Table of Contents
Advertisement
Tape Recorder
7001
Heterodyne Analyzer
2010
,.---1-.~~~ z~~~l!)-
. :
+-------.
Level
i
!
~¥
~='d"'
I
.
. •
:_
_
•
---
~•
l
I
.@.
e i
ii
,
.
-@.
I
---..J'u~~~-
o
I
I
I
I
I
L _ _
- - - - - - - - - - - - - - - - - - _ 1
UB 0041
171398
Fig.6.7. Frequency analysis using 7001 Tape Recorder
Tape splice noise in the recorded loop can be excluded from the analysis
using the 8 & K Type 2972 Tape Signal Gate. For details
see
the instruction
manual for the Type 2972.
6.3. USE WITH THE HETERODYNE SLAVE FILTER 2020
6.3.1. General
Addition of the Heterodyne Slave Filter Type 2020 connected as an
external filter to the 2010 enables synchronous filtering of signals. In the
example shown in Fig.6.8, filtering of the compressor signal enables control
of the exciter level at the fundamental frequency only and allows response
measurements at very low levels or in the presence of high ambient noise
signals.
The filter tuning signals for the 2020 are provided by sockets marked TO
2020 on the rear panel of the 2010. The connections are made between the
,--
1
I
I
filter
tuning
signals
·•
---
---
Measuring Amplifier 2607
.
.
1
Power Amplifier
Heterodyne Slave Filter 2020
Level Recorder 2305
1
Heterodyne Analyzer 2010
2706
I
L - - - - - - - - - - - - - - - - - - - - - -
~c~~ca~s~e:£_ ~".!.--------
- - - - - - - - - - -
-i77~
Fig.6.8. Use of the 2010and the 2020 in a regulated system
70
Advertisement
Table of Contents
