Advertisement
cycles.
4.
While
recording
a 500 cycle
signal
on the tape,
adjust
Record
Level Calibration
(VR6, Fig. 34) to obtain VU meter reading of
exactly
OQ VW.
5.
Set MONITOR selector
switch to SOURCE position.
6.
Adjust Record Meter Level Calibration
(VR5, Fig. 34) to obtain
WU meter
reading
of exactly
O VW.
Record
Head
Azimuth
1.
Connect
a signal
generator
to Channels
A and B LINE
INPUT.
Connect
a temporary
channel
selecting
switch,
across
the
output
jacks
of Channels
A and B, and the
output
of the switch
to a
VIVM.
Set MONITOR selector
switch to TAPE position,
and TAPE SPEED
selector switch to HIGH (7-1/2) position,
2.
While
recording
a 15 kc signal
on the tape,
set LINE
INPUT
level
control
so that meter
reads -15 ~20 db below normal operating
level
(-15~20
VU on VU meter), and then adjust the record head
azimuth
screw
(Fig. 9) for maximum
output.
3.
Check
setting by repeating
the above
procedure
using Channel
B.
Overall
Frequency
Response
To avoid
tape saturation,
overall
frequency
response
check
at 7-1/2
ips and 3-3/4 ips should be made at least 20 db below operating level.
1.
Connect
a signal
generator
to Channel
A LINE
input.
Set MONITOR
selector
switch
to TAPE position,
TAPE SPEED
selector
switch
to
HIGH
(7-1/2).
«
2.
While
recording
a 500 cycle
signal
on the tape
set LINE
INPUT
level
controls
to obtain VU meter reading
of O VU, and adjust
OUTPUT
level controls
to obtain
a VIVM reading
of exactly
O db
(O2775-V)%
="26u2
Advertisement
