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WARSANIS 1401FM USER MANUAL
CHANGING THE COMPOSITE OUTPUT IMPEDANCE
The Warsanis 1401FM is shipped with a composite output impedance op 0ohm. This
is the common impedance for most situations. If a 75ohm output impedance is
required you have to change two jumpers on the Stereo Generator PCB. Make sure
you have disconect the power before changing the jumpers. The two composite
outputs can be independently switched for 0ohm or 75ohm operation. For more
information see Fig. Stereo Generator at the end of this manual.
SCA INPUT
The stereo generator has an 600ohm unbalanced SCA input. The SCA will be mixed
into each composite output. 1,5V peak at the subcarrier input BNC produces 10%
subcarrier injection with reference of 100% modulation of the FM carrier independent
of the level output control.
19kHZ OUTPUT
A 19kHz output (TTL) is available at a RCA connector at the rear side for synchroniz-
ing an external subcarrier generator like RDS to the 19kHz pilot tone.
19kHZ CRYSTAL OSCILLATOR
Although the 19kHZ pilot tone of the stereo generator is very stable, it is possible to
replace the standard crystal with a crystal oscillator which will give you a stability of
1ppm (part per million). The crystal must be carefully removed from the PCB and one
jumper must be changed for operation with an crystal oscillator. Frequency: 2.432
Mhz
A factory kit with a crystal oscillator and installation instructions is available. Contact
your local dealer for further information.
UNBALANCED ANALOG USAGE
INPUT:
OUTPUT:
GROUNDING
Always use the supplied grounded power cord. Never defeat the earth ground. The
earth ground prevents ground loops, hum and assured safety. Measure the resis-
tance between the chassis and earth ground to verify that it is less than 0,5 ohm. A
RFI suppression filter is installed in the unit. No ground lift switch is available. To lift
the ground from the unit remove the conection between the RFI suppresion filer and
the chassis inside the unit.
FUSES
The value of chassis fuse for 230V usage: 250mA / Slow Blow
The value of chassis fuse for 115V usage: 350mA / Slow Blow
The value of the power PCB fuse: 1A / Fast Blow
Replace only with the same value!
If you want to connect unbalanced equipment to the input of the
Warsanis 1401FM connect PIN3 to ground.
If you want a unbalanced output use PIN2 as >HOT= and leave PIN3
unused. Do not connect PIN3 to Ground!!
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