Universal Counter Hm8021 - Hameg Instruments HM 8021-3 Manuel

Universal Counter HM8021-3

I
Frequency Range: DC to 1.6GHz
I
Sensitivity: 20mV
I
7 Measuring Functions
I
3 Selectable Gate Times; External Gate
I
8 Digit LED-Display + Sign + Exponent
I
Temperature-Compensated Time Base (TCXO) 5x10
I
Selectable Autotrigger
With over 15,000 units sold in Europe, the
HM8021-3 brought new dimensions to the
price/performance ratio available in universal
counters. With this new model, HAMEG con-
tinues 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 1.6GHz.
The reciprocal frequency measurement
technique provides high resolution of low
frequency signals with at least seven sig-
nificant digits for a 1s measurement duration.
The HM8021-3 is equipped with an extremely
stable temperature compensated crystal
oscillator (TCXO) with a stability of 0.5 parts
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 150MHz (DC coupled),
10Hz to 150MHz (AC coupled)
Sensitivity: (normal triggering)
20mV (sinewave) DC to 80MHz, 80mV (pulse)
rms
60mV (sinewave) 80MHz to 150MHz
rms
50mV (sinewave) 20Hz to 80MHz,(autotrigger)
rms
Min. pulse duration: 5ns
Input noise: <100µV, typical
Coupling: AC or DC (switch selectable)
Input impedance: 1MΩII40pF
Attenuator: x1, x20 (switch selectable)
Max. input voltage:
250V (DC+AC ) from 0 to 440Hz
peak
derated to 8V at 1MHz
rms
Input Characteristics: (Input C)
Frequency range: 100MHz to 1.6GHz
Sensitivity: 30mV to 1.3GHz (typ. 20mV)
100mV to 1.6GHz (typ. 80mV)
Input impedance: 50Ω nominal; Coupling: AC
Max. input voltage: 5V (DC+AC
Input Characteristics: (External Gate)
Input impedance: 4,7kΩ
Max. input voltage: ±30V
High-/Low-Level: >2V/<0,5V
Min. pulse duration: 50ns
Min. eff. gate time: 150µs
Frequency A:
−7
LSD: (2.5x10 s x Freq.) / measuring time
Resolution: ±1 or 2 LSD
Sous réserve de modifications / Reservado el derecho de modificación
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 HM8021-3 provides variable
trigger control, offers selectable 20dB
attenuation and AC or DC coupling to simplify
measurements on complex signals.
When comparing the HM8021-3 to other
instruments of it's price range you can easily
see what makes the HM8021-3 such an
outstanding value.
Period A:
Range: 10000sec to 66,6ns
LSD: (2,5x10
Resolution: ±1 or 2 LSD
Totalize A: (manually / gated by external signal)
Range:
Min. pulse duration:
LSD:
Resolution:
Ext. Gate error: (in manual mode only) 100ns
Time Interval:
LSD: 100ns to 10ps (averaged);
Resolution: 1 or 2 LSD
Offset:
Range: same specification as normal measurement
Gate Time:
Range: 100ms to 10s in 3 steps
External gate time: min. 150µs
Timebase:
Frequency: 10MHz clock rate; 10MHz crystal (TCXO)
Accuracy: ±5x10
Aging: <2.5ppm / year
General Information:
Display: 8 digit 7 segment LED
Power requirements: 7VA, nominal
)
peak
Ambient temperature: +10°C to +40°C (operation)
Humidity: 10%-90%, no condensation, 5%-95% RH
Dimensions: 135x68x228mm (WxHxD)
Weight: approx. 650g
Values without tolerances are meant to be
guidelines
and represent characteristics of the average
instrument.
− − − − − 7
−7
s x period / measuring time)
DC to 20MHz
±1 Count
(cannot be shorter than 1 period)
−7
between 10°C and 40°C
7.65mm height. Sign and Exponent.
25ns
LSD
13