Specifi Cations - Rohde & Schwarz Hameg HM8123 Handbuch

3 GHz Programmable Counter HM8123
Valid at 23 °C after a 30 minute warm-up period
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 to 80 MHz 25 mV
80 MHz to 200 MHz 65 mV
20 Hz to 80 MHz 50 mV
Trigger (programmable via encoder or software)
Attenuation: Trigger level:
1:1 0 to ± 2 V
1:10 0 to ± 20 V
1:100 0 to ± 200 V
Max. input voltage:
Input 1 MΩ: 250 V (DC + AC
decreasing to 8 V
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: positive or negative
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:
1 GHz–3 GHz:
Input impedance: 50 Ω nominal
Max. input voltage: 5 V (DC + AC
Input characteristics
External Reset
Input impedance: 5 kΩ
Max. input voltage: ± 30 V
Input sensitivity: -
High level: › 2 V
Low level: ‹ 0.5 V
Min. pulse duration: 200 ns
Input frequency: -
Min. eff. gate time: -
Measurement functions
Frequency A/B/C; period duration A; width A; duty cycle 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 to 200 MHz (3 GHz)
LSD: (1.25 x 10
Resolution: ± 1 or 2 LSD
Accuracy: ± (resolution / frequency ± time inaccuracy
± trigger error
Period duration measurement
Range: 10000 sec. to 5 ns
LSD: (1.25 x 10
Resolution: 1 or 2 LSD
Accuracy: ± resolution / period
± (trigger error
Totalization A
(manual control)
Range: 0 – 200 MHz
Min. pulse duration: 10 ns
LSD: 1 count
Resolution: LSD
Accuracy: (resolution ± ext. gate time error x
frequency A)/total
(sine wave), 80 mV (pulse)
pp
rms
(sine wave)
rms
(sine wave, auto trigger)
rms
Resolution:
1 mV
10 mV
100 mV
) from 0 to 440 Hz
peak
at 1 MHz
rms
30 mV (typ. 20 mV
rms rms
100 mV (typ. 80 mV
rms rms
)
peak
Reference Gate/Arming
500 Ω 5 kΩ
± 20 V ± 30 V
typ. 2 V -
pp
- › 2 V
- ‹ 0.5 V
- 50 ns
10 MHz -
- 20 μs
-8 s x frequency) / measurement time
2) / measurement time)
-8
s x period) / measurement time
2)
B / measurement time)
(external control)
0 – 200 MHz
10 ns
± 1 count
LSD
Pulse resolution:
Ext. gate error:
Time interval / Average time interval
(Input A = start; input B = stop)
LSD:
Resolution:
Accuracy:
Number of average:
RPM measurement
NPR 1) presetting:
Gate time:
LSD:
Resolution:
Accuracy:
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:
Resolution:
External gate time:
Time base
)
Frequency:
)
Temperature stability
(0 to 50 °C):
Ageing:
External Reference:
Miscellaneous
Interface:
Safety class:
Display:
Power supply:
Power consumption:
Operating temperature:
Max. relative humidity:
Dimensions (W x H x D):
Weight:
1) NPR=number of pulses per revolution
2)
Trigger error= ± noise input (V
Accessories supplied: Operator's Manual and power cable
Optional accessories:
HZ42 19" Rackmount kit 2RU
HZ33/34 Test cable 50 Ω (BNC-BNC)
HZ24 Attenuators 50 Ω
HZ20 Adapter plug
HO870 USB Interface
HO880 IEEE-488 (GPIB) Interface
OCXO (Installation only ex factory, Type HM8123X)
S p e c i f i c a t i o n s
10 ns 10 ns
- 100 ns
10 ns (10 ns to 1 ps in "average" mode)
1 LSD (1 or 2 in "average" mode)
2)
± (resolution + trigger error + system error) /
time interval ± time basis uncertainty
(system error: ≤ 4 ns)
N = 1-25 LSD = 10 ns
N = 26-2500 LSD = 1 ns
N = 2501-250000 LSD = 100 ps
N = 250001 – 25000000 LSD = 10 ps
N = › 25000000 LSD = 1 ps
1 – 65535 pulses per revolution
330 ms fixed
7.5 x 10 -8 revolution speed
1 or 2 LSD
± (trigger error 2) / 0.33) ± time basis error
1 ms – 65 sec.
1 ms
min. 20 μs
400 MHz clock rate; 10 MHz crystal
TCXO (standard): ± 0,5 x 10 -6
OCXO (type HM8123X): ± 1 x 10 -8
‹ 0.27 ppm per month, 0.05 ppm per day
10 MHz ± 20 ppm
RS-232 (serial), IEEE-488, USB (optional)
Safety Class I (EN61010-1)
LCD display (83 x 21 mm)
115/230 V ± 10 %, 45–60 Hz
approx. 20 Watt
+10 °C to +40 °C
10 %–90 % (without condensation),
5 %–95 % RH
285 x 75 x 365 mm
approx. 4 kg
) / slew rate of the input signal
pp
Subject to change without notice
19