Comtech EF Data CDM-600 User manual

Part Number MN/CDM600.IOM Revision 7
IMPORTANT NOTE: The information contained in this document supercedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
CD
M
-
600
Open Network Satellite Modem (2.4 kbps – 20 Mbps
)
Installation and Operation Manual
For Firmware Version 2.0.1 or hi
g
he
r
(
see New in this Release
–
Section 1.5
)

s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata a.doc 1
Errata A
Comtech EF Data Documentation Update
Subject: Change AUPC Parameters in Remote Control
Date: November 23, 2005
Document: CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps)
Installation and Operation Manual
Revision 7, dated February 9, 2005
Part Number: MN/CDM600.EA7
Collating Instructions: Attach this page to page 16-13
Comments:
The following changes affects the values shown on page 6-9 and 16-13.
Change Specifics:
Change to AUPC Target Eb/No Parameter
Since Revision 7 of the CDM-600 Manual was published, the range of the value of target Eb/No has been
increased. Effective in firmware version 2.1.1 and subsequent:
• Previously the maximum value was 9.9 dB
• New maximum value is 14.9 dB.
This affects the front panel and the remote control, refer to the remote control command table for more
detail.

s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata a.doc 2
AUPC
Parameters
APP= 6 bytes Command or Query.
Defines AUPC operating parameters. Has the form abc.cd,
where:
a=Defines action on max. power condition.
(0=do nothing, 1=generate Tx alarm)
b=Defines action on remote demod unlock.
(0=go to nominal power, 1=go to max power)
c.c=target Eb/No value, for remote demod, from 0.0 to
14.9 dB, where numbers above 9.9 use hex
representation for the 1 st character, ie 14.9 is
coded as E.9.
d =Max increase in Tx Power permitted, from
0.0 to 9.0 dB
Example: APP=015.67 (Sets no alarm, max power, 5.6 dB
target Eb/No and 7 dB max power increase.
APP=
APP?
APP*
APP#
APP? APP=abc.cd
(see description of
arguments)

s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata b.doc 1
Errata B
Comtech EF Data Documentation Update
Subject: Revised Miscellaneous Table
Date: April 18, 2006
Document: CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps)
Installation and Operation Manual
Revision 7, dated February 9, 2005
Part Number: MN/CDM600.EB7
Collating Instructions: Attach this page to page 15-9
Comments:
The following changes affects the values shown on page 15-9.
Change Specifics:
15.2 Miscellaneous
Front panel Tactile keypad, 6 keys (Up/Down, Left/Right, Enter/Clear)
Vacuum Fluorescent Display (blue) - 2 lines of 40 characters
Loopbacks Internal IF loopback, RF loopback, digital loopback, and inward/outward loopback
Fault relays Hardware fault, Rx and Tx Traffic Alarms, Open Network Backward Alarms
Type: Form C Contacts. Rating: Less than ±15 volts up to 1 Amp
M&C Interface EIA-232 and EIA-485 (addressable multidrop, 2-wire or 4-wire)
M&C Software SATMAC or CMCS software for control of local and distant units
Dimensions 1U high, 12 inches (305 mm) deep
Weight 10 lbs (4.5 kgs) max
AC consumption 25 watts (typical) 55 watts (maximum)
Operating voltage 100 - 240 volts AC, +6%/-10% - autosensing
(total absolute max. range is 90 - 254 volts AC)
Operating temperature 0 to 50oC (32 to 122oF)

s:\tpubs\manuals\released_word\modems\cdm600_rev7\errata c.doc 1
Errata C
Comtech EF Data Documentation Update
Subject: Chapter Title
Date: July 12, 2006
Document: CDM-600 Open Network Satellite Modem (2.4 kbps – 20 Mbps)
Installation and Operation Manual
Revision 7, dated February 9, 2005
Part Number: MN/CDM600.EC7
Collating Instructions: Attach this page to page 15-3
Comments:
The following changes affects odd numbers pages.
Change Specifics:
CDM-600 Satellite Modem Revision 7
Summary of Specifications MN/CDM600.IOM

Filename: T_ERRATA 1
Errata D
Comtech EF Data Documentation Update
Subject: Changed Input Power Range
Date: July 18, 2006
Document: CDM-570/570L Satellite Modem with Optional IP Module,
Installation and Operation Manual, Rev. 4, dated April 12, 2006
Part Number: MN/CDM-570L.ED4
Collating Instructions: Attach this page to page 12-3
Comments:
Highlighted Input Power Range changes are as follows:
Change Specifics:
12.2 Demodulator
Data rate range, operating modes, de-scrambling, input impedance/return loss etc., as per
Modulator
Input power
range
CDM-570 Desired Carrier: -30 to -60 dBm.
+35 dBc maximum composite, up to -5 dBm, absolute max.
CDM-570L Desired Carrier: -130 + 10 log(Symbol Rate) to -90 + 10 log(Symbol Rate).
+40 dBc maximum composite, up to –10 dBm, absolute max.

Filename: T_ERRATA 2

Filename: T_ERRATA 1
Errata E
Comtech EF Data Documentation Update
Subject: Changed Figure 7-5, TPC Curve for Rate 7/8
Date: July 27, 2006
Document: CDM-570/570L Satellite Modem with Optional IP Module,
Installation and Operation Manual, Rev. 4, dated April 12, 2006
Part Number: MN/CDM-570L.EE4
Collating Instructions: Attach this page to page 7-14
Comments:
Chnaged slope of curves for TPC 7/8 for Figure 7-5. The following table highlights the changes
to the BER curve.
Change Specifics:
TURBO PRODUCT
CODEC
Rate 7/8 QPSK
Rate 7/8 8-PSK
Rate 7/8 16-QAM
BER
(With two adjacent
carriers, each 7 dB
higher than the
desired carrier)
For:
BER=10-5
BER=10-8
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in
parentheses)
4.3 dB (4.0 dB)
4.5 dB (4.2 dB)
Rate 7/8 (8-PSK)
Guaranteed Eb/No:
(typical value in
parentheses)
7.0 dB (6.6 dB)
7.2 dB (6.8 dB)
Rate 7/8 (16-QAM)
Guaranteed Eb/No:
(typical value in
parentheses)
8.1 dB (7.7 dB)
8.3 dB (7.9 dB)

Filename: T_ERRATA 2
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1 2 3 4 5 6 7 8 9 10 11 12
Eb/No in dB
Uncoded
BPSK/QPSK
Comtech Turbo Product Codec
Rate 7/8 QPSK/OQPSK,
8-PSK and 16-QAM
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 7/8
16-QAM
Spec limit
Rate 7/8
8-PSK
Spec limit
Rate 7/8
QPSK/OQPSK
Typical performance
Uncoded
8-PSK
Uncoded
16-QAM
Figure 7-5. Comtech EF Data Turbo Product Codec
Rate 7/8 QPSK/OQPSK, 8-PSK AND 16-QAM