User manual

19
Subject to change without notice
H M 8 1 2 3 S p e c i f i c a t i o n s
Specications
HM8123E/121010 · C&E · Subject to change without notice · © HAMEG Instruments GmbH
®
· DQS-certified in accordance with DIN EN ISO 9001:2008, Reg.-No.: 071040 QM08
HAMEG Instruments GmbH · Industriestr. 6 · D-63533 Mainhausen · Tel [phone] · Fax [phone] · www.hameg.com · [e-mail]
3 GHz Programmable Counter HM8123
All data valid at 23 °C after 30 minutes warm-up.
Input characteristics (Input A and B)
Connection:
BNC socket
Frequency range:
0…200 MHz (DC-coupled)
10 Hz…200 MHz (1 MΩ, AC-coupled)
500 kHz…200 MHz (50 Ω, AC-coupled)
Input impedance:
1 MΩ II 30 pF or 50 Ω (switchable)
Attenuation:
1:1, 1:10, 1:100 (selectable)
Sensitivity: (normal triggering)
0…80 MHz 25 mV
rms
(sine wave), 80 mV
pp
(pulse)
80…200 MHz 65mV
rms
(sine wave)
20 Hz…80 MHz 50 mV
rms
(sine wave, auto trigger)
Trigger (programmable via encoder or software)
Attenuation: Trigger level: Resolution:
1:1 0…±2 V 1 mV
1:10 0…±20 V 10 mV
1:100 0…±200 V 100 mV
Max. input voltage:
Input 1 MΩ:
250 V (DC + AC
peak
) from 0…440 Hz
decreasing to 8 V
rms
at 1 MHz
Input 50 Ω:
5 V
rms
Minimum pulse duration:
<5 ns for single pulse
Input noise:
(typ.) 100 µV
Auto trigger (AC coupling):
trigger point: 50 % of peak-to-peak value
Trigger slope:
Rising or falling
Filter:
100 kHz low-pass filter (switchable)
Input characteristics (Input C)
Connection:
SMA socket
Frequency range:
100 MHz…3 GHz
Input sensitivity:
up to 1 GHz: 30 mV
rms
(typ. 20 mV
rms
)
1…3 GHz: 100 mV
rms
(typ. 80 mV
rms
)
Input impedance:
50 Ω nominal
Max. input voltage:
5 V (DC + AC
peak
)
Input characteristics
External Reset Reference Gate/Arming
Input impedance:
5 kΩ 500 Ω 5 kΩ
Max. input voltage:
±30 V ±20 V ±30 V
Input sensitivity:
- typ. 2 V
pp
-
High level:
>2 V - >2 V
Low level:
<0.5 V - <0.5 V
Min. pulse duration:
200 ns - 50 ns
Input frequency:
- 10 MHz -
Min. eff. gate time:
- - 20 µs
Measurement functions
Frequency A/B/C; period duration A; width A; totalize A; RPM A; frequency
ratio A:B; time interval A:B; time interval A:B (average); phase A to B; Duty
cycle A; burst measurements
Frequency measurement (Inputs A, B, C)
Frequency range:
0…200 MHz (3 GHz)
LSD:
(1.25x 10
-8
s x frequency)/measurement time
Resolution:
1 LSD
Accuracy:
±(resolution/frequency ±time inaccuracy
±trigger error
2)
/measurement time)
Period duration measurement
Range:
5 ns…10,000 s
LSD:
(1.25 x 10
-8
s x period)/measurement time
Resolution:
1 LSD
Accuracy:
±resolution/period
±(trigger error
2)
/measurement time)
Totalization A
(manual control) (external control)
Range:
0…200 MHz 0…200 MHz
Min. pulse duration:
10 ns 10 ns
LSD:
1 count ±1 count
Resolution:
LSD LSD
Accuracy:
(resolution ±ext. gate time error
x frequency A)/total
Pulse resolution:
10 ns 10 ns
Ext. gate error:
- 100 ns
Time interval /Average time interval
(Input A = start; input B = stop)
LSD:
10 ns (0,1 ps…10 ns in „average“ mode)
Resolution:
1 LSD
Accuracy:
±(resolution + trigger error
2)
+ system error)/time interval
±time base uncertainty (system error: ≤4 ns)
Number of average:
N = 1…25 LSD = 10 ns
N = 26…2,500 LSD = 1 ns
N = 2,501…250,000 LSD = 100 ps
N = 250,001…25,000,000 LSD = 10 ps
N = >25,000,000 LSD = 0.1 ps
RPM measurement
NPR
1)
presetting:
1…65,535 pulses per revolution
Gate time:
330 ms fixed
LSD:
7.5x 10
-8
x revolution speed
Resolution:
1 LSD
Accuracy:
±(trigger error
2)
/0.33) ±time base error
Offset
Range:
Covers the entire measurement range
Resolution:
Same resolution as in normal measurement.
If the gate time is changed in the offset mode,
the offset resolution is the reference value
resolution or the current reading resolution
(whichever is less precise).
Gate time
Range:
1 ms…65 s
Resolution:
1 ms
External gate time:
min. 20 µs
Time base
Frequency:
400 MHz clock rate; 10 MHz crystal
Temperature stability
(0…50 °C):
TCXO (standard): ±0,5x 10
-6
OCXO (HO85): ±1x 10
-8
Aging TCXO:
OCXO:
<0.27 ppm per month, 0.05 ppm per day
≤±1x 10
-9
/day
External Reference:
10 MHz ±20 ppm
Miscellaneous
Interface:
USB/RS-232 (HO820), IEEE-488 (optional)
Safety class:
Safety Class I (EN61010-1)
Display:
LCD display (83 x 21 mm)
Power supply:
115…230 V ±10 %, 45/60 Hz, CAT II
Power consumption:
approx. 20 Watt
Operating temperature:
+5…+40 °C
Storage temperature:
-20…+70 °C
Rel. humidity:
5…80 % (non condensing)
Dimensions (W x H x D):
285 x 75 x 365 mm
Weight:
approx. 4 kg
1)
NPR=number of pulses per revolution
2)
Trigger error= ±noise input (V
pp
)/slew rate of the input signal
Accessories supplied: Line cord, Operating manual, software
Recommended accessories:
HO85 OCXO (Installation only ex factory)
HO880 IEEE-488 (GPIB) Interface (galvanically isolated)
HZ13 Interface cable (USB) 1.8 m
HZ14 Interface cable (serial) 1:1
HZ20 Adapter plug
HZ24 Attenuators 50 Ω
HZ33 Test cable 50 Ω (BNC-BNC) 0.5 m
HZ34 Test cable 50 Ω (BNC-BNC) 1.0 m
HZ42 19’’ Rackmount kit 2RU
HZ72 GPIB-Cable 2 m