22 m Circular Error Probable.
3D fix 2.5 – 22 m Spherical Error Probable.
3D fix 2 – – m With Satellite-Based Augmentation Systems.
Satellite acquisition time
reacquisition 3.5 5 – s
warm power-up – 40 – s
cold power-up – 60 – s Test carried out with a minimum of four satellites in use.
GPS update rate – 1 – Hz
Navigation datum – – – – World Geodetic System-84 (WGS-84).
Restrictions Coordinating Committee for Multilateral Export Controls
(COCOM) restrictions apply.
velocity – – 1,854 kph
velocity – – 1,000 knots
altitude – – 18,000 m
altitude – – 60,000 ft

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SSR/CHS/001
TABLE 5 PTP Synchronization specification
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Time accuracy Measured over the full temperature range with temperature
changing at up to 1°C per minute.
mean error – 10 40 ns Mean of PPS errors calculated over ±60 seconds from any
reading.
instantaneous error – 20 250 ns After synchronization is achieved, with no loss of connection
to Grandmaster.
Time to synchronize Measured from a power-up of the test chassis, using a
Meinberg M600 IEEE 1588 Grandmaster, supplying PTPv1
messages to the SSR/CHS/001 via OnTime T208 switch,
configured in IEEE 1588 transparent mode.
1 μs – 50 – s
250 ns – 75 – s
TABLE 6 PTP grandmaster
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Grandmaster accuracy
digital IRIG -2 – 2 μs
GPS -2 – 2 μs Error relative to precise reference clock, GPS signal from
antenna which has a clear view of the sky.
PTP address
IP address – 224.0.0.
129,
224.0.0.
107
– – PTP, UDP port numbers are 319 and 320. PTPv2 in P2P
mode uses additional IP address (224.0.0.107) for delay
measurement.
PTP sync interval
1588v1 – 2 – s Sync interval when operating as a PTPv1 Grandmaster, or
when connected to an external PTPv1 Grandmaster.
1588v2 – 1 – s Sync interval when operating as a PTPv2 Grandmaster, or
when connected to an external PTPv2 Grandmaster.
TABLE 7 Differential ended audio inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 2 –
Sampling rate
VOICE[1:0] – 64 – ksps

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Input voltage
operating range (Gp = 1) -30 – 8 dB Primary gain = 1; 0 dB = 489 mV.
overvoltage protection -40 – 40 V Voltages outside of this range can damage input.
Analog filter
BandPass 3 – 3,400 Hz
Input resistance
between inputs – 135 – kΩ Module powered off.
between inputs – 1 – MΩ Module powered on.
each input to GND – 27 – kΩ Module powered off.
each input to GND – 300 – kΩ Module powered on.
TABLE 8 Ethernet interface
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs/outputs – – 1 – IEEE 802.3 compatible; 100BaseTX only.
Physical
connector – – – – Micro-miniature, circular connector.
placement – – – – Not removable.
TABLE 9 RS-485 inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 1 –
Signalling rate
DIGITAL_TIME_IN – – 100 bps Operating as IRIG-B input, the following time codes are
supported: IRIG-B 000, 001, 002, 003.
Input voltage
operating range 0 – 5.25 V
logic 0 0 – 0.7 V
logic 1 2 – 5.25 V
overvoltage protection -0.3 – 6 V Voltage in excess of these values can damage input.
Signalling currents
logic 0 – -0.2 -0.5 mA
logic 1 – 2 5 mA
Input resistance
each input to GND – 27 – MΩ Module powered on.
each input to GND – 53 – kΩ Module powered off.
Time error
offset – – 2.5 μs Over full operating temperature range. When configured as
primary (TTL_IRIG) input range.
TABLE 7 Differential ended audio inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS

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TABLE 10 Battery-backed real-time clock
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Drift Determined by the temperature compensated crystal
oscillator (TCXO) in controller.
on – – 3 ppm
off – – 100 ppm
Battery duration – – 4 years Expiry date is labeled on battery mount.
TABLE 11 RS-422 inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 2 –
Signaling rate
START_STOP+ – – 0.5 Hz When START_STOP is logic 1, packets are recorded; when
logic 0, no packets are recorded.
START_STOP- – – 0.5 Hz
EVENT+ – – 0.5 Hz Event is triggered when signal changes from logic 1 to logic 0
or from logic 0 to logic 1.
EVENT- – – 0.5 Hz
Input voltage
operating range -7 – 12 V Do not exceed operating range.
logic 0 – – -0.2 V VIN+ - VIN-.
logic 1 0.2 – – V VIN+ - VIN-.
overvoltage protection -27 – 27 V Voltages outside of this range can damage input.
ESD protection -15 – 15 kV Human Body Model.
Input resistance
between inputs – 120 – Ω Module powered on.
between inputs – 120 – Ω Module powered off.
each input to GND – 300 – kΩ Module powered on.
each input to GND – 80 – kΩ Module powered off.
TABLE 12 RS-422 outputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Outputs – – 1 –
Signaling rate
PPS+ – – 1 Hz
PPS- – – 1 Hz Pulse per second output.

