Tait TB8100 Service Manual page 58

Digital Outputs
Tx Relay Driver
Output
Opto-coupled
Keying Input
Opto-coupled Gate
Output
Third-party
Connector
RS-232 Serial Port
Ethernet Adaptor
Power Supplies
58 Reciter Circuit Description
The digital outputs are open collector outputs. The maximum current
rating of these outputs is 100mA. The maximum voltage that should be
applied to these outputs is 30V.
The Tx relay driver output is an open collector output. The maximum
current rating of this output is 250mA. The maximum voltage that should
be applied to this output is 30V.
This input operates in parallel with the Tx Key input. Although it has the
same functionality as the Tx Key input, it is electrically isolated. The input
may be driven with a voltage in the range ±10V to ±60V. The input
current is regulated to 10mA.
This output operates in parallel with the Rx Gate output. Although it has
the same functionality as the Rx Gate output, it is electrically isolated. The
maximum output current is 120mA. The maximum voltage that should be
applied across this output is ±350V.
The third-party connector provides access to audio, keying, gating and
digital I/O signals to allow the integration of third-party modules such as
scramblers.
The TaitNet RS-232 system interface board is fitted with an RS-232 serial
port (9-way female D-range connector). Note that when a reciter fitted
with a TaitNet RS-232 system interface board is used in a TB8100 base
station, the RS-232 port on the control panel is disabled. In this situation
you must connect to the RS-232 port at the rear of the reciter.
The TaitNet Ethernet system interface board is fitted with an Ethernet
adaptor which provides Ethernet connectivity via a standard RJ45
connector. Note that when a reciter fitted with a TaitNet Ethernet system
interface board is used in a TB8100 base station, connection via the RS-232
port on the control panel is only available when the base station first powers
up. Refer to Application Note TN-1142-AN for more details.
The system interface board is powered via the 40-way flexible connection
to the reciter.
TB8100 Service Manual
© Tait Electronics Limited September 2006