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POWER:
(cont.)
Power
•
J
l
On
.Off
PREAMPLIFIER INPUT:
Preamp
.
Input
Pressing SYSTEM RESET when the power on digital self-test has
been completed causes:
1.
All measurement data to be cleared .
2.
The complete state of the analyzer at the time of power-off to be
recreated, except for the measurement data
3.
The state of measurement and data transmission controls to be
RECORD -
"Stop"
AVERAGING CONTROL- "Stop"
RECORDER -
"Stop"
DIGITAL 1/0 -
"Stop"
Channel A and channel B. 7 -pin input for signal entry from most
Bruel
&
Kjrer Microphone Preamplifiers. Input impedance 1 MQ in par-
allel with 100 pF. Accepts standard Bruel
&
Kjrer plug part number JP
0701. The connection diagram is given in Fig.4.4.
Preamp. Voltage
+
150 V (2 rnA max.)
Heater Voltage
+12 V (at 200 rnA)
Heater Voltage
+ 6 V (at 200 rnA)
Signal
Input
830660
Fig.4.4.
Connection diagram, 2032 PREAMPLIFIER INPUT, external
view
POL. VOLTAGE:
Pol. Voltage
200V
I
28V
ov
ACC. INPUT LINE DRIVE:
Ace
.
Input
line
Drive
Channel A and B. 3-position switch for selecting the polarization volt-
age supplied by the PREAMP. INPUT socket. Selectable between
200 V, 28 V, and 0 V.
Channel A and B. TNC connector for signal entry from the Bruel
&
Kjrer Line Drive Amplifier Type 2644. The connector supplies the nec-
essary line-drive power. Since the maximum output from the 2644 is
5 V peak, a maximum sensitivity of 4 V peak is recommended for a
2032 input channel when a 2644 is connected, such that overloads in
the 2644 can be detected. Accepts standard Bruel
&
Kjrer plug part
number JP 0152 or TNC to minature accelerometer plug adaptor JP
0162.
27
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