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ACC Input Level

Mark Erbaugh
Mark Erbaugh Member ✭✭
edited June 2020 in FLEX-6000 Signature Series
I think I asked this once before years ago, but I can't find the thread.

I am trying to drive the line input on the 15-pin ACC port of the 6700, with a USB soundcard (actually, a Timewave Navigator interface). According to the specs, the output level is 410 mV into a 4.7 kOhm load. The most input level I can show on the 6700 is under -10dB, which isn't enough to drive the transmitter. I think the difference may be due to the fact that the line in is set for Pro audio at +4dBV instead of consumer audio at -10dBV. Is there anything I can do to increase the line in gain?  FWIW, the line output signal work fine into the Navigator's soundcard.

Comments

  • Mark Erbaugh
    Mark Erbaugh Member ✭✭
    edited February 2020
    Okay, I reread the documentation and it appears that the line in is actually consumer level at -10 dbV. I used my scope to measure the signal coming from the Navigator and it is +/- 600 mV which seems to be within the consumer output level. Why am I not able to drive my Flex transmitter?
  • K0FLY
    K0FLY Member ✭✭✭
    edited July 2019
  • Mark Erbaugh
    Mark Erbaugh Member ✭✭
    edited February 2020
  • Mark Erbaugh
    Mark Erbaugh Member ✭✭
    edited February 2020
  • Bill Wuttke KE3BK
    Bill Wuttke KE3BK Member ✭✭
    edited June 2020

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