TM5-6675-326-14
6 - 3 . 1 . 3 P o i n t C o u n t e r P e n.
Used to count items of a similar type found
on a map, blueprint, plan, etc.
Each time the point counter pen is
stroked in counting, the transducer in the pen emits a signal pulse which
i s s e n t t o t h e a u t o - s c a l e r f o r t o t a l i n g.
6-3.1.4 Drafting Bridge. A layout instrument and mount for the encoder
of the planimeter.
When the encoder is moved from the planimeter and
mounted on the drafting bridge, it can be used for linear measurement and
detailed layout work.
6-3.2 Auto-Scaler. Processes pulses emitted by measuring instruments .
The pulses are input into the rear of the auto-scaler through the
applicable input jack (E1 , E2 , or POINT COUNT). There are two modes of
entry to the auto-scaler, NORMAL and SCALE.
This is determined by the
NORMAL/SCALE switch. When switch is on NORMAL, pulses bypass the scaler
circuit and are applied to the decade up/down counter.
When the switch is
on SCALE, pulses are first input into the scaler circuit before counting.
The auto-scaler has five functional components: scaler, decade up/down
counter, LED display, calculator interface circuit, and command switches.
6 - 3 . 2 . 1 S c a l e r .
Enables operator to perform a scale reduction of the
pulse count .
When activated by NORMAL/SCALE switch, the scaler uses a
c o r r e c t i o n c o n s t a n t t o d i v i d e i n p u t p u l s e s.
The correction constant is
i n p u t b y s e t t i n g d i a l s .
Pulses are then sent to the decade up/down
c o u n t e r .
6-3.2.2 Decade Up/Down Counter. Counts pulses received from the
measuring Instruments or scaler circuit.
It counts up or down depending
on the direction that the measuring instrument is moved.
The pulse count
i s c o n t i n u o u s l y o u t p u t t o t h e c a l c u l a t o r i n t e r f a c e c i r c u i t a n d s c a l e r L ED
d i s p l a y .
6 - 3 . 2 . 3
c o u n t e r.
s w i t c h .
6 - 3 . 2 . 4
LED Display.
Displays current total of the decade up/down
The decimal place for the display is controlled by the DECIMAL
C a l c u l a t o r I n t e r f a c e C i r c u i t.
Converts pulse count into data
compatible with the calculator and transmits it through a ribbon cable to
the calculator. Converts and transmits signals from the command switches .
When switch is on AUTO, data is automatically and continuously transmitted
to the calculator. When switch is on MAN, data is transmitted only when
the Print command is received from the PRINT X command switch on the
c a l c u l a t o r .
6-3.2.5 Command Switches. Control the operating modes of the
a u t o - s c a l e r,
data transmission, and remote operation of the calculator.
There are six command switches:
CLEAR, PRINT, INIT, X MEMORY, MAN/AUTO,
and ACCU.
6 - 8
