BRUEL & KJAER 2006 - Page 15

VOLTAGE RANGE: Attenuator selecting the full scale meter pointer
deflection to 50 p,V, 500 ftV, 5 mV or 50 mV. With
the HO dB Attenuator the voltage ranges will be:
50 mV, 500 mV, 5 V and 50 V. If the amplitude of
the input signal is unknown start from the 50 V
full deflection and then increase the sensitivity
until a suitable deflection is obtained on the meter .
The position "Ref." of the VOLTAGE RANGE
switch is for calibration of the instrument.
FREQUENCY RANGE: The figures engraved around this knob refer to the
different frequency meter scales and cover the
following frequency ranges:
BANDWIDTH:
" Wide":
"Narrow '':
TUNING:
1. o.l MHz- 6.0 MHz
t . 5.6 MH z- 15 .0 MHz
3. 14.5
MHz- 30 MHz
4. 29 MHz- 52 MHz
5. 48
MHz- 86 MHz
6. 82 MHz-140 MHz
7. 132
MHz--230 MHz
In the position "Wide" the 3 dB bandwidth is
± 100 kHz . This bandwidth should only be used for
measurements at frequencies higher than 6 MHz.
When set to this position a crystal filter with
a bandwidth of ± 1.25 kHz (3 dB) is switched in.
This knob is used for frequency tuning and the
frequency is indicated by the pointer of the fre-
quency meter. The scale in use is indicated by the
FREQUENCY RANGE switch.
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