Wavetek 3000 - Reverse Power Protection Circuit

OB

R .P . PINS
ATTEN

GROUNDED

I
0

None
10

2
20

3
Level Program Plug
Reverse Power ProtectionCircuit
If
an
external RF voltage of approxi-
mately 6
VRMS or more is accidentally
applied to the
instrument's RF OUT
connector, an internal switch in
the
ProgrammableAttenuator in series with
the RF output will open . This
prevents
damage to the instrument's
Attenuator
or outputAmplifier
.

This open switch
OPTION
1A
willbe
indicated by
a flashing
of
the
UNLEVELED lamp on
the front panel . Once
the switch is tripped, it
will latch in
the open position and
remain open until
reset .

A combination of a bad
mismatch,
high output level ( 0 .1 V) and
changing
frequency

can also cause the Protection
Circuit to trip .
8/1A- 3
30
40
50
60
70
80
90
100
2&3
4
2&4
3&4
2,3, & 4
5
2&5
14
PIN # CONNECTION
1 Ground
2 1 10 dB
3 2 10 dB
4 4 10 dB
5 8 10 dB
6 1 1 dB
7 2 1 dB
8
4 1 dB
9 8 1 dB
10
1 0 .1 dB
11 2 0 .1 dB
12 4 0 .1 dB
13 8 0 .1 dB
14 1 100 dB
15
TABLE
DB
ATTEN
1
R .P .
PINS
GROUNDED
DB
ATTEN
R .P .
PINS
GROUNDED
1 6 0 .1 10
2 7 0 .2 11
3
6&7 0 .3 10 & 11
4 8 0 .4 12
5 6&8 0 .5 10 & 12
6 7&8 0 .6 11
&
12
7 6, 7, & 8 0 .7 10, 11, & 12
8 9 0 .8 13
9 6&9 0 .9 10 & 13