BRUEL & KJAER 1618 - Controls; Front Panel

2. 1. FRONT PANEL
Se lected Fi lt er -~ -
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2. CONTROLS
Ma n ua l Filter Se lector Averaging Control
. -- ~ - Power On
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In pu t Se l ectivity Ra n ge
Filter Co n tro l Mode Ou tp ut
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Fig . 2. 1. Front panel controls of the Type 1617
POWER ON:
AVERAGING CONTROL:
MANUAL FILTER SELECTOR:
SELECTED FILTER :
INPUT:
Power is on with the switch in the up position . Warm -up time is ap-
proximately five seconds.
Two switches used to select averaging time programs , when the
Band Pass Filter is connected to a Measuring Amplif i er such as the
Type 2607, which has provision for remote control of its averaging
time .
Program: Selects an averaging time program suitable for " Sine ",
" Fast Random", or "Slow Random" signals .
Minimum Time: Selects minimum averaging times for the averaging
time programs.
A rotary switch that selects the filters and we i ghting networks when
operating in the "Manual" control mode . The two frequency scales
cover the measuring ranges that can be chosen by the " Range" sw i tch
and indicate the selected frequency band.
A
digital display that shows the centre frequency of the selected filter .
The display also indicates the bandwidth chosen, and whether a linear
or weighted response has been selected.
Standard B & K coaxial socket, fitting JP 0101 Plugs, paralleled by a
BNC socket
on the rear panel. There is an i nput " Overload" lamp , and
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