MultiDyne SMPTE-HUT - Manual (Page 4)

SMPTE HUT Manual 10/15/2014
Multidyne Electronics Inc.
4
There are 3 versions of the CAM HUT, and each has its own front panel. These are shown
in Fig. 2. The basic configuration, which is the first panel, is to have the SMPTE hybrid fiber
connector to the camera and the 2 ST/UPC or duplex LC fiber connectors populated on the
front panel. These are labeled A and B.. Optionally, the optical connectors can be located
on the rear panel instead, as shown in Fig. 3. On some camera systems, A could mean
FROM CCU and B could mean TO CCU or vice-versa. In systems with the optional optical
repeater, it is important that the user be sure that his uplink and downlink signals are
matched to the proper connectors consistently throughout the link. In the basic system,
without optical repeating, it does not matter whether A or B is from the CCU or to the CCU,
since the fiber path is entirely passive. It only matters that, for a given direction, the same
label is used throughout the entire link.
The front panel of the basic unit has the following standard features:
RESET: This button resets a 2A thermal circuit breaker in series with the SMPTE hybrid
connector output. In the event of an overcurrent fault that causes power to the cam to be
removed, as evidenced by the HV PRES LED being dark, and the button popped out.
Pressing this button restores power after the fault is removed. Note that RESET does not
restore functionality if a SMPTE cable fault exists.
SMPTE CABLE Status LEDs:
SHORT glows red upon short or leakage of hybrid fiber cable to ground. Upon power up,
this LED may glow red for a few seconds even if no short exists. This is normal.
OPEN glows red when cable is open or cam not connected. If using a Hitachi camera, be
sure to set the CAM TYPE switch to the Hitachi position, to bypass the OPEN cable test.
Otherwise, it will always fail. For Sony or Ike, set switch for those cameras.
OK glows green indicating a properly connected hybrid fiber cable.
HV ENAB glows green when the HUT attempts to apply 230VAC to the hybrid fiber cable.
This occurs only after all cable checks have been completed successfully.
HV PRES glows green when 230VAC is actually present on the hybrid cable. If HV ENAB is
green but HV PRES is off, check to see if the circuit breaker has been tripped. If so, the
RESET button may need to be pressed after removing the fault. Otherwise, there could be a
failure of either the HUT relays or power transformer, and the HUT will require service.
CAM TYPE: Selects between Hitachi and Sony/Ikegami cameras.