Safety instructions
The guarantee claim becomes invalid for damages due to non-
observance of these operating instructions! We do not assume liabi-
lity for consequential damages!
We do not assume liability for property damages or personal injuries
caused by improper use or non-observance of the safety instruc-
tions. In all such cases guarantee claims become invalid.
The Frequency Counter FC-2500 has left the factory in compliance
with all relevant safety regulations. To preserve this state and to
guarantee safe operation, the user must observe the safety instruc-
tions and warnings contained in this operating manual.
Measurement devices and their accessories must be kept out of
reach of children!
In schools, training facilities, do-it-yourself and hobby workshops,
test devices and accessories are to be used only under supervision
of trained personnel.
Take the device into operation only when the housing is safely clo-
sed and screwed down.
Never apply mains voltage to the measurement inputs. This might
destroy the device and represent a serious threat to your life. You
must observe the maximum input ratings!
If there is reason to believe that safe operation has become impos-
sible, the device must be put out of operation and must be secured
against unintended operation. It can be assumed that safe operati-
on is no longer possible,
- if the device shows visible damages
- if the device no longer works
22
Base de temps
Type
: oscillateur à quartz
Fréquence : 4,194
MHz
Coefficient de température
: 0,1 ppm par °C (type. 23°C ±5K)
Affichage numérique
Affichage
: écran 8 chiffres à cristaux liquides,
13 cm de haut. Avec les symboles
"REL" pour la valeur relative et
"R.C." pour Record = mémorisati-
on"--Hold—" (= tenir) et "---oL---"
(=Overload = surchargé)
Caractéristiques techniques générales
Alimentation en courant
: 4 x 1,5-V-piles alcalines de type AA
(=Mignon=UM3) ou transformateur
pour courant avec 9 VDC / > 300
mA, "+" intérieur (non compris)
Consommation de courant
: env. 105mA pour mesure sur canal
A ou B
env. 5 mA pour mesure sur canal C
Conditions d’environnement
Température de travail
: 0°C à +50°C (32°F à 122°F)
Humidité relative de l’air
: max. 90% (0°C à 35°C), sans con-
densation
Dimensions (LxBxH)
: env. 173 x 80 x 35 mm (sans les
câbles)
Poids
: env. 340 g (sans connexions,
avec piles)
47
