BRUEL & KJAER 4912 Instruction Manual page 9

POWER INPUT:
TRIGGER LEVEL:
Standard 7-pin DIN socket accepting plug JP 0703, for recharging the
battery and/or powering the instrument from an external source. The
connections are shown in Fig.2.2. Pin 2 is connected to the outermost
contact of EXT. TRIG. INPUT. When a plug is inserted, the 4912 can
be powered only from an external source, unless the plug has been
modified as described in section 3.2.
+ 6 V to+ 15 V
+ 6 V to+ 12 V
- - - - + i l l - - - - -
DC, max. 6 W, to
DC, 0 to 600 mA, _ _ _
__...,t--1•
to charge the
batteries
ov
power the instrument
externally
790542
Fig.2.2. POWER INPUT connections (external view)
Single-turn level-setting control for adjusting the voltage at which the
EXT . TRIG. INPUT operates. Adjustable between -0, 1 V and
+
0, 1 V
(rising to -0,2 V and + 0,2 Vat 20000 Hz) .
5