IRIG-E Problems If there is a problem with the IRIG-E on tape, The first place to look is to the generator circuits of the clock. To do this, monitor channel 10 in direct with both transports stopped. A good IRIG-E signal should be observed on the VU meter and should produce a drumbeat sound. If these indications are ok, you will next observe the LED clock readout for 10-15 sec. for a proper counting sequence. If the clock is not counting properly, a fault may lie in the SG-1064 reader circuitry.