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15.
OPTION 04C:
FREQUENCY STANDARD
11-1254
Type:
FreCJuency:
Ageing Rate:
Temperature:
An unovened crystal oscillator suitable for
non-critical appli cations or where the
instrument will
nor~ally be used with the
customer's external standard.
5 MHz.
6
'
±
1
part in
10
per month three months
after delivery, but less than ±
1
part in
10 5
in the
fi
rst year.
±
8
parts
in 10
6
over temperature range
OOC
o
to +55 C.
6
± 3
garts in
10
over temperature range
+20
C to
+40
o
C.
16 .
BATTERY POWER PACK OPT] ON: PART No.
11-1289
Mechani ca
I:
Selection:
Battery Life:
Battery Condition:
Charge Ti me:
Standby Foci Iity:
9916 Vol. 2
Battery Pack is mounted on a metal tray
inside the instrument and connected via a
polarised
4
pin connector.
By means of
3
position
LI~IE
POWER/CHARGE/
BATTERY POWER switch on rear panel.
4~
hours minimum continuous at
+20
o
C.
15
hours minimum on standby at
+20
o
C.
Indi cated by 'Battery Low' lamp on front
panel.
o
14
hours at
+20
C.
With STANDBY selected, only the internal
standard is operational.
Pressing the Reset
button activates the counter for approximately
1 minute after which it reverts to the standby
d
o '
t;
con Itlon.
Tech. Spec. (6)
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