Milan Technology RS485-CF-0x - Manual (Page 3)

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:
1. Is the P(o)w(e)r LED on the Media Converter illuminated?
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.
• Is the power adapter properly installed in the Media Converter and in
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
• Disconnect and reconnect the fiber cable to restart the initialization
process.
• Contact Technical Support: (800) 260-1312.
YES
• Proceed to step 3.
3. Is the RXC LED illuminated?
NO
• Disconnect and reconnect the copper cable to restart the
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
• Check the RS-485/RS-422 cables for proper configuration and
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:
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:
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).
RS-485/422 DB-9 SIGNALS
RS-485/422 TERMINAL BLOCK SIGNALS
RS485-CF-0x 6
Not Used
Not Used
Receive (+) (A) RS-485 4-wire, (+) RS-422
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