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HB7 Tech Notes

Cross talk on left channel of HB7


Product: HB7
Version: All
Date Added: 2003-01-10


When two channels are used for high voltage, high frequency signals, the left channel may exhibit up to 45 dB cross talk from the right channel.


For high voltage, high frequency signals use only one channel per HB7, grounding the second channel.

HB7 AC/DC switch reversed


Product: HB7
Version: Serial numbers < 2000
Date Added: 2002-08-15


On HB7 devices with serial number < 2000 the AC/DC switch is reversed.


The AC/DC switch on HB7 devices with serial number greater than 2000 has been corrected. There is no need to replace older devices, but customers should be aware that the switch is reversed.