Comtech EF Data MCED-100 - Manual (Page 42)

MCED-100 MetaCarrier Embedding Device Revision 1
Rear Panel Connectors and Pinouts MN-MCED100
3–6
3.4.1 GPS INPUT | EXTERNAL ANTENNA Connector, Type SMA
The ‘GPS INPUT | EXTERNAL ANTENNA’ interface is a 50Ω Type SMA female
connector. The internal GPS receiver used in the MCED‐100 is a U‐Blox LEA‐6H
GPS module, and the recommended external active antenna is a Panasonic VIC‐
100.
The internal GPS receiver provides short circuit detection, and has the following active antenna
requirements:
Requirement Recommendation
Reverse DC Injection Protection +/- 15 VDC
Signal Level (Sensitivity) -160 dBm to -125 dBm (typical)
Maximum Input Power -20 dBm
Active Antenna Power 5 VDC @ 50 mA (.25 mW)
Return Loss 10 dB (better than)
Noise Figure 1.5 dB (typical)
Center Frequency 1575.42 MHz
Bandwidth 45 MHz (maximum)
Antenna Performance Gain 20 dB (maximum)
3.4.2 GPS INPUT | RS232 INPUT Connector, DB-9M
The ‘GPS INPUT | RS232 INPUT’ interface is a 9‐pin Type ‘D’ male (DB‐9M)
connector. It is intended for serial connection to an external GPS receiver
unit. Refer to Table 3‐2 for pinouts.
Table 3-2. GPS INPUT | RS232 INPUT Connector Pinouts
Pin # Description Direction
1 Ground –
2 GPS Receive Data In
3 GPS Transmit Data Out
4 Reserved - do not connect to this pin –
5 Ground –
6 Reserved - do not connect to this pin –
7 Reserved - do not connect to this pin –
8 Reserved - do not connect to this pin –
9 Reserved - do not connect to this pin –