4.3.5 Simple Pulse Counting On Channel A “TOT”
Measuring range:
1 ... 10
9
events
Frequency range:
0 ... 100 MHz
Accuracy:
±
1 LSD
1)
Result display:
without measuring unit and decimal point
Note:
The setting of the gate time does not influence the functions period length
measurement and simple pulse counting. The repetition speed is about 200 ms
on automatic operation.
1)
LSD: Last significant digit of displayed value; corresponds to the resolution
within the respective measuring range.
2)
The trigger error (effective value) is computed as described:
(
)
∆
Ts
V
V
S
noise
in noise
=
+
−
2
2
V
- noise voltage within signal
noise
V
- internal noise voltage within amplifier
in noise
−
S (V/s)
- pulse rate-off-rise of measured signal portion in the trigger
point
4.4 Time Base
Start-up time:
15 min
Operational frequency of quartz oscillator: 10 MHz
Accuracy of frequency setting:
±
5
⋅
10
-9
Frequency deviations after 24 hours:
≤
±
10
-8
Influence of temperature:
<
±
5
⋅
10
-9
/°C
4.5 Display
The unit is equipped with a 16-digit alphanumeric LCD-matrix display. The first three digits
indicate the selected function and the next one indicates the unit operation. Eight digits are
reserved for the measuring result and the last four digits are for the display of measuring units.
In addition to the measured value, the selected function, the set measuring time, the input
voltage dividing ratio and the data transmission rate during remote control operation can also
be indicated on the display.
10
Operating Instructions UZ 2400
1/2000
