Curtiss-Wright SAM/DEC/008 User manual
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SAM/DEC/008
Ethernet based USB powered PCM decommutator
Features
•IRIG-106 Ch. 4 compliant PCM decommutator
•USB 2.0 Type II compatible, no additional
power source required
•1Mbps programming link to Acra KAM-500
systems over X-PROG
•Choice of three PCM codes: BIØ-L, NRZ-L, or
RNRZ-L-15
•Choice of RS-422 or TTL inputs
•Accepts PCM streams up to 10Mbps (8Mbps
BIØ-L)
•80 to 65,536 bits (including parity bits) per
minor frame
Applications
•PCM decoding
•
Programming legacy systems based on X-PROG
Overview
The SAM/DEC/008 decommutates IRIG-106 Ch.4 PCM streams and
provides a high-speed programming link for Acra KAM-500 systems. The
unit uses a single USB 2.0 connection in the ground station/programming
PC.
The PCM decommutator accepts either differential ended RS-422 inputs
or single ended TTL inputs. With BIØ-L codes only a single input is used.
For other line codes, an additional data clock (DCLK) line is required. Any
sync word up to 32 bits can be used to identify the start of a minor frame
(including mask and alternating patterns). The SAM/DEC/008 can be
configured with GS Works 8 or with custom APIs similar to those used
with the SAM/DEC/007.
The programming link can be used to program multiple Acra KAM-500s. A
bi-directional, differential ended (RS-422) pair of data lines (X-PROG) is
used to transmit or receive data at 1Mbps.
Figure 1: Programming link and differential ended PCM inputs
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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
Slots – – 1 – USB 2.0 compatible. Can be connected to any USB 2.0 port.
Mass
–155 – g
–5.47 –oz Design metric is grams.
Power consumption
+5V –500 –mA From USB port.
total power –2.5 – W
Environmental ratings See Environmental Qualification Handbook.
operating temperature 0 – 60 °C Chassis base/side plate temperature.
storage temperature -20 –70 °C
TABLE 2 BTTL inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 2 –
Signaling rate
DATA – – 10 Mbps
DCLK – – 10 MHz
Input voltage
operating range 0 – 5.5 V
logic 0 – – 0.8 V
logic 1 2 – – V
overvoltage protection 0 – 5.5 VVoltages outside of this range can damage input.
Input resistance
each input to GND –27 –MΩ Module powered on.
each input to GND –53 –kΩ Module powered off.
TABLE 3 RS-422 inputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Inputs – – 2 –
Signaling rate
DATA – – 10 Mbps
DCLK – – 10 MHz
Input voltage
operating range -7 –12 VDo not exceed operating range.
logic 0 – – 0.2 V VIN+ - VIN-.
logic 1 0.2 – – V VIN+ - VIN-.
common mode voltage -7 –12 V
overvoltage protection -7 –12 VVoltages outside of this range can damage input.
ESD protection -8 – 8 kV Human Body Model.
Input resistance
between inputs –120 – Ω Module powered on and inputs terminated.
between inputs –120 – Ω Module powered off and inputs terminated.
each input to GND –20 –MΩ Module powered on.
each input to GND –60 –kΩ Module powered off.
TABLE 4 RS-422 outputs
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Outputs – – 1 –
Signaling rate
PROG_DCLK – 1 – MHz
Output voltage
absolute operating range -0.3 – 6 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.
common mode voltage -7 –12 V
short circuit current – – 150 mA
short circuit duration ∞ – – s Only one output may be shorted at a time.
ESD protection -15 –15 kV Human Body Model.
Output resistance –120 – Ω
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TABLE 5 RS-485
PARAMETER MIN. TYP. MAX. UNITS CONDITION/DETAILS
Channels – – 1 –
Signaling rate
X-PROG – – 1 Mbps
Input voltage
operating range -7 –12 V
logic 0 – – 0.2 V VIN+ - VIN-.
logic 1 0.2 – – V VIN+ - VIN-.
common mode voltage -7 –12 V
overvoltage protection -7 –12 VVoltages outside of this range can damage input.
ESD protection -15 –15 kV Human Body Model.
Output voltage
operating range -7 –12 V
logic 0 – – -2 V V0+ - V0- ; RLOAD = 100Ω.
logic 1 2 – – V V0+ - V0- ; RLOAD = 100Ω.
common mode voltage -7 –12 V
short circuit current – – 250 mA
short circuit duration ∞ – – s Only one output may be shorted at a time.
Input resistance
between inputs –120 – Ω Module powered on and inputs terminated.
between inputs –120 – Ω Module powered off and inputs terminated.
each input to GND –20 –MΩ Module powered on.
each input to GND –60 –kΩ Module powered off.
Output resistance –120 – Ω
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Setting up the SAM/DEC/008
Input type: Differential ended (RS-422) or single ended (TTL)
Code: BIØ-L or NRZ-L, RNRZ-L-15 and DCLK and polarity (true/false)
Bit-rate: BIØ-L (1,000bps to 8Mbps) and NRZ-L, RNRZ-L-15 and DCLK (350bps to 10Mbps).
Word definition: Data bits per word (4 to 16), Orientation (MSB first/last), Parity (Odd/even/none)
Syncword: 32 bits, plus mask, plus lock on true and inverse
Getting the most from the SAM/DEC/008
The SAM/DEC/008 is designed as an Ethernet-based device and is connected to a PC through a USB-to-Ethernet controller. It
can be connected to a USB 2.0 port on any PC or laptop.
NOTE: In the event your USB port does not supply enough power, you may need to use an externally powered USB hub to con-
nect the SAM/DEC/008.
