Digisat CDM-570/L User manual

Modems
CDM-570/L & CDM-570/L-IP
Satellite Modems
Overview
The CDM-570 and the CDM-570L are Comtech EF Data’s entry-level satellite modems that provide industry
leading performance and flexibility in a 1 RU package at a very competitive price. Designed to address the
market for low-cost terminals, the modems are available with 70/140 MHz or L-Band IF and EIA-530/-422,
V.35, EIA-232 and G.703 data interfaces. An optional Internet Protocol (IP) Module with 10/100Base-T
Ethernet port is available for IP-centric applications.
Typical Users
• Enterprise
• Internet Service
Providers
• Satellite Service
Features •Automatic Uplink Power Control (AUPC)
•Data rate range from 2.4 kbps to 9.98 Mbps •Embedded Distant-end Monitor and Control Providers
•CDM-570 & CDM-570-IP: 50 to 90 or 100 to 180 (EDMAC/EDMAC2)
MHz IF range •Redundancy options • Offshore & Maritime
CDM-570L & CDM-570L-IP: 950 to 2000 MHz IF •CDM-570 & CDM-570-IP: FSK
range communications to CSAT-5060 or • Mobile Operators
•Modulation types: BPSK, QPSK, OQPSK, 8PSK, KST-2000A
Patented 8-QAM, 16-QAM •CDM-570L & CDM-570L-IP: 10 MHz reference Common Applications
•Forward Error Correction (FEC) choices include
Turbo Product Code (TPC), Viterbi, Reed-
for BUC, FSK communications and optional
BUC power supply • Mobile Backhaul
Solomon, and Trellis Coded Modulation (TCM)
•Data Interfaces: EIA-422/530, V.35, G.703 T1/E1
(option), 10/100Base-T Ethernet (option)
•CDM-570L & CDM-570L-IP: 10 MHz reference
and power supply for LNB
•Optional, integrated IP Module with
• Communications on-
the-Move
•Standards based management via SNMP, Web,
or Telnet
•Symmetric as well as asymmetric operation for
maximum bandwidth efficiency
10/100Base-T Ethernet port (CDM-570-IP and
CDM-570L-IP)
�Static IP routing for unicast and multicast
�Header and payload compression for
• Disaster Recovery &
Emergency
Communications
•Support for mesh, star and hybrid network
topologies
maximum efficiency
�IGMP v1 and v2 • Enterprise
•G.703 clock extension for IP backhaul (option)
•Fast acquisition demodulator (±32 kHz
acquisition range, 64 kbps, Rate 1/2 QPSK:
150 ms average)
�VLAN capability with 802.1Q compliant
QoS
�Vipersat Management System (VMS)
integration
• Offshore & Maritime
Communications
• Satellite News
Gathering
Turbo Product Coding
The optional Turbo Product Codec delivers significant performance improvement when compared to Viterbi
with concatenated Reed-Solomon. It offers increased coding gain, lower decoding delay, and significant
bandwidth savings compared to traditional FEC.
EDMAC & AUPC Operation
The CDM-570/L-IP has the ability to monitor and control the distant end of a point-to-point satellite link using EDMAC or EDMAC2. User
data is framed and bits are added to pass control, status, and AUPC information. This is transparent to the user.
Management
The modems support SNMP, web-based and command line interfaces for management. The modems can also be configured and
monitored from the front panel, or through the remote M&C port (for non-IP mode of operation). Ten complete RF configurations may be
stored in the modem. An event log stores alarm and status information in non-volatile RAM, while the link statistics log stores link
performance (Eb/No and AUPC performance) for monitoring and reporting purposes.

G.703 Clock Extension
Mobile networks require precise synchronization of base stations, which is a challenge when using IP backhaul. Most operators are
forced to use GPS-based external equipment for site synchronization. CDM-570/L-IP offers a G.703 clock extension option that
propagates a high stability reference from hub to the remote. This process does not require additional bandwidth.
FAST Feature Enhancements
The FAST codes make it easy to upgrade the modem capability in the field. New features can be added on site, using FAST access
codes purchased from Comtech EF Data that can be entered via the front panel.
