[time-nuts] Lucent RFTG-M-XO reference question
kc0vsj at yahoo.com
Mon May 21 11:27:21 EDT 2007
Before I go and spend $150 on eBay for one - I would
like to know if they can be used as a stand-alone GPS
desciplined oscillator without the 10mhz input from
the rubidium unit.
Also - has anybody found a manual on-line for one of
73 - Tom in St. Louis
There was an older posting from Oct 2005 describing
the RFG-M unit:
The board you are describing is used in the Lucent
RFG-M-XO reference frequency generator. It takes in 10
MHz on J2 from a Rubidium oscillator and disciplines
the Efratom SC cut OCXO on the main board from the 10
The output from the OCXO is converted to 15 MHz and
supplied as the reference output on J4.
The RFG-M-RB and RFG-M-XO normally mount together in a
chassis (which I didn 't get) and the modules are
connected to the chassis by a harness with a DB15 on
the chassis end. The pin out for the harness is as
DB15M TO/Pin# Description
1 RFG0 - P1-1 +24v 1.3A/0.6A
2 RFG0 - P1-2 Common
3 RFG1 - P1-1 +24v 0.6A/0.4A
4 RFG1 - P1-2 Common
10 RFG0 - J3-1 Alarm
11 RFG0 - J3-2 Alarm
12 RFG1 - J3-1 Alarm
13 RFG1 - J3-2 Alarm
A second interface cable ties the RB to the XO as
Pin # Pin#
The male DB9 is P1 and pin 1 = +24v @ 400ma, Pin 2 =
Common. This will power
up the board so you can verify operation of the OCXO.
Unfortunately that is
all the information I have on the unit.
Hope this helps.
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