Lance Design TDC-100B, Предварительное руководство по установке и эксплуатации

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GPI OUTPUT CONNECTIONS
The GPI Output connections also appear on the 15-pin RS-232/GPI connector.
These outputs are 74HC-series outputs.
They may be used to drive CMOS or TTL-
compatible 5-volt inputs only. They are not suitable for pulling down 24v, driving
relays (other than low-power 5v relays), or other types of interface.
The maximum voltage that can be switched is +5 volts. The maximum allowable
current is 20 ma per output.
There are five outputs, with the following assignments:
GPI Out 1 - Triggered when Ch A exits a multi-point loop
GPI Out 2 - Triggered when Ch B exits a multi-point loop
GPI Out 3 - Triggered when Ch C exits a multi-point loop
GPI Out 4 - Triggered when Ch D exits a multi-point loop
GPI Out 5 - Triggered when A,B,C or D exits a multi-point loop
REFERENCE VIDEO CONNECTIONS
The BNC connectors on the rear panel are for analog reference video. Note that this
input must be composite
analog black or other analog video synchronous with the
video system with which the TDC-100B is being used.
Tri-level or other sync formats will not work properly.
The two BNC connectors are a loop-through, high-impedance input, and the loop-
through connector should be terminated in 75 ohms if not looped to another device.
P-BUS CONTROL INPUT
The two DB-9 connectors on the rear panel labeled ‘P-Bus In’ and ‘P-Bus Loop’ are
identical and wired together pin-for-pin for the RS-422 circuits. Use either as the
control input from the switcher. The second connector may be connected to another
TDC-100B or other P-Bus device.
The data format for the P-Bus input is RS-422, 38.4K Baud. Parity may be selected
in the TDC-100B menu (Item 30) to be even, odd, or none. This parity selection
must match the data being sent from the switcher. The default setting is odd parity.