Universal Counter Hm 8021-4; Specifications - Hameg Instruments HM 8021-4 Manual De Instrucciones

Universal Counter
HM 8021-4
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Frequency Range: DC to 1.6GHz
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Sensitivity: 20mV
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7 Measuring Functions
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3 Selectable Gate Times; External Gate
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8 Digit LED-Display + Sign + Exponent
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Temperature-Compensated Time Base
-7
(TCXO) 5x10
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Selectable Autotrigger
With over 15,000 units sold in Europe, the
HM 8021-4 brought new dimensions to the price/
performance ratio available in universal counters.
With this new model, HAMEG continues to lead
the market in high performance, low price
counters. This microprocessor-based instrument
has built in self-test and auto-calibration features
as well as two high sensitivity inputs with an
extended frequency input range of DC to 1.6 GHz.
The reciprocal frequency measurement technique
provides high resolution of low frequency signals
with at least seven significant digits for a 1s
measurement duration. The HM 8021-4 is
equipped with an extremely stable temperature
compensated crystal oscillator (TCXO) with a
stability of 0.5 parts per million over the entire
operating temperature range. Readings of
frequency, period, time interval and totalized count,
up to 99,999,999, combined with the Display
Hold function and a full range offset makes this
instrument ideally suited for a broad range of
applications. The Auto Trigger function allows
for accurate measurements to be made, even on
noisy waveforms and those with extremely short
duty cycles. The HM 8021-4 provides variable
trigger control, offers selectable 20 dB attenuation
and AC or DC coupling to simplify measurements
on complex signals.
When comparing the HM 8021-4 to other
instruments of it's price range you can easily see
what makes the HM 8021-4 such an outstanding
value.
Subject to change without notice

SPECIFICATIONS

(Reference Temperature: 23°C ±1°C)
Measurement Functions:
Frequency A/C; Period A; Totalize A;
Pulse width (averaged);
Totalize A during Ext. Gate.
Input Characteristics: (Input A)
Frequency range:
0 to 150 MHz
10 Hz to 150 MHz
Sensitivity: (normal triggering)
DC to 80 MHz
80 MHz to 150 MHz
20 Hz to 80 MHz (autotrigger) 50mV
Min. pulse duration:
Input noise:
Coupling:
Input impedance:
Attenuator:
Max. input voltage:
from 0 to 440 Hz
1 MHz
Input Characteristics: (Input C)
Frequency range:
Sensitivity: to 1.3 GHz
to 1.6 GHz
Input impedance:
Coupling:
Max. input voltage:
Input Characteristics (External Gate)
Input impedance:
Max. input voltage:
High-/Low-Level:
Min. pulse duration:
Min. eff. gate time:
Frequency A:
LSD: (2.5x10
Resolution:
Period A:
Range:
LSD: (2,5x10
Resolution:
Totalize A (manually / gated by external signal):
Range:
Min. pulse duration:
LSD:
Resolution:
Ext. Gate error: (in manual mode only)
Time Interval:
LSD:
Resolution:
Offset:
Range: same specification as normal measurement
Gate Time:
Range:
(cannot be shorter than 1 period)
External gate time:
Timebase:
Frequency: 10MHz clock rate; 10MHz crystal(TCXO)
−7
Accuracy: ±5x10 between 10 °C and 40 °C
Aging:
General Information:
Display:
7.65mm height. Sign and Exponent.
Power requirements: 7VA, nominal
Ambient temperature:+10 °C to +40 °C (operation)
Humidity:10%-90%, no condensation, 5%-95% RH
Dimensions (WxHxD):
Weight:
Values without tolerances are meant to be guidelines
and represent characteristics of an average instru-
ment.
DC coupled
AC coupled
20mV (sinewave)
rms
80mV (pulse)
60mV (sinewave)
rms
(sinewave)
rms
<100µV, typical
AC or DC (switch selectable)
1MΩII40pF
x1, x20 (switch selectable)
400V (DC+AC
derated to 8V
100 MHz to 1.6 GHz
30 mV (typ. 20 mV)
100 mV (typ. 80 mV)
50Ω nominal;
5V (DC+AC
:
>2V/<0,5V
−7
s x Freq.) / measuring time
±1 or 2 LSD
10000sec to 66,6ns
−7
s x period / measuring time)
±1 or 2 LSD
DC to 20MHz
±1 Count
100ns to 10ps (averaged)
1 or 2 LSD
100ms to 10s in 3 steps
min. 150µs
±3ppm / 15 years
8 digit 7 segment LED
135 x 68 x 228 mm
approx. 650g
5ns
)
peak
rms
AC
)
peak
4,7kΩ
±30V
50ns
150µs
25ns
LSD
100ns
19