Ametek TR-2100, Руководство по эксплуатации

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TR-2100 User Manual 26
Hardware Configuration
If the TR2100 is to be set up as a Master unit, then set SW1 switch 6 to ON (GPS receiver
present) and SW1 switch 7 to OFF (Master). SW2 switch 1 should be set to OFF (serial
clock on COM2 disabled).
If the TR2100 is to be set up as a Slave unit, then set SW1 switch 6 to OFF (GPS receiver
not present) and SW1 switch 7 to ON (Slave). SW2 switch 1 should be set to OFF (serial
clock on COM2 disabled).
Serial Clock on COM2
Connecting External Clocks
As an alternative to using a GPS signal for time synchronization, an external clock
connected to the serial port COM2 can be used. Clocks which have an RS-232 interface and
a time code format of either LER (RCC8000) or NGTS 3.7.9 can be connected directly to
the external serial port on the rear of the chassis.
Clocks which have an IRIG-B format should be connected to the optional IRIG-B decoder
board (1079-215). The clock is connected to a BNC connector located on the rear of the
chassis. The IRIG-B decoder board then connects to the internal serial port COM2 located
on the SBC. The external serial port COM2 may not be used when the IRIG-B decoder
board has been fitted.
The IRIG-B decoder board can be set up for either the AC (modulated) or DC (non-
modulated) formats by changing the position of jumpers on JP1 and JP2 on the IRIG-B
decoder board. When both jumpers are placed on pins 1 and 2 of JP1 and JP2 then the board
is set up for AC mode. When both jumpers are placed on pins 2 and 3 of JP1 and JP2 then
the board is set up for DC mode.
Hardware Configuration
If an external clock is present on COM2, SW2 switch 1 should be set to ON (enable),
and SW1 switch 6 should be set to OFF (GPS receiver not present) and SW1 switch
7 should be set to ON (Master). If an external clock is not present on COM2, SW2
switch 1 should be set to OFF (disable). Refer to Table 1 and Table 3.