Software such as DAS Studio 3 or KSM-500 configures an extra network connection during programming of an Acra KAM-500
chassis.
You must ground any RS-422 signals that are the source of the PCM stream or you must ground the Acra KAM-500 that is being
programmed. This ensures the RS-422 signals do not float with respect to the SAM/DEC/008. For details on grounding, see
TEC/NOT/063 - Grounding and shielding of the Acra KAM-500.
NOTE: Even though the SAM/DEC/008 supports 10 Mbps in NRL-L (RNZL-15), the decommutation software and/or the PC
specifications may degrade this performance.
Drivers installation
The SAM/DEC/008 is detected by the operating system as a LAN9500 USB-to-Ethernet controller, and by default, drivers are
automatically installed. However, depending on the operating system or security settings, drivers may need to be manually
installed. In this case the drivers can be downloaded from the following website:
http://www.microchip.com/SWLibraryWeb/producttc.aspx?product=OBJ-LAN95xx-WINDOWS
IP address considerations
Once installed, the hardware is displayed in Network Connections as a new network connection: LAN9500A USB2.0 to Ethernet
10/100 adapter (LAN9500A adapter).
The IP address of the LAN9500A adapter incremented by 1, is automatically assigned to the SAM/DEC/008. To prevent these IP
addresses from changing, ensure the LAN9500A adapter uses a static IP address. If it uses a dynamic (DHCP) IP address, its IP
address may change when the PC is restarted. This in turn would change the IP address of the SAM/DEC/008, and could cause
a network conflict.
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Refer to the following to ensure the LAN9500A adapter has a static IP address:
1. Go to Control Panel -> Network and Internet -> Network and Sharing Center.
2. Click Change adapter settings.
3. Right-click Local Area Connection (LAN9500A USB2.0 to Ethernet) and then click Properties.
4. In the Local Area Connection 8 Status dialog, click Properties.
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5. Select Internet Protocol Version 4 (TCP/IPv4) and then click Properties.
6. Click the Use the following IP address radio button and then type the IP address you want.
For example, if you use the IP address shown above, then the IP address of the SAM/DEC/008 will be 192.168.29.201.
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9. In the LAN9500A USB 2.0 properties dialog, select USB Bandwidth Usage Mode and then select Maximum Throughput
from the drop-down menu.
10. On the Power Management tab, ensure Allow the computer to turn off this device to save power is not enabled.
Windows Firewall
Because Ethernet packets are sent and received across networks, you may need to configure your Windows Firewall settings to
allow the SAM/DEC/008 to send and receive data.
Status LEDs
The SAM/DEC/008 has two status LEDs: a USB link LED and a PCM decom LED. Refer to the following table for LED
descriptions.
LED RED BLUE YELLOW GREEN PURPLE
USB link Reset System programming Reserved ARP - IP
address
configured and
ready for use
SAM/DEC/008
configuration being loaded
PCM (decom) No PCM
lock1
1. The SAM/DEC/008 is a minor frame decoder, therefore PCM decom lock means minor frame lock. During normal operation of the
SAM/DEC/008, this LED and the USB link LED should be green.
N/A Internal frame
engine reset
PCM Decom
lock (sync word
found)
DCLK seen/recovered but
no SYNC detected
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Connector pinout of the SAM/DEC/008
PIN NAME SEE SPECIFICATIONS TABLE COMMENT
1DATA BTTL inputs PCM data stream; single ended alternative to pins 3 and 4
2DCLK BTTL inputs PCM bit clock; single ended alternative to pins 12 and 13
3DATA+ RS-422 inputs PCM data stream; differential ended alternative to pin 1
4DATA- RS-422 inputs PCM data stream; terminated by 120Ω resistor
5DNC Do not connect
6X-PROG+ RS-485 Programming data; terminated by 120Ω resistor
7DNC Do not connect
8X-PROG- RS-485 Programming data; terminated by 120Ω resistor
9DNC Do not connect
10 DNC Do not connect
11 DNC Do not connect
12 DCLK+ RS-422 inputs PCM bit clock; differential ended alternative to pin 2
13 DCLK- RS-422 inputs PCM bit clock; terminated by 120Ω resistor
14 DNC Do not connect
15 GND Internal ground
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Ordering information
PART NUMBER DESCRIPTION
SAM/DEC/008 Ethernet based USB powered PCM decommutator
By default, a CON/USB/006 and an ACC/CON/012/00 cable are included with each SAM/DEC/008 card in the shipment. These
part numbers will be added to the Confirmation of Order unless an alternative option is specified (see the Cables data sheet). As
well as the CON/USB/006 and ACC/CON/012/00 cables, an ACC/ASY/022 cable is needed for use with a PCM controller
module; unless ordered, the ACC/ASY/022 is not included in the shipment.
Revision history
REVISION DIFFERENCES STATUS
SAM/DEC/008 First release Recommended for new programs
Supporting software
SOFTWARE DETAILS
DAS Studio 3 User interface for setup and management of data acquisition, network switches, recorders and ground
stations in an integrated environment
KSM-500 This module is supported by the KSM-500 suite of software tools
SWP/SDK/004 Software Development Kit for SAM/DEC/008
Related products
PRODUCT DETAILS
GS Works 8 Real-time and post-test data visualization and analysis software for GTS-500
Related documentation
DOCUMENT DETAILS
DOC/DBK/001 Acra KAM-500 Databook
DOC/HBK/002 Environmental Qualification Handbook
DOC/MAN/010 SAM/DEC programming interface
DOC/MAN/018 KSM-500 Databook
DOC/MAN/030 DAS Studio 3 User Manual
TEC/NOT/063 Grounding and shielding of the Acra KAM-500
Table of contents
