Real-Time Clock - Basler DGC-2020 Instruction Manual

RS-485 (Optional)
Baud:
Data Bits:
Parity:
Stop Bits:
Terminals:
CANBus
Differential Bus Voltage:
Maximum Voltage:
Communication Rate:
Terminals:
1.) If the DGC-2020 is providing one end of the J1939 backbone, a 120 Ω
terminating resistor should be installed across terminals 48 (CANL) and 49
(CANH).
2.) If the DGC-2020 is not part of the J1939 backbone, the stub connecting the
DGC-2020 to the backbone should not exceed 914 mm (3 ft) in length.
3.) The J1939 drain (shield) should be grounded at one point only. If grounded
elsewhere, do not connect the drain to the DGC-2020.
Modem (Optional)
Connector Type:

Real-Time Clock

Clock has leap year and selectable daylight saving time correction. Backup capacitor and optional backup
battery sustain timekeeping during losses of DGC-2020 operating power.
Resolution:
Accuracy:
Clock Holdup
Battery Holdup Time (Optional):
Battery Type:
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-2020 is to be operated
in a salt-fog environment. Salt-fog is known to be conductive and may short-
circuit the battery.
Failure to replace the battery with Basler Electric P/N 38526 may void the
warranty.
9400200990 Rev I
9600
8
None
1
14 (A), 13 (B), and 12 (shield)
1.5 to 3 Vdc
–32 to +32 Vdc with respect to negative battery terminal
250 kb/s
48 (low), 49 (high), and 50 (shield)
NOTES
RJ-11 jack
1 s
±1.73 s/d at 25°C
Approximately 10 yrs
Rayovac BR2032, lithium, coin-type, 3 Vdc, 190 mAh
Basler Electric P/N 38526
CAUTION
NOTE
DGC-2020 General Information 1-9