[time-nuts] HP-10811AB-OCXO interface questions

[Lester Veenstra]

Ordered a bunch of these to test against the TAPR device
https://www.aliexpress.com/item/4001231758949.html?spm=a2g0s.9042311.0.0.151
84c4d1hMhZs
TLV3501 Single Chan High Speed Comparator Frequency Meter Front Shaping
Module DC 2.7-5V Frequency Counter SMA
Specifications:

Supply voltage: 2.7-5VDC
Input voltage: 8-1000mV (effective value)
Output level: rail to rail output, can directly TTL / CMOS level
Input frequency: 1Hz-120 MHz, Min.1Hz

shape: SMA female head (external screw hole)
Input impedance: 20 K ohm
 Product Use:
Sine wave
The zero crossing comparator
comparator
Colour:green
Material:metal
Size:about 5*2.5cm

Lester B Veenstra  K1YCM  MØYCM  W8YCM   6Y6Y
lester at veenstras.com

452 Stable Ln (HC84 RFD USPS Mail)
Keyser WV 26726

GPS: 39.336826 N  78.982287 W (Google)
GPS: 39.33682 N  78.9823741 W (GPSDO)


Telephones:
Home:                     +1-304-289-6057
US cell                    +1-304-790-9192 
Jamaica cell:           +1-876-456-8898 
 


-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at lists.febo.com] On Behalf Of Mike
Feher
Sent: Wednesday, September 02, 2020 10:01 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] HP-10811AB-OCXO interface questions

I remember the days when we had to build our own discrete Schmitt trigger to
do this. 73 - Mike 

Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
848-245-9115

-----Original Message-----
From: time-nuts <time-nuts-bounces at lists.febo.com> On Behalf Of Bruce
Griffiths
Sent: Wednesday, September 2, 2020 1:46 AM
To: Discussion of precise time and frequency measurement
<time-nuts at lists.febo.com>
Subject: Re: [time-nuts] HP-10811AB-OCXO interface questions

For sine to square wave conversion use LTC6957 (select variant to suit
following logic).


Bruce



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