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10
D. GENERAL CHARACTERISTICS
Display
Read out
Memory
Display time
Reset
Unit annunciators
9 digit planar display
Leading zero blanking
10 mm high 7-segment numerals
Decimal point indication
Switchable ON/OFF on front panel
50 ms ...5s
or infinite (HOLD) -
Minimum externally controlled display time 3 ms
Pushing RESET button resets counter to zero
ns, ws, ms, kHz, MHz, GHz and NO-GO
by read only memory pro-
gramming
Gate lamp
LED indicates when the main gate is open and counting takes place
Osc
LED indicates, when power cord is connected, that oven-enclosed
oscillator is on for initial stabilization
Remote
LED indicates when the instrument is remotely controlled. Remote
control overrides manual control
Time base
Stability at 10 %
T
t
0
Version
Oscillator
Ageing rate
|
eer
variation of
Warm-up
| — stability
;
i
|
mains voltage
time
PM 6650 B
TCXO
+= 1>10-7/month
£1x10-8/°C avg.
+1x10°
None
PM 6650 A
PM 9680 A
+ 1.59/24 h*
= 5x 10-19/°C avg.
= 110-10
we
PM 6650 E
PM 9681
+5>x10-19/24 h *
=5>x10-19/°C avg.
= 1x 10-10
ia
* Average, after 72 hours continuous operation
** Less than 7 minutes to within = 10-7
Supply
Voltage
Consumption
Temperature range
Operating range
Storage range
Dimensions
Width
Height
Depth
Weight
115 V or 230 V £15 %, 50... 400 Hz
40 W (without any options and sub-units)
75 W (including PM 6634 and options)
5 W (in stand-by)
0... +45°C
—40...
+70°C
Table top
19" rack mount
Cabinet PM 9714 A
Cabinet PM 9716 A
305 mm
445 mm
132 mm
132 mm
404 mm
445 mm (incl. handles)
9.5 kg
11.5 kg
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