Basler DGC-2020HD - Page 58

7-10 9469300994
Specifications DGC-2020HD
Notes
1. If the DGC-2020HD is providing one end of the J1939 bus, a 120
ohm, ½ watt terminating resistor should be installed across
terminals 51 (CAN1L) and 52 (CAN1H) or 54 (CAN2L) and 55
(CAN2H).
2. If the DGC-2020HD is not providing one end of the J1939 bus, the
stub connecting the DGC-2020HD 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-
2020HD.
5. It is recommended to upgrade the firmware in all AEM-2020s and
CEM 2020s that share a CAN bus network with a VRM-2020.
Upgrade CEM-2020s to firmware version 1.01.05 or later.
Upgrade AEM 2020s to firmware version 1.00.06 or later.
Ethernet
Dual Copper Connector ................... RJ-45, 10/100BASE-T (style number xxxxDxxxx)
Fiber Optic Connector ...................... ST, 100BASE-FX (style number xxxxFxxxx)
Fiber Optic Cable ............................. 1300 nanometer, near-infrared (NIR) light wavelength transmitted via
two strands of multimode optical fiber, one for receive (RX) and the
other for transmit (TX).
Industrial Ethernet devices designed to comply with IEC 61000-4 series of specifications are
recommended.
External Dial-Out Modem (RS-232)
Protocol ............................................ ASCII
Data Transmission ........................... Full Duplex
Baud ................................................. 4,800 to 115,200
Data Bits ........................................... 8
Parity ................................................ None
Stop Bits ........................................... 1
Connector Type ................................ DB-9 Connector (Male)
IRIG-B Time Synchronization
Standard: .......................................... 200-04, Format B002
Input Signal ...................................... Demodulated (dc level-shifted signal)
Logic High Level ............................... 3.5 Vdc, minimum
Logic Low Level ............................... 0.5 Vdc, maximum
Input Voltage Range ........................ –10 to +10 Vdc
Input Resistance .............................. Nonlinear, approximately 4 kΩ at 3.5 Vdc, 3 kΩ at 20 Vdc
Response Time ................................ < 1 cycle
Terminals.......................................... 59 (IRIG-B +), 60 (IRIG-B –)
Modbus
®
(RS-485)
Baud ................................................. 1,200 to 115,200
Data Bits ........................................... 8
Parity ................................................ None
Stop Bits ........................................... 1