Specification-1910
Operators
SPECIFICATION
The performance requirements listed here apply over an
ambient temperature range
of
OCC
to
+50°C
after a warm-
up time
of
20 minutes. The rated accuracies are valid when
this instrument is calibrated at
+20°C
to
+30
c
C after a
warm-up time
of
ten minutes minimum.
Test equipment used
in
verifying performance require-
ments must
be
calibrated and working within the limits spec-
ified under
Table
3-1, Recommended Test Equipment,
provided
in
Section
3.
Performance Check Procedure,
of
the
Service Manual.
Items listed
in
the Performance Requirements column of
the Electrical Characteristics tables are verified by complet-
ing the Performance Check
in
Section 3 of the Service Man-
ual, unless specifically stated otherwise. Items listed
in
the
Supplemental Information column may not
be
verified
in
ei-
ther manual; they are either explanatory notes
or
perfor-
mance characteristics for which
no
limits are specified.
The Performance Check Step
No.
column lists the spe-
cific step number
of
the Performance Check procedure
in
Section 3
of
the Service Manual that checks the appropriate
Performance Requirement items.
Table 1-1
PROGRAM SIGNAL PATH/VITS INSERTER
Performance Supplemental
Perf. Ck.
Characteristics
Requirements Information
Step. No.
Program Line Input
Input Level
1V(0.7 to 1.4
V)
Input Impedance
75
Q nominal
53
Return Loss
Power
On
At least 46
dB
to 5 MHz
53
Power Off/Bypass At least 40
dB
to
5 MHz
53
Program Line Out
Program Monitor Out
Impedance
75
Q nominal
53
Return Loss At least 36
dB
to
5 MHz
53
Hum Rejection At least 10 dB.
Jumper selectable to
20
dB.
15
ReferenCed
to
1Vhum. ReqUires unique test equip-
ment capable of inserting 1V
hum on the program
line.
Keyboard (no noise) Less than 0.25 IRE
9
Video Gain Unity Gain ± 0.5% 1
DC
Blanking Output Level oV
±100
mV
8
VITS Pedestal Offset
from Blanking
OV
Hum
2
mV
or
less 10
1V
Hum
10
rnV
or
less Requires unique test equip-
ment capable
of
inserting 1V
hum on the program
line.
1-2
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