19. Extensions for Mobile VSATs
The extensions in this appendix are available for the SatLink 1910 and 2900 VSATs with the MOBILE
software license key set. To use the transmit inhibit function described in section 19.1, the SatLink 1910
must be equipped with the SatLink 100 plug-in card, revision 2.0 or newer. For the SatLink 2900, the
transmit inhibit function is supported via the built in J1 connector and no plug-in card is required for
supporting the transmit inhibit function.
The below example shows a printout of the sw show CLI command for a VSAT with the appropriate
mobile license:
#
sw show
SW versions:
Boot : 9.0.1.7
Current : 13.0.2.65
Manual SW upgrade settings:
TFTP server IP addr : 10.10.1.1
File name : new.tgz
Automatic SW upgrade settings:
Activated : Yes
Upgrade status : Waiting
PID : 1022
IP address : 224.0.1.59
Port No. : 2001
Licenses for SW options:
GRE
MOBILE
PEP-TCP
QOS-4
PEP-HTTP
VLAN
19.1 Transmit Inhibit Function
In order to comply with FCC regulations, an external push button has to be installed on Maritime VSAT
installations, making the VSAT transmitter stop transmission within 100 ms after pushing the button.
The SatLink 2900 and SatLink 1910 (with SatLink 100 plug-in card installed) are capable of interfacing
an external push button to implement this ―transmit inhibit‖ function, typically being used to avoid
exposing people who have to work in the area around the antenna to the transmitted signal. When transmit
inhibit mode is cleared by releasing the external switch, the transmitter will be re-enabled.
19.1.1 SatLink 1910
The transmit inhibit switch is connected to the SatLink 100 plug-in card at the two center pins of the RJ11
connector, as shown in Figure 41 below. When short-circuited, transmit inhibit function is activated.
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