BRUEL & KJAER 1618 - Page 17

AVERAGING TIME
FIXED VARIABLE:
A two-pOSition sliding switch to select one of two operation modes
with a Level Recorder, as further explained in sections 3 .3 .3/ 24 and
3.3 .4/ 9 .
AVERAGING TIME CONTROL:
A 15-pin outlet for the averaging time control program signals from
the Band Pass Filter to the Measuring Amplifier. The socket fits the 15 -
pin Plug JP 1501 . For connections see section 3 .3.2 .
OUTPUT:
INPUT:
RECORDER CONTROL I:
RECORDER CONTROL
II :
BNC
socket in parallel with front panel output socket.
BNC socket in parallel with front panel input socket.
7 -pin
DIN socket for remote switching of the filters by a Level Recorder
Type
2307, and for remote control of the Level Recorder by the Type
1617 . For connections see Fig .2 . 4.
8-pin DIN socket for remote switching of the filters by a Level Recorder
Type
2306, and for remote start and stop of the Recorder by the Type
1617 . X-ramp and pen- down signals for an X-V Recorder are also sup-
plied via this socket. For connections see Fig .2.5 .
I nput for f il te r
shi ft pu lses n + 32
J L ov
+ 32 V
to se lect --t-t-
Au tomatic Stop
Not u sed
+ 32 V DC from
Record er lindi ca t es)
Recor de r on)
+ 32 V to
-,:-t--- stop Recorder
immediately
+ 32 V to
se lect pe n I itt 77 0 774
Fig.2 .4. RECORDER CONTROL I viewed from outside the socket
12
X ra mp ou tp ut wh en no L eve l
Recorder is connected. W it h
L evel Recorder + 6 V to se lect
1/3 oct . interval between pul se s
Fi
lte r sh i ft
pu lses
o V to se lect
Au to matic Stop
o V to stop
Recorder imm ediately
Not used
+ 6 V from
Level Recorder
(in dicat es recorder
on)
o V f or
pen d ow n
770 3 55
Fig. 2. 5. RECORDER CONTROL /I viewed from outside the socket