NetWave DirectView Broadcast Console Operations & Technical Manual
Revision A
5 – NetWave Servicing
Harris Broadcast
5-7
PR&E
Clock Troubleshooting
If the clock’s colons are blinking, it indicates the clock has lost its ESE or SMPTE master timecode signal.
This signal plugs into a Molex connector on the rear chassis, which goes to J4 on the clock-timer board. If
the clock is supposed to be running in autonomous mode, verify that DS4 switch 2 and DS4 switch 5 are
both set off. The Setting the Clock subsection in Section 2 gives information on the clock and DS4 switch
settings.
Even though the ESE/SMPTE master clock input is balanced, the polarity of the incoming signal is important.
If it is reversed, the master clock signal is not detected. The + or hot lead must connect to pin 1 of the
Molex connector and the - or shield lead must connect to pin 2. If you use a balanced cable, no shield
connection is required.
Event Timer Troubleshooting
If the tenths of seconds display is not functioning as expected, check the multi-switch setting on the clock-
timer circuit board. DS4 switch 1 sets whether the tenths of seconds are displayed while the event timer is
running. The tenths of seconds are always displayed while the event time is in Hold or Stop modes.
If the event timer does not auto-reset as expected, make sure the Auto button is lit on the Monitor Control
panel and that the channel setup parameter Timer Reset is active (its LED is lit) on those channel sources
that should be resetting the event timer.
Meter Troubleshooting
The meter-clock-timer cable (plugged into J6) goes to the Monitor & Output board, plugging into J23. If the
display is unlit, it is most likely a cabling issue. Try these guidelines:
1.
Remove the rear cover of the display and unplug the cable from J6, then plug the cable back in. This
cable can be “hot plugged” so that the meter can be checked without powering down the console.
2.
If the display is still unlit, try power cycling the console to reset the Monitor & Output card.
3.
If the display is still unlit, remove the display subassembly and check the other end of the cable
(plugged into J23 on the Monitor & Output board).
Also check that multi-switch DS3, on both the meter-clock-timer and two-meter boards in a Quad Meter,
are all set fully to their ON or OFF positions. The default setting is all DS3 switches set to OFF.
48-Volt Supplies
Periodically check that the vent openings on the 99-1205 rackmount supply are not blocked and that there is
no dust buildup on the top cover openings. On the 99-1206 in-line supply, periodically check that it is not
covered up by any materials like cable bundles, papers, insulation, etc. It relies on a free air flow around it
to keep it cool.
A green LED, on the front of the rackmount or on the top of the in-line power supply, indicates that its 48-
volt DC output is good.
Warning! To reduce the risk of electric shock, do not disassemble the power supply. Refer
servicing to qualified service personnel.
Power Supply Connections
The in-line supply (99-1206) has a captive DC output cable, while the rackmount supply (99-1205) has a
detachable DC cable. Both use the pin-outs (Table 5-5 and Figure 5-4) for the 90-1858-1 cable, which is the
interconnection cable that goes from the 99-1205 supply to the NetWave console.