IP Module
With its innovative architecture and support for advanced capabilities, IP Module-equipped versions of the CDM-570/L allow for efficient
IP networking and transport over satellite. The CDM-570/L-IP supports a wide range of applications and network topologies.
Header Compression Option
Configurable on a per route basis, header compression reduces the bandwidth required for VoIP by as much as 60%. Example: A G.729
voice codec, operating at 8 kbps, requires 32 kbps bandwidth once encapsulated into an IP/UDP/RTP frame. With compression, the
same voice call needs only 10.8 kbps total WAN satellite bandwidth. Typical Web/HTTP traffic can also be reduced by 10% via IP/TCP
header compression.
Payload Compression Option
Configurable on a per route basis, payload compression can reduce the required satellite bandwidth by up to 40%.
Quality of Service (QoS) Option
The modems support multi-level QoS to reduce jitter and latency for real time traffic, provides priority treatment to mission critical
applications and allows non-critical traffic to use the remaining bandwidth. Supported modes are:
• DiffServ – Industry-standard method of providing QoS enabling seamless co-existence in networks that implement DiffServ.
• Max/Priority – Provides eight levels of traffic prioritization with the ability to limit maximum traffic per priority class
• Min/Max – Provides a Committed Information Rate (CIR) to each user defined class of traffic with the ability to allow a higher
burstable rate depending on availability
Vipersat Management System
• Dynamic SCPC carrier allocation & true bandwidth-on-demand
• User-defined policies for upstream carrier switching
• Star and full mesh capabilities using single hop on-demand
• Advanced switching takes advantage of using other modulation/forward error correction combinations
• Guaranteed bandwidth capability
VMS Network & Bandwidth Management
A Vipersat-powered network integrates these advanced modems with a powerful network management tool, the Vipersat Management
System (VMS). In addition to the traditional monitoring and control of the CDM-570/L-IP modems and the CDD-564/L and CDD-562L
demodulators, the VMS allows these devices to share bandwidth, and when needed, switch automatically to a dedicated SCPC channel.
In a Vipersat-powered network, the CDM-570/L-IP modem takes advantage of its fast acquisition demodulation to allow it to operate in a
shared mode. Inbound transmissions (from remote to hub) can be switched from a shared Selective Time Division Multiple Access
(STDMA) mode to a dedicated Single Carrier Per Channel (SCPC) connection via a variety of user defined policies or triggers. This
enables the network to more effectively handle real-time connection-oriented applications and reduces both latency and network
congestion. Through VMS, dynamic point-to-point mesh connections can also be established between remotes.
Upstream Switching
Through protocol classification in the remote terminals, the modem initiates automatic switching. VMS establishes dSCPC bandwidth
based on policies that can be individually enabled on a per-remote basis, or globally enabled. Policies can be configured for a variety of
applications such as VoIP, video (VTC), or based on a load, or via a schedule, Type of Service (ToS), or QoS rules such as IP port or IP
address and protocol type. Operators are able to set minimum and maximum data rates for each remote as well as excess data rates for
an initial upstream switch.
Vipersat Operation Mode
Vipersat operation is enabled via a FAST feature code. Networks can easily start off in point-to-point or point-to-multipoint configurations.
