19 April 2005
Specification for crystal filter:
1. General
1.1. Case:
QF 70.0-8000/02
1.2.
1.3.
1.4.
1.5.
2.
2.1.
2.2.
2.2.1.
2.2.2.
2.2.3.
2.3.4.
2.3.5.
2.2.6.
2.3.
Type name:
Number of poles:
Operating temperature range:
Storage temperature range:
Electric values
Nominal centre frequency fo:
Pass band
Bandwidth between 3 dB - frequencies:
Ripple in the range fo
±
40 kHz:
Group delay at fo:
Group delay absolute at fo:
Group delay distortion in the range fo
±
40 kHz
Insertion loss:
( measured on smallest attenuation in pass band )
Stop band
QF 70.0-8000/02
2
-40°C to +85°C
-45°C to +85°C
70.0 MHz
> fo
±
40 kHz
Gaussian
< 6 µs
4.5 µs
±
1 µs
< 1 µs
< 4 dB
2.3.1. fo
±
400 kHz
2.3.2. Alternate attenuation:
2.4.
3.
Terminating impedance ( input and output ):
Marking on the case:
≥
30 dB
≥
40 dB ( except spurious )
50
Ω
// 0 pF
firm, year week
QF 70.0-8000/02
4.
Environment conditions:
Corresponding to Telefilter CF001
_______________________________________________________________________________________
Edited by:
date: _________________
Name: __________________________
VECTRON [ Vectron International, Inc ]
