| 摘要 |
PURPOSE:To make sure of VTR operation in pickup operation definitely by generating alarms corresponding to respective functions when several functions of VTR are abnormal and slso by operating an alarm method at a TV camera side connected to VTR when one of function is abnormal. CONSTITUTION:Several abnormal function of VTR1 connected to TV camera 30 are detected by RF signal detection circuit 3 for FM-modulated video signal detection, and servo, temperature, reel motor drive, tape end, power voltage, and other power voltage detection circuits 4-9, and consequently corresponding alarm lamps 11-16 come on to send an alarm. On the other hand, detection signals from circuits 3-9 are passed through OR circuit 20 to light alarm lamp 32 at a camera 30 side when one of functions of VTR1 becomes abnormal. In this constitution, the operation of VTR in pickup operation is definitely confirmed to cope with the abnormality properly, so that error recording, etc., can be prevented. |