As the network grows and users wish to take advantage of the bandwidth on-demand savings by implementing a Vipersat network,
modems can easily be upgraded to Vipersat mode. Vipersat mode provides for the ability to operate in the following modulation/FEC
rates:
STDMA QPSK, Rate 3/4 Turbo FEC – all STDMA modes
Data Rate Range: 64 kbps – 4.5 Mbps
BPSK, Rate 5/16 Turbo FEC – Entry Channel Mode only
Data Rate Range: 32 kbps to 937 kbps
SCPC All Turbo Product Code FEC rates as detailed in the following specifications

Demodulator
Specifications
Frequency Range CDM-570 & CDM-570-IP: 50 to 90 or
100 to 180 MHz, 100 Hz resolution
CDM-570L & CDM-570L-IP:
950 to 2000 MHz, 100 Hz resolution
Data Interfaces EIA-422/-530 DCE, V.35 DCE, Sync EIA-232,
10/100Base-T Ethernet (option), G.703 T1 balanced
(option), G.703 E1 balanced or unbalanced (option)
Data Rate Range
(See user manual for
details)
2.4 kbps to 9.98 Mbps (depending on modulation,
FEC and framing), 1 bps step with fully independent
TX and RX rates
Modulation & FEC Data Rate Range
5/16 BPSK TPC 2.4 kbps to 0.937 Mbps
21/44 BPSK TPC 2.4 kbps to 1.430 Mbps
1/2 BPSK 2.4 kbps to 1.500 Mbps
1/2 QPSK/OQPSK 4.8 kbps to 3.000 Mbps
3/4 QPSK/OQPSK 7.2 kbps to 4.500 Mbps
7/8 QPSK/OQPSK 8.4 kbps to 5.250 Mbps
2/3 8PSK TCM 8.7 kbps to 4.400 Mbps
21/44 QPSK/OQPSK TPC 4.8 kbps to 2.860 Mbps
3/4 QPSK/OQPSK TPC 7.2 kbps to 4.500 Mbps
7/8 QPSK/OQPSK TPC 8.4 kbps to 5.250 Mbps
0.95 QPSK/OQPSK TPC 9.1 kbps to 5.666 Mbps
3/4 8PSK/8-QAM TPC 10.8 kbps to 6.750 Mbps
7/8 8PSK/8-QAM TPC 13.6 kbps to 7.875 Mbps
0.95 8PSK/8-QAM TPC 15.3 kbps to 8.500 Mbps
3/4 16-QAM TPC 14.4 kbps to 9.000 Mbps
7/8 16-QAM TPC 16.8 kbps to 9.980 Mbps
Uncoded BPSK 4.8 kbps to 3.000 Mbps
Uncoded QPSK/OQPSK 9.6 kbps to 5.000 Mbps
Note: Data rate specifications reflect CDM-570/L or CDM-570/L-IP modem
operating in non-Vipersat mode
Scrambling Mode dependent – ITU V.35, or proprietary
externally synchronized
FEC Options
Viterbi Rate 1/2 BPSK, QPSK/OQPSK
Rate 3/4 and 7/8 QPSK/OQPSK
and 16-QAM w/RS
TCM 8PSK 2/3
(Closed network – not IESS-310)
Turbo Product Coding Rate 21/44 BPSK, 5/16 BPSK,
Rate 21/44 QPSK/OQPSK
Rate 3/4 and Rate 7/8 QPSK/OQPSK,
8PSK/8-QAM and 16-QAM
Rate 0.95 QPSK/OQPSK and 8PSK/8-QAM
Reed-Solomon Proprietary 220/200 and 200/180
modes available
Uncoded BPSK, QPSK/OQPSK
M&C Interface EIA-232, EIA-485 (2- or 4-wire),
Ethernet 10/100Base-T (dependent on operational mode)
Input/Output Impedance CDM-570 & CDM-570-IP: matched for
50/75 n, BNC connector
CDM-570L & CDM-570L-IP: transmit and receive
50 n, female Type N connector
External Reference Input 1, 2, 5, 10 or 20 MHz, BNC connector
Form C Relays TX, RX traffic alarms and unit faults
Modulator
CDM-570 &
CDM-570-IP
CDM-570L &
CDM-570L-IP
Frequency Stability ±1 ppm, 0º to 50ºC
(32º to 122ºF)
±0.06 ppm, 0º to 50ºC
(32º to 122ºF)
Output Power 0 to –25 dBm, 0.1 dB
steps
0 to –40 dBm, 0.1 dB
steps
Accuracy ±0.5 dB over frequency
and temperature
±1.0 dB over frequency
and temperature
Phase Noise < 0.75 degrees RMS
double-sided,
100 Hz to 1 MHz
< 1.2 degrees RMS
double-sided,
100 Hz to 1 MHz
Output Spectrum/
Filtering
Meets IESS-308/-309 power spectral mask
Harmonics and Spurious <-55 dBc/4 kHz
(typically < -60 dBc/4 kHz)
Transmit On/Off Ratio 55 dB minimum
External TX Carrier Off By TTL LOW signal, or RTS
TX Clock Options Internal (SCT), external (TT), loop timing with
symmetric or asymmetric operation (data interface
dependent)
CDM-570 &
CDM-570-IP
CDM-570L &
CDM-570L-IP
Input Power Range -30 to -60 dBm -130 + 10 log symbol rate,
dBm (minimum)
-90 + 10 log symbol rate,
dBm (maximum)
Max Composite Level +35 dBc, up to
-5 dBm absolute max.
