Wavetek 193 Instruction Manual page 25

3-7
I
Figure 3·8. Sweep Operation
AUX SYNC
OUT (TIL)
AUX GEN
FUNC: /"\
GCV OUT AND
AUX OUT
MAIN GEN
FUNC:
"v
FUNC
OUT
As an actual exercise in operation, perform steps 22
through 26 of table 2-1.
Select modulation func-
tion.
Set sweep rate.
Select SWEEP
Set maximum sweep
(stop) frequency.
Select SET WIDTH.
Select start frequency.
Select SET START.
Setting
4 AUX GEN
MODE
20
5 FUNC
21
6
AUX GEN FREQ,
AUX GENI
VERNIER
22
WIDTH/AF/AM 20
3
AUX GEN
MODE 20
2 START FREQ
Dial 1,
FREQ MULT 5
and VERNIERISYM
5
AUX GEN
MODE
20
Step Control/Connector
tive VCG inputs (ref: paragraphs 3.2.3 and 3.2.5). In-
ternal sweep is the main generator being swept by the
auxiliary generator. Internal sweep operation is the
same as manually controlled main generator opera-
tion (ref: paragraph 3.2.2), except that, in addition, the
auxiliary generator sweeps the main generator fre-
quency between two preset frequency limits (Figure
3-8). The following steps demonstrate setting up the
controls for frequency sweep of the main generator.
(Bold numbers are keyed to figure 3-1. Refer to
paragraph 3.1 for further explanations of controls and
connectors.)
3.2.7 Sweep Operation
Both the main generator and auxiliary generator may
be swept with a ramp voltage applied to their respec-
Figure 3·7. FM Operation
·Similar waveforms apply when external signals are used
to
AM, FM and sweep
the main generator. AUX OUT and AUX SYNC OUT signals are applicable
to
AUX GEN use only.
AUX SYNC OUT (TTL)
AUX GEN FUNC: -: AUX OUT
MAIN GEN FUNC: -; FUNC OUT
6 AUX GEN FREQ,
AUX GEN
VERNIER
22
As an actual exercise in operation, perform steps 18
through 21 of table 2-1.
5
Select FM.
Select modulation
function.
Set modulation rate.
AUX GEN
MODE 20
FUNC
21
4
3
Set for FM center
frequency.
Select SET aF.
Set for peak frequency
deviation.
FREQ/START
FREQ Dial 1
FREQ MULT 5 and
VERNIERISYM 5
AUX GEN MODE 20
WIDTH/aF/aM 20
2