Racal Instruments 9901 Maintenance Manual page 17

MECHANICAL
Height
Width
Depth
Case 83
mm
240
mm
Overall
1
10
mm
284
mm
268
mm
Weight
2.6 kg approximately.
18
.
OPTION
01
SERIAL
TO PARALLEL INTERFACE
Data and Control
Information:
8 decades of
data
in
4
line
BCD
weighted
1248,
3 line
decimal point position,
print
command.
print
hold,
reset,
overflow
and time-base
information.
All logic levels t.t.l.
compatible.
For further details
refer to
the
Appendix
in
Section
4
at
the
back
of the
book.
19.
OPTION 04A
FREQUENCY STANDARD
9442
Frequency:
5MHz.
Ageing
Rate:
±
3
parts
in
10
/day
after
3 months continuous
operation.
Warm-up
Time:
Better
than
±
2
parts in
10^ within 6 minutes.
Temperature
Better
than
±
3
parts in 10
per
C
over the
range
Stability:
-10°Cto+45C.
20.
OPTION
04B
FREQUENCY STANDARD
9421
Frequency:
5MHz.
Ageing
Rate:
± 5
parts
in
10^^/day
after
3
months
continuous operation.
Warm-up
Time:
Better
than
±
1
part in
10
within
20 minutes.
Temperature
Better
than
±
6
parts
in
10^^
per
°C
over the
range
Stability:
-10°C to445°C.
21.
ACCESSORIES
Accessories Supplied:
Operating handbook and spare
fuses.
Accessories Available:
19-inch rack
mounting
kit.
Carrying Case.
9901 Vol.2
Tech. Spec.
(6)