Basler BE1-CDS220, Instruction Manual

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12-28 Installation BE1-CDS220
06-23-00
D2839-04
22
6
4
A
B
C
3 POSITION TB DB-37 FEMALE
TO BE1-CDS TO RS-422/RS-485
19
24
C
B
A
A
B
C
4000'
MAX.
COM 2
BE1-CDS
BE1-CDS
COM 2
BE1-CDS
COM 2
R
t
t
R
R = OPTIONAL TERMINATING
t
RESISTOR (120 OHMS TYP.)
A
5
D5
D4
D3
D5
D4
D3
D5
D4
D3
Figure 12-32. RS-485 DB-37 to BE1-CDS220
IRIG Input and Connections
The IRIG input is fully isolated and supports IRIG Standard 200-98, Format B002. The demodulated (dc
level-shifted) input signal must be 3.5 volts or higher to be recognized as a high logic level. The maximum
acceptable input voltage range is +10 volts or -10 volts (a 20 volt range). Input burden is nonlinear and
rated at approximately 4 k
Ω
at 3.5 Vdc and approximately 3 k
Ω
at 20 Vdc.
IRIG connections are located on a terminal block shared with the RS-485 and input power terminals.
Terminal designations and functions are shown in Table 12-4.
Table 12-4. IRIG Terminal Assignments
Terminal Function
D1 (+) Signal
D2 (-) Reference