Verification; Figure 1-2. Cdm-710/L Rear Panel Data Interface Slots - Comtech EF Data CDM-710 Installation And Operation Manual

CDM-710/L Broadcast Satellite Modem
Introduction
programmable for either 50Ω or 75Ω impedance operations. The 'J3 | Rx'
port is a BNC female connector.
• The CDM-710L (L-Band), with 950 to 2000 MHz in 100 Hz resolution. The
'J1 | Tx' and 'J3 | Rx' ports are Type 'N' female connectors.
Various modulations and coding combinations compliant with DVB-S2 are
provided. This includes DVB-S (QPSK), DVB-DSNG (8PSK and 16QAM), and
DVB-S2 (QPSK, 8PSK, 16APSK, and 32APSK) modes. Constant Coding and
Modulation (CCM) operation is provided. Spectral rolloffs of 20%, 25%, and 35%
are available.

Figure 1-2. CDM-710/L Rear Panel Data Interface Slots

The unit front panel (Figure 1-1) features Light Emitting Diode (LED) array, keypad
and display for local monitor and control of the modem. Remote control is
available via an RS-232 / RS-485 2- or 4-wire bus or 10/100 Base-T Ethernet port
located on the base modem rear panel (Figure 1-2). The rear panel features two
terrestrial data interface slots that accept field-removable modules:
• CDI-40 ASI Data Interface.
• CDI-60 HSSI Data Interface.
• CDI-70 1000 Base-T Gigabit Ethernet Interface (GBEI).
For detailed information, see:
• Appendix B. CDI-40 ASI DATA INTERFACE
• Appendix C. CDI-60 HSSI DATA INTERFACE
• Appendix D. CDI-70 10/100/1000 BASE-T GIGABIT ETHERNET
INTERFACE (GBEI)

1.1.2.1 Verification

The unit includes a number of tests for rapid verification of the correct
functioning of the unit. Selection of a CW carrier permits measurement of carrier
center frequency or phase noise characteristic. A single-sideband carrier also is
available at the operating symbol rate to check I&Q phase and amplitude
1–3
MN/CDM710.IOM
Revision 12