Basler DGC-2020HD - Page 59

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DGC-2020HD Specifications
Terminals.......................................... 56 (485 A), 57 (485 B), and 58 (485 shield)
RS-485 Modbus supports a single Modbus Master only.
RDP-110
Minimum Wire Size .......................... 20 AWG (0.52 mm
2
)
Maximum Wire Length ..................... 4,000 feet (1,219 meters)
Terminals.......................................... 61 (RDP-110 TxD+), 62 (RDP-110 TxD–)
USB
Specification Compatibility ............... USB 2.0
Connector Type ................................ Mini-B jack
Real-Time Clock
Clock has leap year and selectable daylight saving time correction. Backup battery sustains timekeeping
during losses of DGC-2020HD control power.
Resolution ........................................ 1 s
Accuracy........................................... ±1.73 s/d at 25°C (77°F)
Clock Holdup
Battery Holdup Time ........................ Approximately 10 years
Battery Type ..................................... Rayovac BR2032, lithium, coin-type, 3 Vdc, 195 mAh
Basler Electric P/N 38526
Note
Failure to replace the battery with Basler Electric P/N 38526 may void
the warranty.
Caution
Replacement of the backup battery for the real-time clock should be
performed only by qualified personnel.
Do not short-circuit the battery, reverse battery polarity, or attempt to
recharge the battery. Observe polarity markings on the battery socket
while inserting a new battery. The battery polarity must be correct in
order to provide backup for the real-time clock.
It is recommended that the battery be removed if the DGC-2020HD is
to be operated in a salt-fog environment. Salt-fog is known to be
conductive and may short-circuit the battery.
LCD Heater
DGC-2020HDs with the default monochrome LCD option (style xNxxxxxxx) are equipped with an LCD
heater. The ambient temperature is monitored by a temperature sensor located near the LCD inside the
DGC-2020HD. The LCD heater turns on when the ambient temperature falls below –5°C (23°F). The
heater turns off when the ambient temperature rises above 5°C (41°F). This range of operation
implements 10°C (18°F) of hysteresis between when the heater turns on and turns off.