Simpson 260 - Page 10

PHYSICAL DESCRIPTION - EXTERIOR
CIRCUIT JACKS: There are eight of these in all,
into which the cornector ends of the test leads
are plugged. The ''Common-" and "+" jacks are used
for most ranges, with the black test 1еаа plugged
into the former, the red into the latter. Except-
ions are the lO Amp D.C., Output, 50 JA/250 MV, and
5000 V А,С‹. and D.C. ranges. Connections in these
cases are covered in the individual instructions.
DIMENSIONS: 5-1/4" x 7" x 3-1/8"
138 x 178.0 xoBE ONE
WEIGHT: 3-1/2- lbs. "(146 Kg)
PEYSICAL DESCRIPTION - INTERICR
PRINTED CIRCUIT: With minor exceptions, circuit
components are mounted on à single printed circuit
board; this simplifies assembly, reduces mainten-
ance and extends the useful life of the instrument.
BATTERIES: Опе 1.5V size D battery, and four 1.5V
size AA batteries supply voltage for resistance
measurement. The size D battery alone powers the
R x land R x 100 ranges; the AA batteries supple-
ment it on the R x 10,000 range.
All are held in place by special contact
clips, while additional security is provided by
the special shape of the inside of the molded case
when this is in place. Folarities are marked, and
must be observed when batteries are replaced.
FUSE: A fuse block is mounted on the two cir-
cuit board support posts, carrying а 1 amp minia-
ture clip-in fuse. (Note: Units produced prior to
August 1961 may incorporate a soldered-in pig-tail
fuse). See note under Maintenance.
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