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sensibilité d'entrée
Impédance
Max. tension d'entrée
Entrée "B"
Plage de fréquence
Résolution
sensibilité d'entrée
Impédance :
Max. tension d'entrée
Entrée "C"
Plage de fréquence
Résolution
sensibilité d'entrée
Impédance
Max. tension d'entrée
Exactitude de la
fréquence
46
: 50 MHz à max. 75 MHz => <100 mV
> 75 MHz à 2500 MHz => < 50 mV
: 1 MOhm parallèle à < 40 pF
: 5 Vpp sinusoïdal
: 10 MHz à 500 MHz
: 10 Hz (Gate Time sur "SLOW") à
100 Hz (Gate Time sur "FAST")
: 10 MHz à 35 MHz => < 120 mV
>35 MHz à < 350 MHz => < 50 mV
> 350 MHz à 500 MHz => < 120 mV
50 Ohm
: 5 Vpp, sinusoïdal
: 10 Hz à 10 MHz
: 1 Hz (Gate Time sur "SLOW") à
10 Hz (Gate Time sur "FAST")
: 10 Hz à 10 MHz => < 50 mV
(mesure de la fréquence)
< 50 mV (Mesure de la durée de
période)
: 50 Ohm
: 88 Vrms = 88 Veff, sinusoïdal
: ±( 4ppm + 1d) pour CH A, B et C;
à 23°C ±5K, après calibrage
(K = Kelvin; d = digit)
- after prolonged storage under unfavourable conditions, or
- after it was exposed to extraordinary stress caused by transport.
Installation, commissioning
A basic adjustment, general
a1 Do not operate the device in extremely cold or hot places, in
vehicles during summer, near fan heaters.
a2 Do not expose the device to direct insolation. The display
becomes black at temperatures over approx. 60°C (no longer
readable). Only after corresponding cooling (in the shadow) the
display becomes visible again.
a3 Never turn on the device immediately after it has been brought
from a cold into a warm room. Condensation water that forms
might destroy your device. Leave the device switched off and
wait until it has reached room temperature.
a4 Do not operate the device in the direct vicinity of hot soldering
irons.
a5 Do not place the device with the control panel side down as
this may cause misadjustments.
a6 If signal sources with BNC outputs are to be connected to the
corresponding counter input (A, B or C), a coaxial cable is
usually used for this connection. These cables are screened,
i.e. the inner signal-conducting wire is shielded against external
disturbance signals through a network of copper wires or tin-
coated copper wires. This protective screen is generally
connected to the earth of the signal source or of the counter. If
you want to measure signals to devices or modules of electro-
nic circuits, use a coaxial cable for this purpose that has a male
BNC connector at one end and is open at the other end. The
open ends are fitted with alligator clips.
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