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SSR/CHS/001
Output voltage
operating voltage -7 – 12 V Absolute voltage of the operating signal must stay within this
range.
logic 0 – – -2 V V0+ - V0- ; RLOAD = 100Ω.
logic 1 2 – – V V0+ - V0- ; RLOAD = 100Ω.
short circuit current – – 250 mA
short circuit duration ∞ – – s Only one output may be shorted at a time.
ESD protection -15 – 15 kV Human Body Model.
Output resistance – 1.5 – kΩ
TABLE 13 BTTL outputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Outputs – – 1 –
Signaling rate
REC_STATUS – – 1 Hz Recorder status; high indicates an error condition. Mirrors
the Error LED.
Output voltage
logic 0 – – 0.44 V Sinking 24 mA.
logic 1 3.76 – – V Sourcing 24 mA.
short circuit current – – 50 mA
short circuit duration ∞ – – s To GND.
Output resistance – 121 – Ω
TABLE 14 Brightness control inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 1 –
Input voltage
BRIGHT/DIM± -10 0 10 V DC level controls the brightness of the front panel. Range of
0 to 100% brightness is controlled by an SNMP command.
Isolation voltage – – 1,000 V
Input resistance
LAMP(0) to LAMP(1) 2.3 2.8 3.3 kΩ
TABLE 12 RS-422 outputs (continued)
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS

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SSR/CHS/001
Setting up the SSR/CHS/001
All module setup can be defined in XML using XidML® schemas (see http://www.xidml.org).
Instrument settings
SETUP DATA CHOICE DEFAULT NOTES
Manufacturer - - -
Name ACRA CONTROL ACRA CONTROL Name of manufacturer.
PartReference SSR/CHS/001/D SSR/CHS/001/D The instrument part reference.
SerialNumber AAA1234 AAA1234 Unique name for each module.
Settings - - -
Is Leap Year False
True False Specifies if the current year is a leap year.
IP Address 0.0.0.0 to 255.255.255.255 192.168.28.1
Specifies the IP Address of the instrument. This set-
ting cannot be changed directly on the instrument,
but its value is needed so that the instrument can be
programmed.
IENA Only System True
False False
This setting is used to generate consistent packet
timestamps. Set to True when the system uses IENA
timestamps only.
Primary Input
IRIGB
GPS
PTP
IRIGB Selects which time source PTP, GPS or IRIG-B has
priority.
Allow Secondary Input True
False True
If Primary Input is GPS/IRIG-B then allow IRIG-
B/GPS to act as secondary time source, when pri-
mary is unavailable.
Settings
PTP --
Settings relating to PTP synchronization and time
conversions.
PTP Protocol PTPv2 Delay Req
PTPv1 PTPv2 Delay Req
Determines supported IEEE 1588 protocol (PTP)
where PTPv1 corresponds to IEEE 1588-2004 and
PTPv2 corresponds to IEEE Std 1588-2008.
PTP Grandmaster True
False False Determines whether the module acts as a PTP
Grandmaster.
PTP Leap Seconds 0 to 256 37 Current leap second count. Offset between PTP time
and UTC time.
Synchronisation Level 500 to 10000 500
The unit considers itself in sync if the last calculated
offset from its time master is less than this. Units are
nanoseconds.
Settings
PTPv1 ---
PTPv1 Subdomain
_DFLT
_ALT1
_ALT2
_ALT3
_DFLT Name of the PTPv1 subdomain to use.
PTPv1 Sync Interval 1
22Interval, in seconds, between sync messages, if the
module is operating as a PTPv1 Grandmaster.
PTPv1 Preferred Grandmaster True
False True Indicates whether the SSR/CHS/001 is a preferred
PTP Grandmaster.
Settings
PTPv2 ---
PTPv2 Subdomain 0 to 255 0 The PTPv2 subdomain to use.

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SSR/CHS/001
PTPv2 Announce Interval
1
2
4
8
16
2Interval, in seconds, between announce messages, if
the module is operating as a PTPv2 Grandmaster
PTPv2 Sync Interval
0.5
1.0
2.0
1.0 Interval, in seconds, between sync messages, if the
module is operating as a PTPv2 Grandmaster.
PTPv2 Priority 0 to 255 128
Set the relative priority of the master, 0: highest prior-
ity, 255: lowest priority, used by the best master
clock algorithm for PTPv2, IEEE Std 1588-2008,
#9.3.4.
Settings
IRIG-B-In - - Settings on the IRIG-B input
Current Year 2010 to 2100 2019 Indicates the current year.
Settings
Recorder - - Settings used by PCAP recorders
Wrap Around True
False False
In normal mode, recording stops when the disk is full.
If Wrap Around is enabled, the oldest file is deleted
and recording continues.
Recorder Control Method
Local
Network
External
Local
Selects whether the recorder is controlled from its
Local front panel, via SNMP over the Network, or by
External I/O lines.
Memory Utilization Threshold 0 to 10000000 12800
Sets the number of megabytes of remaining disc
space, at which the recorder display will start blink-
ing to indicate that memory is low. A value of 0 dis-
ables the warning.
Record from Ethernet True
False True Enables/disables the Ethernet-in recording without
affecting recording from the internal chassis
Store Ethernet Frame CRC True
False False
Determines whether the Ethernet packet frame check
CRC is included in the PCAP file as if it were data
bytes in the packet.
Settings
Brightness - - Control of the brightness of the display on the unit.
SETUP DATA CHOICE DEFAULT NOTES