Wavetek 132 Manual page 8

10.
FM - Depressing this push button along with
the FUNC push button (7) allows the selected
signal, either
pseudo-randomly frequency modulated, or jit-
tered. The modulating signal is provided by
pseudo-random analog noise, and the S/N -
N/S (dB) controls frequency deviation. The
bandwidth of the modulating signal is controlled
by the NOISE FREQ HZ selector (15) and
vernier (16).
11. OUT - Provides the selected generator out-
put function. The generator may operate into an
open circuit providing 20 V peak to peak maxi-
mum, or into a
to peak output.
12.
OUTPUT ATTEN (dB) - Attenuates the output
(both signal and noise) from 0 dB to -60 dB in
six calibrated 10 dB steps according to the fol-
lowing table:
Figure 2-l. Operating Controls, Front Panel
A
, ,
or wave, to be
load providing a 10 V peak
132
G E N E R A T O R
Step Output peak to peak into
Attenuator
Position Maximum
Vernier
fully cw
0 dB
- 1 0 dB
- 2 0 dB
- 3 0 dB 0.3 v
- 4 0 dB 0.1 v
- 5 0 dB 0.03 v
- 6 0 dB 0.01 v
* The values in this table are approximate. The OUT-
PUT VERNIER (dB) (6) will reduce the output
approximately 20 dB in all cases, as shown.
S/N -
13. N/S (dB) - I n the S/N mode, this control
attenuatesthe analog noise from
five calibrated 10 dB steps. The selectable signal
Minimum
Vernier*
10V I V
0.3 v
3 V
I V 0.1 v
0.03 v
0.01 v
0.003 v
0.001 v
0 to
-50 dB in
Load
5