Basler Electric DGC-2020ES - Manual (Page 189)

9469200990 Rev C 181
Notes
1. If the DGC-2020ES is providing one end of the J1939 bus, a 120
Ω, ½ watt
terminating resistor should be installed across terminals 14 (CANL) and 13
(CANH).
2. If the DGC-2020ES is not part of the J1939 bus, the stub connecting the
DGC-2020ES to the bus should not exceed 914 mm (3 ft) in length.
3. The maximum bus length, not including stubs, is 40 m (131 ft).
4. The J1939 drain (shield) should be grounded at one point only. If
grounded elsewhere, do not connect the drain to the DGC-2020ES.
Real-Time Clock
Clock has leap year and selectable daylight saving time correction. Backup capacitor and backup battery
sustain timekeeping during losses of DGC-2020ES operating power.
Resolution ........................................ 1 s
Accuracy...........................................
±1.73 s/d at 25°C
Clock Holdup
Battery Holdup Time ........................ Approximately 10 yrs
Liquid Crystal Display (LCD)
Display ............................................ 128 by 64 dot pixels LCD with LED Backlight
Operating Temperature .................... –40 to +70
°C (–40 to +158°F)
Storage Temperature ....................... –40 to +80
°C (–40 to +176°F)
LCD Heater
The ambient temperature is monitored by a temperature sensor located near the LCD inside the DGC-
2020ES. The LCD heater turns on when the ambient temperature falls below 0
°C (32°F). The heater turns
off when the ambient temperature rises above 5
°C (41°F). This range of operation implements 5°C (9°F)
of hysteresis between heater turn-on and turn-off.
Type Tests
Shock and Vibration ......................... EN60068-2-6
Dielectric Strength ............................ IEC 255-5
Impulse ............................................ EN60664-1
Transients......................................... EN61000-4-4
Static Discharge ............................... EN61000-4-2
Shock
Withstands 15 G in three perpendicular planes.
Vibration
Tested in three mutually perpendicular planes for 8 hours over the following ranges:
3 to 25 Hz at 1.6 mm (0.063 inches), peak amplitude
25 to 2,000 Hz at 5G
DGC-2020ES Specifications