+40 dBc, up to
-10 dBm absolute max.
Acquisition Range ±1 to ±32 kHz,
1 kHz step
±1 to ±32 kHz,
1 kHz step, symbol rate <=
625 ksps
±1 to ±200 kHz,
1 kHz step, symbol rate >
625 ksps
Acquisition Time Highly dependent on data rate, FEC rate, and
demodulator acquisition range. Example:
120 ms average at 64 kbps, Rate 1/2 QPSK, ± 10 kHz
acquisition sweep range, 6dB Eb/No
Receive Buffer 512, 1024, 2048, 4096, 8182, or 16384 bits
Receive Clock Options Buffer disabled (RX satellite), buffer enabled
(symmetric or asymmetric operation) (data interface
dependent)
Clock Tracking ±100 ppm minimum
Monitor Functions Eb/No, frequency offset, BER, buffer fill status, RX
signal level
Example BER Performance
For symbol rates up to 2.5 Msps (See user’s manual for higher symbol rates).
Guaranteed Eb/No, in dB (typical values in parentheses) with two adjacent carriers 7
dB higher. (See the user’s manual for a complete listing of the performance of all
FEC types, code rates, and modulation types.)
Viterbi
BPSK,
QPSK/OQPSK
1/2 3/4 7/8
10-
5
5.4 (4.9) 6.8 (6.3) 7.7 (7.2)
10-
7
6.7 (6.2) 8.2 (7.7) 9.0 (8.6)
Viterbi & Concatenated Reed-Solomon 220/200 or 200/180
BPSK,
QPSK/OQPSK
1/2 3/4 7/8
10-
5
4.3 (4.0) 5.6 (4.7) 6.5 (6.0)
10-
7
4.5 (4.2) 6.0 (5.2) 6.9 (6.5)
Turbo Product Codec
BPSK 5/16 21/44
10-
6
2.4 (2.1) 2.8 (2.5)
10-
7
2.6 (2.3) 3.1 (2.8)
10-
8
2.7 (2.4) 3.3 (2.9)
QPSK/OQPSK 21/44 3/4 7/8 0.95
10-
6
2.9 (2.6) 3.8 (3.4) 4.3 (4.0) 6.4 (6.0)
10-
8
3.3 (2.8) 4.4 (4.0) 4.5 (4.2) 6.9 (6.5)
8PSK 3/4 7/8 0.95
10-
6
6.2 (5.8) 7.0 (6.6) 9.3 (8.9)
10-
8
6.8 (6.3) 7.2 (6.8) 10.3 (9.9)
8-QAM 3/4 7/8 0.95
10-
6
6.5 (6.1) 6.6 (6.2) 9.6 (9.2)
10-
8
7.2 (6.8) 6.8 (6.4) 10.6(10.2)
16-QAM 3/4 7/8
10-
6
7.4 (7.0) 8.1 (7.7)
10-
7
7.8 (7.3) 8.2 (7.8)
10-
8
8.2 (7.7) 8.3 (7.9)
Low-Noise Block Converter (LNB) Support
(CDM-570L & CDM-570L-IP Only)
LNB Voltage +13, +18, and +24 VDC @ 500 mA maximum
LNB Reference 10 MHz via RX center conductor,
-3 dBm ± 3 dB
Block Up Converter (BUC) Support
(CDM-570L & CDM-570L-IP Only)
BUC Voltage 24 VDC, 90 W @ 50°C, 100 W @ 30°C
(internally fitted option)
48 VDC, 150 W @ 50°C, 180 W @ 30°C
(internally fitted option, not available with -24 VDC
input)
BUC Reference 10 MHz via TX center conductor,
0 dBm ± 3 dB
FSK Support Via TX center conductor with FSK BUCs

Environmental & Physical Available Options
Temperature Operating: 0 to 50°C (32 to 122°F)
Storage: -25 to 85°C (-13 to 185°F)
Power Supply 100 to 240 VAC, 50/60 Hz
-24 VDC (HW option)
-48 VDC (HW option)
Power Consumption
(See Manual)
CDM-570: 29 W typical (32 W max.)
