Model 5600MSC Master Clock/SPG Manual
INSTALLATION
Revision 1.6
Page
2-7
activate GPIs simply by connecting the GPI input pins to Ground using a button, switch, relay or an
open collector transistor.
The outputs are internally pulled up to +5 volts DC. Care must be taken to limit the load to 0.5W so
there is no affect on the power supply source in the frame. The functions of the general purpose
outputs are set using the
GPO 1 Function
and
GPO 2 Function
menu items on the
GENERAL
Setup
menu. (See section 3.7.4)
Figure 2-2 shows the circuitry for each of the I/O pins.
365 ohm
22 ohm
+ 5 Volts
Typical
I/O Pin
Figure 2-2: Typical GPIO Circuitry
2.4.
CONNECTING THE SERIAL PORTS IN SYNCHRO MODE
In the event of a changeover occurrence, it is necessary that all outputs on one 5600MSC have the
same timing as those on the other. Identical timing for both 5600MSCs is assured by locking both to
the same frequency and phase source (e.g. GPS or by genlocking one to the other). Identical phasing
of the independent black outputs is assured by implementing the
Syncro
mode in the 5600MSCs.
Even if you are not using the 5600MSC units with a 5600ACO changeover, you can set the time
reference of one 5600MSC so that it locks to the system time of the other. See section 3.5.2.
To use this mode, connect both 5600MSC communication ports together using the 5600MSC-1-0-30
Synchro cable supplied with the 5600ACO or make your own as shown in Table 2-7. On the 5600MSC
connected to the A inputs of the 5600ACO, set the Serial Port Mode to Synchro Tx. On the 5600MSC
connected to the B inputs of the 5600ACO, set the Serial Port Mode to Synchro Rx. The system
configuration of both units can now be accomplished by setting the menu items of the Master A unit
only. Most of the menu settings on the Master B unit can be viewed but can not be changed. These
menu items will be dimmed when they are viewed on the Master B unit. Menu items of the Master B
that can be changed will be shown in the normal display brightness. See section 3.7.1 for more
information.
USO
RESTRITO