Introduction and Specifications
Specifications 1
1-19
Frequency Counter Specifications
Input
96270A
Rear-panel BNC connector (300 MHz Counter).
Input impedance selectable 50 Ω (dc coupled) or 10 kΩ
[1]
(ac coupled), nominal.
AC coupled into 0 V threshold.
96040A
Rear-panel BNC connector (50 MHz Counter, Modulation, Leveling and Frequency
Pull Input).
Input impedance 10 kΩ
[1]
(ac coupled), nominal.
AC coupled into 0 V threshold.
Frequency
Range
96270A 0.9 MHz to 310 MHz for specified accuracy. Functional to 10 Hz, typical
96040A 0.9 MHz to 50.1 MHz for specified accuracy. Functional to 10 Hz, typical
Frequency
Bands
96270A
Only
0.9 MHz to 50.5 MHz, >50.5 MHz to 310 MHz with 50 Ω selected.
0.9 MHz to 50.5 MHz with 10 kΩ
[1]
selected.
Input Level
0.5 V pk-pk minimum operating, ±5 V pk absolute maximum
Gate Times and Resolutions
[2]
(in displayed digits)
0.2 s: 7/8 digits, 2 s: 8/9 digits, 20 s: 9/10 digits, 80 s: 10/11 digits
Accuracy
Gate Time
Internal Frequency
Reference
External Frequency Reference
0.2 s, 2 s, 20 s
±0.05 ppm ±0.5 count Ext Freq Ref Accuracy ±0.5 count
80 s
±0.05 ppm ±1.25 counts Ext Freq Ref Accuracy ±1.25 counts
[1] Higher frequencies into 10 kΩ impedance may require an external 50 Ω termination fitted to the 96040A frequency counter BNC,
depending on signal matching, or for 96270A, the 50 Ω input impedance setting may be required.
[2] Frequencies are automatically displayed in units of Hz, kHz or MHz. Number of digits depends on gate time selected and display
auto-ranging points, arranged in decades at 1 099 999 9(99 9) / 1 100 000 (000).
Power Meter Readout Specifications (96270A only)
Supported Sensors
Rhode & Schwarz NRP-Z series thermal sensor models 51, 52, 55.03, 55.04,
56, 57 and 58
Sensor Channels
Two front panel mounted mini-ODU connectors, compatible with supported
sensor models.
User selectable as power meter readout or leveling control sensor feedback
[1]
Readout/Measurement Functionality
Single or Dual readout, user selectable as power or equivalent voltage into 50 Ω,
with linear or logarithmic units.
Source/Measure mode allows simultaneous signal output and single/dual power
meter readout operation.
Relative ratio or difference mode.
[2]
Readout Display
Absolute: In W, Vrms, Vpk-pk, dBm, dBuV
Relative: ratio in dB or Δ%, difference in W or V
Resolution: 0.001 dBm/dB; W/V/%, 5 digits with autoranging unit multiplier
User-selectable Settings/Actions Reading averaging, single/continuous triggering, sensor zeroing.
[1] When used as the leveling control sensor for the Microwave Output with the HF Leveling kit or compatible splitter and sensor, the
measured power is displayed. Settings are automatically configured for optimal performance.
[2] Absolute/Relative mode independently selectable for each readout channel. Relative measurements between channels is not
available.
GPIB Command Emulation Mode Specifications
96270A
[1] [2]
HP3335A,HP8662A, HP8663A, HP8340A,HP8360 B-Series, Agilent E8257
Series, 9640A.
96040A
[1]
HP3335A, HP8662A, HP8663A, 9640A
[1] Only one instrument emulation mode may be selected at any one time.
[2] Emulation includes models with frequency ranges above 27 GHz. These models are emulated within the frequency capabilities of
the 96270A.
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