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.

600

Open Network Satellite Modem (2.4 kbps – 20 Mbps

)

Installation and Operation Manual

For Firmware Version 2.0.1 or hi

(

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

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