Omicron Lab Bode 100 User manual

Smart Measurement Solutions®
Bode 100 - Information
Detailed Functional & Calibration Check of
Bode 100
Table of Contents
1CHECK OF FACTORY CALIBRATION ..............................................................................................................2
1.1 TEST OF OUTPUT SIGNAL SHAPE ...................................................................................................................................2
1.2 ACCURACY OF OUTPUT FREQUENCY.............................................................................................................................4
1.3 ACCURACY OF OUTPUT LEVEL.......................................................................................................................................6
1.4 ACCURACY OF GAIN/PHASE FACTORY CALIBRATION....................................................................................................7
1.5 NOISE FLOOR /CHANNEL ISOLATION...........................................................................................................................10
1.6 ACCURACY OF IMPEDANCE CALIBRATION....................................................................................................................12
1.7 QUICK CHECK OF ATTENUATORS.................................................................................................................................14
1.8 CHECK OF ATTENUATOR CORRECTION........................................................................................................................16
1.9 QUICK CHECK OF AC COUPLING CAPACITORS AT INPUT CHANNELS 1&2.................................................................18
1.10 CHECK OF INTERNAL CONNECTIONS &OUTPUT IMPEDANCE....................................................................................19
2CALIBRATION SERVICE...................................................................................................................................20
By Bernhard Baumgartner & Tobias Schuster
© 2008-2020 by OMICRON Lab –V4.0
Visit www.omicron-lab.com for more information.
Contact [e-mail] for technical support.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 2 of 21
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1 Check of factory calibration
The following checks will help you to decide if it is required to send the Bode 100 to OMICRON Lab
for calibration.
Note: It is assumed that the user manual of the Bode 100 was read and understood prior the
measurements described in this document are executed. If you do not have a manual at
hand you can download it at https://www.omicron-lab.com/downloads/vector-network-
analysis/bode-100/.
1.1 Test of output signal shape
Measurement Setup:
Please connect the Source output of Bode 100 to an oscilloscope
Equipment Setup:
Please select the measurement type “Gain / Phase”, select the source settings as follows and start a
continuous measurement:
Frequency: 10 MHz - Fixed
Output level: 0 dBm
Figure 2: test signal shape - measurement type setting
Figure 1: test signal shape - connection setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
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Figure 3: test signal shape - measurement settings
Figure 4: test signal shape - start continuous measurement
Expected Measurement result:
Figure 5: test signal shape - expected result
Waveform: sinusoidal
Vpeak-peak: ~ 1.26 Volts (more accurate measurement follows)
Frequency: ~ 10 MHz (more accurate measurement follows)
If the waveform looks nice, the source amplifiers are working properly.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 4 of 21
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1.2 Accuracy of output frequency
Measurement Setup:
Please connect the output of the Bode 100 to a frequency counter which is locked to a high stable
frequency normal (e.g. Rubidium, GPS etc.).
Figure 6: output frequency accuracy - connection setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 5 of 21
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Equipment Setup:
Please select the measurement type “Gain / Phase”, select the source settings as follows and start a
continuous measurement:
Frequency: 10 MHz - Fixed
Output level: 0 dBm
Figure 7: output frequency accuracy - measurement type setting
Figure 8: output frequency accuracy - measurement setting
Figure 9: output frequency accuracy - start continuous measurement
Expected Measurement result:
Measured frequency: 10 MHz
Maximum tolerance for Bode 100 Revision 1:
± 15 ppm ≙± 150 Hz @ 10 MHz (< 1 year after adjustment)
± 25 ppm ≙± 250 Hz @ 10 MHz (< 3 years after adjustment)
Maximum tolerance for Bode 100 Revision 2:
± 2 ppm ≙± 20 Hz @ 10 MHz (< 1 year after adjustment)
± 4 ppm ≙± 40 Hz @ 10 MHz (< 3 years after adjustment)
If you measure a higher frequency deviation, please send the Bode 100 in for calibration / adjustment.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 6 of 21
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1.3 Accuracy of output level
Measurement Setup:
Please connect the Source output of Bode 100 to a calibrated 50 Ωpower meter.
Figure 10: output level accuracy - connection setup
Equipment Setup:
Please select the measurement type “Gain / Phase”, select the source settings as follows and start a
continuous measurement:
Frequency: 1 MHz –Fixed (or whatever frequency your power meter is made for)
Output level: 0 dBm / 13 dBm / -27 dBm
Figure 11: output level accuracy - measurement type setting
Figure 12: output level accuracy - measurement settings
Figure 13: output level accuracy - start continuous measurement