CDM-570-IP: 37 W typical
CDM-570L: 29 W typical (32 W max.) w/o BUC
CDM-570L-IP: 37 W typical w/o BUC
Dimensions
(height x width x depth)
CDM-570-IP: 1.75” x 19” x 12”
(4.4 x 48.3 x 30.5 cm)
CDM-570L-IP: 1.75” x 19” x 16”
(4.4 x 48.3 x 40.6 cm)
Weight CDM-570 & CDM-570-IP: 6 lbs (2.7 kg)
CDM-570L: 7 lbs (3.2 kg) (without BUC P/S)
CDM-570L & CDM-570L-IP: 16 lbs (7.2 kg) including
150 W BUC power supply
How Enabled Option
FAST Variable rate to 2.048 Mbps
FAST Variable rate to 5 Mbps
FAST Variable rate to 9.98 Mbps
FAST 8PSK, 8-QAM modulation
(8-QAM with TPC only)
FAST 16-QAM modulation
FAST G.703 clock extension
(requires G.703 E1/T1 interface option)
Hardware G.703 E1/T1 interface
Hardware Reed-Solomon Codec board
Hardware Turbo Codec board
Hardware Power supply, AC input
Hardware Power supply, -24 VDC input
Hardware Power supply, -48 VDC input
Hardware 24 VDC, 90 W @ 50°C (100 W @ 30°C)
BUC power supply, AC input, -24 or -48
VDC input
Hardware 48 VDC, 150 W @ 50°C (180 W @
30°C) BUC power supply, AC input or -
48 VDC input
Hardware IP Module
IP Module Options:
FAST Header compression
FAST Payload compression
FAST Quality of Service (QoS) – 3 modes
FAST Vipersat Management System
Integration
Operations & Maintenance
Configuration and Front panel
Management Remote port – EIA-232 or EIA-485 (2- or 4-wire)
SNMP with MIB II and private, modem-specific MIB
Telnet
Web browser (HTTP)
Console interface (EIA-232, RJ-12 connector)
Software/firmware upgrade via FTP
IP traffic statistics
Faults and alarms
Configuration backup and restoral
Security Networking Protocols
Password protection
Access list
Accessories
CRS-170A CDM-570L & CDM-570L-IP: 1:1 Modem Redundancy IF Switch
CRS-180 CDM-570 & CDM-570-IP: 1:1 Modem Redundancy IF Switch
CRS-280 CDM-570: 1:N Modem Redundancy IF Switch Module
CRS-280L CDM-570L: 1:N Modem Redundancy IF Switch Module
CRS-300 CDM-570 & CDM-570L: 1:10 Modem Redundancy Switch
Regulatory
CE Mark
FCC
EN 301 489-1 (ERM)
EN55022 (Emissions)
EN55024 (Immunity)
EN 61000-3-2
EN 61000-3-3
EN60950 (Safety)
FCC Part 15, Subpart B
RFC 768 – UDP RFC 2045 – MIME
RFC 791 – IP RFC 2236 – IGMP v2
RFC 792 – ICMP RFC 2474 – Diffserv
RFC 793 – TCP RFC 2475 – Diffserv
RFC 826 – ARP RFC 2578 – SMI
RFC 856 – Telnet RFC 2597 – AF PHB
RFC 862 – Ping RFC 2598 – Expedite Forwarding
RFC 894 – IP RFC 2616 – HTTP
RFC 959 – FTP RFC 2821 – SMTP
RFC 1112 – IP Multicast RFC 3412 – SNMP
RFC 1213 – SNMP MIB II RFC 3416 – SNMPv2
RFC 1812 – IPv4 Routers RFC 3418 – SNMP MIB
CDM-570/L-IP Satellite Modem back panel