Qg 2 Multi-Sync Gateway User Guide
Physical Interfaces
SJC-DEV7250-HR Rev. 1.14
36
7
Physical Interfaces
7.1
Antenna input
SMA 50 ohm. Protected for shorted antenna. The Ts2 provides 5.0 VDC bias to power remote active
antennas that provide 40 dB gain. The antenna system supports cable length up to 50 meters with
RG59/RG58 and 50 to 100 meters with LMR500/LMR600.
7.2
Console
The console port uses mini-USB serial terminal protocol. The connector is on the front panel and the
default settings are as follows:
Baud = 115.2K
Data Bits = 8 bits
Parity = None
Stop Bits = 1
Flow Control = None
7.3
Hard Reset Button
The Hard Reset Button provides 2 different functionalities depending on how it is used or pushed. These
are described below.
Note:
It should be noted that using the Hard Reset Button should be a last resort consideration as it is
abrupt and not a graceful way.
7.3.1
Hard Reset Button – Quick Push for Reboot
When Hard Reset Button is pushed and held for a short duration (approx. 1 or 2 seconds), it will reboot
the unit. The current configuration of Ts2 is preserved.
7.3.2
Hard Reset Button – Long Push for Factory Reset
When Hard Reset Button is pushed and held for a longer duration (approx. 10 seconds), it will do a
factory reset of the unit followed by a reboot. The current configuration of Ts2 will NOT be preserved
and the user should save and restore their configuration as needed.
7.4
Management interface
Management port is 10/100BaseT RJ45. The Management port supports DHCP, HTTP Webpages, XML,
SNMP (v2,v3), and SSH remote login.
7.5
Frequency Out port
BNC 50 ohm. 3.3V TTL DC blocked. Frequency Out selectable on the
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found.
Webpage.
7.6
1PPS timing output
BNC 50 ohm. 3.3V TTL output.
7.7
Time-of-Day / 1PPS input/output
ToD / 1PPS port is RJ45, input/output. The pin-outs for this RJ45 connector are defined in ITU-T G.703
Transmission Systems and Media, Digital Systems and Networks, Section 19. For more information
about ITU-T G.703, see [6].