External Synchronization Signal - HPE 606A Operating And Servicing Manual

Sect.I] Page 2
2-6 EXTERNAL SYNCHRONIZATION SIGNAL
When the Model 606A is modulated internally a sig-
nal is available at the MODULATION Input-Output
jack for synchronization purposes. This signal is fed
from the same oscillator which modulates the car-
rier. It is of approximately 1 volt amplitude froma
high impedance source. Since the signal comes from
a high impedance source use it only as a voltage
source and do not attempt to draw current.
2-7 B+ FUSE
The regulated B+ voltage is fused on the front
panel. If you accidentally apply excessive modu-
lation to the instrument the tuned circuits may
flash over from excessive peak rf voltage. This
will blow the B+ fuse. The instrument will have
no output and the output level meter will be pinned
to left of zero. If this happens, the fuse needs to
be replaced to restore operation.
2-8 MODULATION DATA
= RATED MAL — ~
AD ee re ol
10%
oS —— Sos
\XG
100%
MAK, MOOG. FREQUENCY
SOKC 100KC IMC IOMC 65MC
CARRIER FREQUENCY
ENVELOPE DISTORTION (%)
ENVELOPE DISTORTION (%)
ENVELOPE DISTORTION (%)
Model 606A
RATED MAX. DISTORTION ———\- -
axe.
25.
tz
2 3 17 2
MODULATING
loKe 20 © 40
FREQUENCY