Looking for the input level for the 10mhz reference input on the Anan 7000dle?
Keith, KV5J
10 MHZ reference input level for the Anan 7000dle
Re: 10 MHZ reference input level for the Anan 7000dle
Don't know what the design level is, but a TTL square wave works fine here.
73, Bryan W4WMT
73, Bryan W4WMT
Re: 10 MHZ reference input level for the Anan 7000dle
What reference level are you using?
Keith,KV5J
Keith,KV5J
Re: 10 MHZ reference input level for the Anan 7000dle
All: I have deleted most of this topic because it has become a non-technically relevant, public slagging match. The answer appears in the topic at the link I provided.
In the interest of keeping the slagging stopped, the specific post in the topic that has the answer is:
https://apache-labs.com/community/viewtopic.php?f=17&t=2499&start=60#p5969
And the quote from that post is:
"With respect to appropriate input levels for an external reference, I find that anything between +7 and +13dBm works. Below +7 I've observed inconsistent performance. Levels above +13dBm could put the input differential amplifier circuit at risk for damage."
Note that is as measured into a 50 Ohm impedance.
In the interest of keeping the slagging stopped, the specific post in the topic that has the answer is:
https://apache-labs.com/community/viewtopic.php?f=17&t=2499&start=60#p5969
And the quote from that post is:
"With respect to appropriate input levels for an external reference, I find that anything between +7 and +13dBm works. Below +7 I've observed inconsistent performance. Levels above +13dBm could put the input differential amplifier circuit at risk for damage."
Note that is as measured into a 50 Ohm impedance.
Re: 10 MHZ reference input level for the Anan 7000dle
My Trimble Thunderbolt puts out a +12.3 dbm sine wave into 50 ohms.
It would be obviously much higher if unterminated.
The reference input to the Orion board is unterminated and I installed a jumper strap on JP22, (50 ohm termination) to keep the input level from being too high and possibly causing any damage to the squaring circuit.
Don
It would be obviously much higher if unterminated.
The reference input to the Orion board is unterminated and I installed a jumper strap on JP22, (50 ohm termination) to keep the input level from being too high and possibly causing any damage to the squaring circuit.
Don
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