SPECIFICATIONS
Measuring Functions
Frequency A or B
Range,
Freq A:
0.1 Hz to 160 MHz
Freq B:
70 MHz to 1.3 GHz (option PM 9608B)
Mode: Reciprocal frequency counting.
LSD unit displayed:
2.5 ∗ 10
−7
∗
FREQ
Measuring
time
Frequency A/A
0
A Frequency A measurement is performed. The meas-
ured frequency is divided by the constant A
0
before dis-
play. The resolution of the displayed ratio is determined
by the FREQ A measurement. At power on A
0
is set to 1
(default).
Frequency A-A
0
A Frequency A measurement is performed. The value of
the constant A
0
is substracted from the measured fre-
quency before display. The resolution of the displayed
difference is determined by the FREQ A measurement.
At power on A
0
is set to 0 (default).
RPM A
A FREQUENCY A measurement is done. The measured
frequency is multiplied with 60, and shown on the dis-
play as revolutions per minute (RPM).
Range: 6 RPM to 720
*
10
6
RPM
Period A
Range: 8 ns to 2*10
8
s
Mode: Single period measurement (SINGLE) or period aver-
age measurement (at 0.2, 1 or 10 s Measuring-times).
LSD Displayed:
SINGLE period measurement:
100
ns
(
TIME
< 100
s
)
5 ∗
PERIOD
10
9
s
(
TIME
> 100
s
)
Period average measurement:
2.5 ∗ 10
−7
∗
PERIOD
Measuring
time
Totalize A
Event counting is controlled by the START/STOP button.
Sequential start-stop counts are accumulated. RESET
closes the gate and resets the Frequency Counter to
zero.
Range: 0 to 1*10
15
with indication of k or M (Kilo-pulses
or Megapulses). The result is truncated if out of display
range.
Frequency Range:
Sine-Wave:
0 Hz to 16 MHz
Pulse:
0 Hz to 16 MHz
Pulse Pair Resolution: 8 ns
LSD displayed: 1 unit count (counts < 10
9
)
5*counts/10
9
(counts ≥ 10
9
)
Width A
A positive Pulse Width measurement is performed.
Measuring time selection is not valid (always SINGLE
measurement).
Range:
100
ns
to
2 ∗ 10
8
s
SPECIFICATIONS Page: 35
PM 6669 - OPERATORS MANUAL
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