Milan Technology RS485-CF-0x 用户手册
FAULT ISOLATION and CORRECTION
If the Media Converter fails, isolate and correct the failure by determining the
answers to the following questions and then taking the indicated action:
answers to the following questions and then taking the indicated action:
1.
Is the P(o)w(e)r LED on the Media Converter illuminated?
NO
NO
•
Is the power adapter the proper voltage and cycle frequency for the
AC outlet?
NOTE: Refer to the “Power Supply Requirements” on page 7.
AC outlet?
NOTE: Refer to the “Power Supply Requirements” on page 7.
•
Is the power adapter properly installed in the Media Converter and in
the grounded AC outlet?
the grounded AC outlet?
•
Does the grounded AC outlet provide power?
•
Contact Technical Support at (800) 260-1312.
YES
•
Proceed to step 2.
2.
Is the RXF LED illuminated?
NO
NO
•
Disconnect and reconnect the fiber cable to restart the initialization
process.
process.
•
Contact Technical Support: (800) 260-1312.
YES
•
Proceed to step 3.
3.
Is the RXC LED illuminated?
NO
NO
•
Disconnect and reconnect the copper cable to restart the
initialization process.
initialization process.
•
Restart the terminal device(s) to restart the initialization process.
•
Contact Technical Support: (800) 260-1312.
YES
•
Proceed to step 4.
4.
Does the data fail to move across the link, even though both
LEDs are illuminated?
YES
LEDs are illuminated?
YES
•
Check the RS-485/RS-422 cables for proper configuration and
connection.
connection.
•
Contact Technical Support at (800) 260-1312.
5
CABLE SPECIFICATIONS
Fiber Cable
MULTIMODE
Fiber Optic Cable Recommended:
62.5 / 125 µm multimode fiber
Optional:
100/140, 85/125, 50/125 µm mm fiber
Wavelength:
850 nanometers
RS485-CF-01, RS485-CF-01(SC), RS485-CF-02, RS485-CF-02(SC):
Fiber Optic Transmitter Power:
Fiber Optic Transmitter Power:
min: -16.0 dBm
max: -10.0 dBm
Fiber Optic Receiver Sensitivity:
min: -32.0 dBm
max: -7.2 dBm
Link Budget:
16.0 dB
Typical Maximum Cable Distance**:
2 kilometers
SINGLEMODE
Fiber Optic Cable Recommended:
9 µm singlemode fiber
Wavelength:
1300 nanometers
RS485-CF-01(SM), RS485-CF-02(SM)
Fiber Optic Transmitter Power:
Fiber Optic Transmitter Power:
min: -23.0 dBm
max: -14.0 dBm
Fiber Optic Receiver Sensitivity:
min: -34.0 dBm
max: -14.0 dBm
Link Budget:
11.0 dB
Typical Maximum Cable Distance**:
20 kilometers
**Actual distance dependent upon physical characteristics of network installation.
RS-485/422 Copper Cable
Gauge
24 to 22 AWG
Attenuation
20 dB/1000’ @ 10 MHz
Differential Characteristic Impedance
100
Ω ±10% @ 10 MHz
Maximum Cable Distance varies by baud rate: 4000ft[1220M] at <90kbaud
decreasing logarithmically to 300ft[92M] at 500kbaud).
decreasing logarithmically to 300ft[92M] at 500kbaud).
RS-485/422 DB-9 SIGNALS
RS-485/422 TERMINAL BLOCK SIGNALS
RS485-CF-0x
6
Not Used
Not Used
Not Used
Receive (+) (A) RS-485 4-wire, (+) RS-422
Not Used
Not Used
Not Used
Protective Ground
Transmit/Receive (-) (B) RS-485 2 or 4-wire, (-) RS-422
1
Signal Ground
5
Receive (-) (B) RS-485 4-wire, (-) RS-422
4
3
Transmit/Receive (+) (A) RS-485 2 or 4-wire, (+) RS-422
2
6
7
8
9
Ground
Ground
Receive (-) RS-485 4-wire, RS-422
Receive (+) RS-485 4-wire, RS-422
Transmit/Receive (-) (B) RS-485 2-wire, (-) RS-422 Transmit
6
2
3
4
5
1
Transmit/Receive (+) (A) RS-485 2-wire, (+) RS-422 Transmit