Grass Valley LGK-3901 - Manual (Page 34)

GUIDE TO INSTALLATION AND OPERATION
28 | LGK-3901/DSK-3901
4.8.4 Temperature Probe
The Temperature Probe feature requires the LGK-3901-OPT-TEMP option.
This option provides a low cost temperature sensor (Sensorsoft ST6154J) for measuring the local temperature,
typically from the roof of the building. The temperature is recorded in Celsius or Fahrenheit, and can be displayed
(and continually updated) on a keying layer of the LGK-3901 via an Easytext template.
The thermometer connects via cable to an RS232 serial port on the LGK-3901 and can be located up to a thousand
feet away without the need for a battery or external power adapter. It has an external stainless steel probe for outdoor
applications or where liquids are present.
4.8.4.1 Temperature Probe Parts
Miranda Part Number Description
4100-0041-0 Sensorsoft ST6154J RS232 Temperature Sensor with External Probe
3503-0024-0 Sensorsoft C2000 Cable, DB9-to-RJ45, 20 feet
1897-1700-100 Miranda Adapter, RJ45-to-DE-9 for RS232 DTE
0702-1400-100 Ethernet Cable, RJ45-to-RJ45 CAT5 UTP, Flex 10 feet
Note: For pin-outs to be correct at the LGK-3901, parts must be connected in the order listed in the table above.
4.8.4.2 Temperature Probe Serial Port Settings
The serial port protocol and baud rate must be set to the following values via the front panel or Configurator Tool:
• Protocol
ST61XX Temp Sens
• Baud
Rate 1200
4.8.4.3 Temperature Probe Easytext Templates
When the Easytext option (LGK-3901-OPT-TXT) is also enabled, the special Temperature Probe datasource names
(show in the table below) may be used for text boxes within any Easytext template used on the system. When the
Easytext option is not enabled, a special template name “temperature.oxa” is reserved for displaying the special
Temperature Probe datasources. This is the only Easytext file that can be displayed on such a system.
Temperature Probe Datasource Name Displays Accuracy
TEMPERATURE_CELSIUS Celsius Rounds to nearest integer
TEMPERATURE_CELSIUS_TENTHS Celsius One decimal place
TEMPERATURE_FAHRENHEIT Fahrenheit Rounds to nearest integer
TEMPERATURE_FAHRENHEIT_TENTHS Fahrenheit One decimal place
Once an Easytext template has been generated containing one or more of the Temperature Probe datasource names,
then this can be loaded into a keying layer and cut up to display the temperature on-air.