User Manual
UM-20 Low-cost Oven-controlled Crystal Oscillator (OCXO) Assembly
15
Module Applications at Pumpkin
Multiple Rev A PCBs were assembled with used OCXO131-40s;
their applications are below.
7
Pumpkin
S/N
IsoTemp
S/N Application
Notes
101 1946-88
XL Microwave 3030
S/N 950823357
n/a 2140-395
102 2140-618 not
installed
First unit to be assembled; trimpot
and precision resistor remain
unpotted.
103 2140-624
SRS DS345
S/N 32542
104 2302-1000
SRS DS345
S/N 30029
Wired for 7-pin connector to U1
(factory OCXO).
Use cal byte 0 to tune – nominal
value is 2980.
105 4231-0013 not
installed
Table 4: Applications of Rev A OCXO Modules
Two applications of the OCXO Module are expanded upon below.
7
An XL Microwave Model 3120 with a GPS DO 10MHz external reference was
used for the frequency measurements; a Fluke 289 DMM was used for the
V_TRIM
measurements; an Agilent E3620A provided the
V_TRIM
voltage
and
12Vdc power.
Содержание UM-20
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