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9625LG Series Logo Inserters and Media Keyers Manual
Table 2-9 shows the maximum limits that the user must adhere to so that no circuitry is damaged.
Description
Maximum GP+3.3V current
load
Minimum input voltage for a high
Maximum input voltage for a low
Maximum GPO sink current
All GPI inputs are level triggered. Lowering the GPI input to a potential below Vext will select the
allocated preset definition. When one of the GPI inputs is activated, the corresponding function is
executed. If multiple inputs are active both commands are ignored until a single input is recognized.
The GPI functions are programmable using the GPI Setup menu item on the PRESET menu. (See
section 3.8.1).
2.10. CONNECTING THE OPTIONAL TEMPERATURE PROBE
The 9625LG Series Keyer is available with an optional temperature probe that is used to input data for
display in a temperature logo. Consult the temperature probe manual for information on installing the
temperature probe. Connect the temperature probe power adapter to the probe unit. Connect the
temperature probe to the COM D, SERIAL CONTROL (C), or COM E (NET) connector on the Keyer
unit. Alternatively, you can also connect the temperature probe via the virtual serial port (COM E) by
using a serial to Ethernet adapter (see section 2.10.1). The temperature probe ships with an adapter
cable to convert its RJ45 connector to a standard 9 pin D connector. The RJ45 plugs into the
temperature probe. You will need to create a straight through 9 pin male to female cable of the desired
length according to the diagram in Table 2-10 to connect the probe to the Keyer unit. The serial port on
the keyer unit must be set for RS-232 operation as described in section 2.1.5.
The temperature probe cable should not exceed 1000 feet.
In order for the temperature probe to communicate to the Keyer unit you must configure the SERIAL
CONTROL C, COM D, or COM E (NET) port for the correct protocol and baud rate. The Serial Control,
COM D or COM E (net) menu items on the General menu is used to accomplish this (depending on
which communications port is used for the temperature probe). Set this menu item to Temperature in
order for the temperature probe to communicate to the Keyer unit. See section 3.6.5 for information on
setting the serial port protocol.
Page 2-14
Name
I
max
GP+3.3V
V
high min
gpi
V
low max
gpi
I
max
gpo
Table 2-9: GPIO Maximum Ratings
Revision 4.2
Value
100 mA
3 V
0.8 V
25 mA
INSTALLATION
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