Basler Electric DGC-2020HD - Manual (Page 23)

9469300990 Rev B 13
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
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 heater turn on and turn off.
Type Tests
Shock
Withstands 15 G in 3 perpendicular planes.
Vibration
Tested for 8 hours in three perpendicular planes.
3 to 25 Hz ......................................... at 1.6 mm (0.063 in) peak amplitude
25 to 2,000 Hz .................................. at 5 G
HALT (Highly Accelerated Life Testing)
HALT is used by Basler Electric to prove that our products will provide the user with many years of
reliable service. HALT subjects the device to extremes in temperature, shock, and vibration to simulate
years of operation, but in a much shorter period span. HALT allows Basler Electric to evaluate all possible
design elements that will add to the life of this device. As an example of some of the extreme testing
conditions, the DGC-2020HD was subjected to temperature tests (tested over a temperature range of
–85°C to +120°C), vibration tests (of 5 to 40 G at +30°C), and temperature/vibration tests (tested at 40 G
over a temperature range of –85°C to +120°C). Combined temperature and vibration testing at these
extremes proves that the DGC-2020HD is expected to provide long-term operation in a rugged
environment. Note that the vibration and temperature extremes listed in this paragraph are specific to
HALT and do not reflect recommended operation levels.
Ignition System
Tested in close proximity to an unshielded, unsuppressed Altronic DISN 800 Spark Ignition System.
Environment
Operating Temperature .................... –40 to +70
°C (–40 to +158°F)
Storage Temperature ....................... –40 to +85
°C (–40 to +185°F)
DGC-2020HD Specifications