Sony APR-5001 Series Operation And Maintenance Manual page 17

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ADDENDUM
TO
APR - 5000 SERIES OPERATION AND MAINTENANCE SUPPLEMENT
T - 9482 - 685 -
1
SOFTWARE UPGRADE TO VERSION P 4.01
.
01.02
the take - up reel
.
For 1
/
4
PLAY /
STARTUP operations remained unaffected
.
tape machines
,
1
.
INTRODUCTION
Field reports indicate that
some
minor operational
defects have been encountered in
APR
-
5000
machines
equipped with Version
P 4.01 . 01.01
software
. Because
of this
,
APR
-
5000
products
now
incorporate
an
upgraded software version ,
P 4.01 . 01.2 .
This version
fully corrects the following deficiencies
.
e . A
timing flaw in the Time Code Longitudinal cor -
rection process caused occasional , sporadic errors
to be injected into the recorded Time Code
.
These
errors occurred only when using SMPTE
-
DF
Time
Codes , at 7 1 /
2 and and 15 IPS , from an external
source
.
Time Code from the internal generator
,
EBU and SMPTE - ND Time
Codes ( at all speeds) ,
and SMPTE - DF Time Code at 30 IPS
,
remained
totally unaffected
.
a
.
CHASE and LOCATE Operations to EBU Time
Code resulted in a search which corrected itself
upon slewing to the target location
. This was not
a fatal defect
,
since the desired location was
always correctly acquired
.
2
.
EFFECTIVITY
The new software will be incorporated in future pro
duction
as follows :
A " Pre
-
Play " condition would not function from
a LOCATE
operation when
the machine was sup -
plied with
a
" frozen " external Time Code
.
b
.
APR
-
5001
,
- 5002 , - 50
O 2 D
, and
-
5002 W
Serial Numbers 20811 and above
Serial Numbers 20739 and above
Serial Numbers 21143 and above
LOCATE
operations occasionally became slightly
inaccurate when the machine was supplied with
external Time Code
.
This
error was very
small
,
never
amounting
to more than a few frames .
c
.
APR
-
5002 H
APR
-
5003
3
. FIRMWARE IDENTIFICATION
d
.
PLAY / STARTUP operation
on machines
using 1 / 2 "
tape format exhibited a momentary loss of tape
tension under
"
unknown radius " conditions ( im -
mediately after tape break )
.
This condition
occurred only when there
was a
small radius on
The new version firmware
can
be retrofitted by the
user , the necessary Programmed PROM Set being iden
-
tified by the SPPC Part
Number
T - 9413
-
956 -
4 .
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Addendum