Model 5601MSC
Model 5601MSC Master SPG/Master Clock System
Page - 176
Revision 2.2
TECHNICAL DESCRIPTION
5.3.3. Troubleshooting Issues
This section contains tips on common issues that can be encountered when operating a 5601MSC
system. Please consult the issues listed here to see if you can resolve your problem before contacting
customer service. Evertz customer support is available at +1 905 335 7570, or
5.3.3.1. Intermittent Errors on Devices Connected to the SDI Test Generator Outputs (SD/HD/3G)
Errors are being reported on the SDI test generator outputs such as CRC or EDH errors, which possibly
manifest as flicking in the video. They may also manifest as loss of video lock:
1. Check that
highdrive
is disabled (see section 0). Highdrive must only be enabled when the
5601MSC is connected to a 5601ACO2 automatic changeover unit. In all other cases highdrive
should be turned off. The higher amplitude SDI output can cause problems with equipment not
designed to handle it and may cause problems from occasional errors to complete loss of lock in
such devices.
2. If the unit is configured to lock to video or 10MHz and the
Genlock Range
control is set to
Wide
mode, verify that the unit is locked to a stable reference. See section 2.2.3. The Wide oscillator
is capable of locking or freerunning at frequencies beyond ±10ppm from nominal. This may
cause problems with receivers on some equipment.
5.3.3.2. GPS Related Issues
5.3.3.2.1.
GPS Receiver Problems – GPS Disconnected Status
The GPS receiver is connected to the 5601MSC, but the status screen reports “GPS Disconnected”:
1. This indicates no communication with the GPS head. This could indicate a bad cable. Check
that all connections are secure. Check the wiring of the GPS antenna cable (see section 3.5.2).
The GPS head may not be g12V power from the 5601MSC, or the RS422 Tx and Rx
pins are miswired. Verify that none of the wires are pinched or broken inside the DB9 backshell.
5.3.3.2.2.
GPS Receiver is Reporting Good Status, but the 5601MSC Does Not Fully Lock
The 5601MSC is reporting in the Lock Status screen a low lock progress that never goes higher than
50%.
1. This indicates good RS422 communication with the GPS receiver, but a possible problem in the
1pps signal pins. If an extension cable is being used, check that the cable is not damaged, of
good quality, and is wired correctly.
2. If the unit is in
Slow
lock mode, the unit could be correcting for a shift in the reference. This can
happen if the GPS lock has been lost for a prolonged period of time. A manual jam to the
frequency reference may be required. Refer to section 2.2.4 for more information.
Содержание 5601MSC
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