I N T R Od U Ctio N; Servic E Inf Ormatio N - Wavetek 3001 Instruction Manual

5.1 I
N
T
R
OD
U
CTIO
N
T h is section provides information
f
or disassembly . calibra-
tion, and troubleshooting t h e
W
avete k
M
odels 3001/3002
Sign al Ge n erators,
M
easurements and adjustments will he facilitated by
p
lacing
the instr um en t on its
r
ig ht side, α5 access is re qu ired [ ο the
top
a
nd botto m of the u n it fo r a
d
ju stments and test points-
5.2
S
ERVIC E INF ORMATIO N
5.2 .1
DISASSEM B LY I NF ORM ATIO
N
R
efer [ο Figure 5- Ι . T
he si de panels form part of the
support for t he top an d b ottom cove rs, t herefore t h ese
covers sh o ul
d
b
e remove d before rem oving eith er si de
p
anel . The covers and pa nels ca n be r
emoved as ind icated
below.
ΝΟΤΕ
One side p
anel must
r
emai n on
t
h e instru ment to secure
the front-panel assembly to the chassis.
REMOV AL OF BOTTOM CO V E R -
R
emove the two rear
feet (Α )
a
nd lift the cover off with α slig ht rear m
ovement .
Reinstall the cover
b
y reversing th e re moval μr οε .( Ιιιι e,
REMOVA L
O
F FRONT-TOP
R
AI L - The top rail may
h
e
r
emo
v
ed to facilitate
r
emoval of the
M
eter Boa rd o r Modu-
lation
B
oard asse mb ly . The
r
ail is remove d by removing
t
he
t
hree screws (D) an
d
lifting t he
r
ail up ward.
REMOVA L O F SID E PA NEL - Either side p
anel can he
remove d to provide better access b
y
r
emovi ng th e six
sc rews (Ε )
h
ol ding the si d e panel to the i nstrum ent.
CA
U
TIO
N
To p revent possible
d
amage w
h
en
r
einstalling side panels,
u
se only
t
he original screws or equivalent .
L
onger screws
in t h e
b
otto m two
h
oles can cause
d
amage to wiring .
5.2 .7 MO
D
ULE
S
ERVICI N G
S E
CTIO
N
S
M
AI
N
T
EN
A
N
C
E
REM O VA L O F M OD ULE - Α m
odu le may be removed by
ι em ονίιιμ any cables attac he d to top of the module and
removing the hold-down screw (C) fr om
t
he bottom-
R
oc k
the module slig h tly while lifting upward to f ree it 1 rοιη its
c h assis socket,
R EIN STALL ING MODULE - Before installing t h e m
od-
ule, chec k
t
hat all module pi ns are straigh t an d prop erly
alig n e d ; then carefully seat the m
odu le
p
ins into
t
he c hassis
socket .
R
e place the module hold-down screw (C) to insure
α good ground connection
b
etween t h e mo
d
ule and chassis .
and re place any cables attac h ed to the top of
t
he mo dule.
Module cable connections are sh own in F ig ure 5-6.
ΝΟΤΕ
If α
m
o d
u le is re placed with α
n
ew module, it will
b
e
n
ecessary to cali b rate t h e ph ase-locked loop or other
circuits involved (see Table 5-3) .
M
OD ULE PIN NUMBER I N G SYSTEM -T he m
odu le
p
ins
are numbered as
s
how n in Figure 5-2 . The off-center in dex
stud preve nts t h e mo
d
ule's
b
ei ng plugged i n back war
d
s, and
also provides a method for locating pin 1 .
ΝΟΤΕ
All 16 pins are not re qu ired in each mo du le. Only
t
he pins
actually used are installed,
b
ut the
n
um bering system
re mains t h e sa me.