MultiDyne SMPTE-HUT - Manual (Page 8)

SMPTE HUT Manual 10/15/2014
Multidyne Electronics Inc.
8
2. Base (CCU side) Unit
The Base unit, known as HUT-CCU, has a SMPTE hybrid receptacle panel mount connector
for connection to the CCU and 2 ST/UPC or duplex LC connectors for the fibers to the CAM
HUT. The base unit is shown here in Fig. 4 with ST connectors As on the CAM HUT, the ST
or LC connectors are labeled either FROM CCU and TO CCU or A and B. The same
considerations concerning the fiber labels should be observed, as on the CAM HUT.
Fig. 4: Base Unit
The HUT-CCU acts as a breakout for the optical ports in the CCU SMPTE connector. It also
tricks the CCU into thinking a camera is attached by a SMPTE hybrid fiber cable. This is
necessary to enable the CCU to leave standby mode so that it can accept video from the
camera. It has 2 LEDs located on the panel with the ST connectors, labeled Power and HV.
The Power LED is green when the CCU is supplying power to the HUT-CCU, and the HUT-
CCU is attempting to spoof the CCU. The HV LED is green when the CCU is supplying high
voltage. This means that the HUT-CCU has successfully spoofed the CCU into thinking a
camera is attached. Otherwise, the CCU will not leave standby mode. The HUT-CCU comes
configured for use with Sony, Hitachi, or Ikegami CCUs. However, the Ike CCUs need to be
configured for “single fiber mode” to work with the HUT-CCU in its default configuration,
otherwise the Ike CCU will report an open cable and will not leave standby mode. Note that
the HV LED on the HUT-CCU will remain off in single fiber mode, even during normal
operation.