NewsCaster VT2 Operation
M17-0002-01A Rev 0.0 67 User Manual
NewsCaster VT2 Alarms (continued)
Alarm Message Problem Probable Cause/Troubleshooting
NO RF HEAD The controller is not communicating
with the RF Head.
1. Ensure that the Nycoil Cable is shorter than 200
feet and that the correct cable type is being used.
2. Check interconnect cables.
3. Disconnect cable from RF Head and measure the
voltage between the center pin of the connector
and the shield. The voltage should read
44 VDC - 48 VDC.
a. If the voltage is not present, disconnect the
cable from the control drawer and check the
voltage between the center pin and the
chassis for 44 VDC - 48 VDC. If present,
the cabling is bad.
4. Disconnect the Antenna Polarization and P&T
connector (if installed) and reboot the radio. If
this resolves the problem:
a. Check antenna type selection and ensure the
proper setting: Nucomm or NSI.
b. Check Polarization connector termination.
c. If new installation, check pin-outs.
PSU: Voltage Error PSU voltage regulation or amplitude
level of +12 VDC beyond acceptable
range.
1. Check input and output of PSU with Multimeter
under load and without load. Will indicate if
supply is bad or there is a loading problem.
2. Consult with factory.
RF: +5V Error
or
RF: +12V Error
or
RF: +12V Pwr Amp Err
or
RF: +24V Error
or
RF: +45V Error
RF Head Power Amp +12 VDC out
of acceptable range.
1. Disconnect the Antenna Polarization and P&T
connector (if installed) and reboot the radio. If
this resolves the problem:
a. Check the antenna type selection and ensure
the proper setting: Nucomm or NSI.
b. Check Polarization connector termination.
c. If new installation, check cable pin-outs
2. Check Coax cable connectors. Refer to “NO RF
HEAD” troubleshooting measures.
RF Head: I2C Error The controller is not communicating
with the RF Head.
1. Ensure that the Nycoil Cable is shorter than 200
feet and that the correct cable type is being used.
2. Check interconnect cables.
3. Disconnect cable from RF Head and measure the
voltage between the center pin of the connector
and the shield. The voltage should read
44 VDC - 48 VDC.
a. If the voltage is not present, disconnect the
cable from the control drawer and check the
voltage between the center pin and the
chassis for 44 VDC - 48 VDC. If present,
the cabling is bad.
4. Disconnect the Antenna Polarization and P&T
connector (if installed) and reboot the radio. If
this resolves the problem:
a. Check antenna type selection and ensure the
proper setting: Nucomm or NSI.
b. Check Polarization connector termination.
c. If new installation, check pin-outs.
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