Establish the Wave From on the Reflectoscope Display Screen for Daily Operation.

(a) Remove the reflectoscope cover.

(j) Turn the SYNC switch (on transigate)

to MAIN PULSE, and the GATE OFF switch

( b ) Plug the reflectoscope into a 115 volt

10 volt, 50 / 60 cycle single phase power

on.

source. Turn the POWER (SCALE ILLUM)

(k) Turn the START knob (on trans-

igate) to "2". A d j u s t t h e S T A R T V E R N I E R

knob clockwise and allow time for warm-up.

k n o b so that a downward jog is in line with the

7th from the left vertical scale line on the display

knob counterclockwise, but not to "OFF".

screen. Place the search fixture UPPER-

(d) Turn the SENSITIVITY control

LOWER switch to "UPPER".

knob to "l", an d the REJECT knob to "OFF".

(l) Turn the LENGTH knob (on trans-

( e ) The wave form on the display screen

igate) to "1". A d j u s t t h e L E N G T H V E R N I E R

should be similar to view G, fig. 6-53.

Note. Should the wave form not appear,

knob to end the gate at the right hand edge of the

o r is markedly different than that shown in view

f l a w signal (approximately 9-1 / 2 vertical scale

lines from the left of display screen).

G, figure 6-53, recalibrate the tester in ac-

cordance with the instructions in paragraph d,

( m ) Adjust the VERT screw to place the

lower gate line over the zero horizontal scale line

above.

on display screen.

(f) Pour water into the master checking

( n ) Adjust the FOCUS and ASTIG knobs

g a g e to the "FILL" level (five inches from top),

for the sharpest wave form.

refer to paragraph d (3) (a). Place the marked

(0) Adjust the SENSITIVITY control

defect portion of the gage facing the operator.

k n o b (Pulser / receiver unit) until the echo pulse

Note. Wipe all air bubbles from the

measures 2-1 / 2 inches high on the display

cylinder wall. Bubbles may cause a false alarm

screen (view D, fig. 6-53).

signal.

Turn

the

REJECT knob

(p)

( g ) Remove the protector from the search

(pulser / receiver unit) clockwise to the reduce

fixture probe. Place the search fixture in the

t h e echo pulse height to 1 inch (view E, fig. 6-

master checking gage with the fixture flange

53).

resting on the cylinder mounting flange. Move

t h e probe to the top of its travel and place the

(q) Turn the ALARM LEVEL knob (on

transigate) to + AUTO RESET. Rotate the

fixture UPPER-LOWER switch to "UPPER".

ALARM LEVEL vernier knob clockwise, then

(h) Connect the cable to the search fixture

c o u n t e r c l o c k w i s e until the light just appears on

and the reflectoscope at connector "R". The

RESET button. Place the AUDIO switch to

wave form on the display screen will be similar to

"ON" and the alarm will sound (buzz).

view H, fig. 6-53.

(r)

Turn

the R E J E C T k n o b ( o n

( i ) Rotate the search fixture handle clock-

wise to move the probe downward. Rotate the

pulser / receiver unit) counterclockwise to

search fixture handle until the echo pulse, or

" O F F " . The echo pulse height will then return to

2 - 1 / 2 inches (view D, fig. 6-53).

spike (view D, fig. 6-53) is shown on the display

screen when the fixture pointer alines with the

(S) Continue clockwise rotation of the

s e a r c h until handle until a heavy echo reflection

defect on the master checking gage.

enters the gate (view F, fig. 6-53). The heavy

(j) Rotate the search fixture handle to

m o v e probe slightly upward and downward until

r e f l e c t i o n indicates that the search fixture probe

a maximum pulse is seen on the display screen.

h a s reached the maximum downward travel. The

c y l i n d e r barrel tester is now adjusted to establish

(k) Adjust the SENSITIVITY control

the wave form.

knob to probe an echo pulse height of 2-1 / 2

inches (view I, fig. 6-53).

(t) Turn the POWER KNOB to "OFF".

Disconnect cable and remove the search fixture

(l) Turn the REJECT knob clockwise to

from the master checking gage. Install probe

reduce the echo pulse height to 1 inch.

protector and reflectoscope cover. Pour water

(m) Turn the ALARM LEVEL knob (on

from checking gage.

transigate) to + AUTO RESET. Rotate the

e. Establish the Wave From on the Reflec-.

ALARM LEVEL vernier knob until the light

toscope Display Screen for Daily Operation.

just appears on RESET button. The alarm will

(1) Preliminary calitiration.

s o u n d (buzz) when the AUDIO switch is "ON".

6-64