Grass Valley K-Frame Installation Planning Guide Jul 07 2014 - Manual (Page 46)

46 K-FRAME — Installation Planning Guide
Section 3 — K-Frame Cabling
relay coils to clamp inductive spikes. Shielded cable is recommended for
the connection from the switcher to the user tally system.
Pin Assignments
RS-422/485 Ports
Eight RS-422/485 ports are available on the rear of the K-Frame Video Pro-
cessor, and can be used to control various devices, or for switcher control
by an external controller.
Note The Frame serial port pinout is automatically configured based on assign-
ment. The Frame is the bus controller when controlling external devices and
PBus. The Frame is a tributary when controlled by an editor.
RS-232 Ports
RS-232 serial ports are located on each processor board (Video Processor,
Panel Processor, Menu PC), available for maintenance and diagnostics.
Table 4. Tally and GPI Output Specifications
Maximum current for any one output 1 amp AC/DC
Maximum current for any one common 2 amp AC/DC
Maximum off (open circuit) voltage between output and common 60 Volts peak
Maximum voltage between any point and ground (chassis) 60 Volts peak
Table 5. RS-422/485 Pinouts
Socket Pin Bus Controller Tributary
1 Chassis Ground Chassis Ground
2 RxA (-) TxA (-)
3 TxB (+) RxB (+)
4 Signal Ground Signal Ground
5 Not used Not used
6 Signal Ground Signal Ground
7 RxB (+) TxB (+)
8 TxA (-) RxA (-)
9 Chassis Ground Chassis Ground
Pin 1 Pin 5
Pin 6 Pin 9
D-9 Female