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 7 of 21
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Expected Measurement result:
Measured output power: 0 dBm / 13 dBm / - 27 dBm
Measured output power tolerance @ 23°C ± 5°C:
max. ± 0.3 dB (1 Hz to < 1 MHz)
max. ± 0.6 dB (1 MHz to 40 MHz for Bode 100 R1)
max. ± 0.6 dB (1 MHz to 50 MHz for Bode 100 R2)
If you measure a higher power deviation, please send in the Bode 100 for calibration / adjustment.
1.4 Accuracy of Gain/Phase factory calibration
Measurement Setup:
Connect the Source of Bode 100 to the two inputs using the cables and the
T-BNC Adapter delivered with Bode 100.
Figure 14: gain/phase accuracy - connection setup
Equipment Setup:
Please select the measurement type “Gain / Phase” and apply the following settings in the hardware
setup:
Figure 15: gain/phase accuracy - gain/phase measurement
Figure 16: gain/phase accuracy - open hardware setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
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Figure 17: gain/phase accuracy - hardware setup
Figure 18: gain/phase accuracy - measurement settings
Then start a single measurement.
Figure 19: gain/phase accuracy - start single sweep
For better visibility change the chart setup to “one axis per chart” as well as set the trace settings as
can be seen below:
Figure 20: gain/phase accuracy - chart setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 9 of 21
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Figure 21: gain/phase accuracy - trace settings
Expected Measurement results:
Gain: 0 dB
Tolerance: max. ± 0.2 dB from 1 Hz to 50 MHz
Phase: 0°
Tolerance: max ± 3° from 1 Hz to 50 MHz
If you measure a higher gain/phase deviation please send in the Bode 100 for calibration /
adjustment.
The following measurement results are an example and can be slightly different from the
measurement with other devices.
Figure 22: gain/ phase accuracy –magnitude (dB) measurement

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 10 of 21
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Figure 23: gain/phase accuracy - phase (°) measurement
1.5 Noise floor / Channel isolation
Measurement Setup:
Disconnect all BNC cables from Bode 100.
Do not connect anything to the front side BNC connectors!
Equipment Setup:
Please select the measurement type “transmission / reflection” and apply the following settings:
Figure 24: dynamic range / isolation - transmission / reflection measurement

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 11 of 21
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Figure 25: noise floor / isolation –measurement & trace settings
After that, start a single measurement.
Figure 26: dynamic range / isolation - start single sweep
Expected Measurement results:
Gain: max. - 100 dB for 1 Hz to 50 MHz
If you measure a gain higher than -100 dB please send in the Bode 100 for calibration / adjustment.
Figure 27: noise floor / isolation –magnitude (dB) measurement

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 12 of 21
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1.6 Accuracy of impedance calibration
Measurement Setup:
Connect the 50 Ω BNC Load connector to the output of the Bode 100.
Figure 28: impedance accuracy - connection setup
Equipment Setup:
Please select the measurement type “one-port” and apply the following settings:
Figure 29: impedance accuracy - measurement type

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 13 of 21
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Figure 30: impedance accuracy - measurement & trace settings
Expected Measurement results:
Reflection: max. - 35 dB for 1 Hz to 50 MHz
Figure 31: impedance accuracy –reflection magnitude (dB) measurement
If you measure a higher reflection than -35 dB please re-start the Internal Device Calibration and re-
perform this test. If this does not help, please send the Bode 100 in for calibration / adjustment.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 14 of 21
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1.7 Quick check of attenuators
By having a look at the level indicators in the lower right corner of the status bar a quick check of the
input attenuators can be performed. This is just a qualitative check that proves that the attenuators do
their job in general.
Measurement setup:
Connect the Source of Bode 100 to the two inputs using the cables and the T-BNC Adapter delivered
with Bode 100.
Figure 32: quick check attn. - measurement setup
Equipment setup:
Please select the measurement type “Gain / Phase” and apply the following settings in the hardware
setup:
Figure 33: quick check attn. - measurement type
Figure 34: quick check attn. –open and change hardware setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 15 of 21
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Figure 35: quick check attn. - measurement settings
Expected Measurement results:
Press the “continuous measurement” button and check if the results fit the expected results below:
Attenuator
CH1
Attenuator
CH2
Expected Result
0 dB
0 dB
10 dB
10 dB
20 dB
20 dB
30 dB
30 dB
40 dB
40 dB

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 16 of 21
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1.8 Check of attenuator correction
This chapter shows how to do a rough check of the attenuator correction.
Measurement setup:
Connect the Source of Bode 100 to the two inputs using the cables and the T-BNC Adapter delivered
with Bode 100.
Figure 36: test attenuators - measurement setup
Equipment setup:
Please select the measurement type “Gain / Phase” and apply the following settings in the hardware
setup:
Figure 37: test attenuators - measurement type
Figure 38: test attenuators –measurement settings and hardware setup

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 17 of 21
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Then start a single measurement for each attenuator setting as seen below.
ATTENTION:
The Level needs to be -10 dBm to avoid an overload at the input of Bode 100.
Expected Measurement results:
Attenuator CH1
Attenuator CH2
Expected Result
0 dB
0 dB
Gain: 0dB
Tolerance: max. ± 0.2 dB for 1 Hz to 50 MHz
Phase: 0°
Tolerance: max ± 3° for 1 Hz to 50 MHz
10 dB
10 dB
20 dB
20 dB
30 dB
30 dB
40 dB
40 dB
0 dB
10 dB
Gain: 0dB
Tolerance: max. ± 0.2 dB for 1 Hz to 50 MHz
Phase: 0°
Tolerance: max ± 4° for 1 Hz to 50 MHz
0 dB
20 dB
0 dB
30 dB
0 dB
40 dB
10 dB
0 dB
10 dB
20 dB
10 dB
30 dB
10 dB
40 dB
20 dB
0 dB
20 dB
10 dB
20 dB
30 dB
20 dB
40 dB
30 dB
0 dB
30 dB
10 dB
30 dB
20 dB
30 dB
40 dB
40 dB
0 dB
Gain: 0dB
Tolerance: max. ± 0.3 dB for 1 Hz to 50 MHz
Phase: 0°
Tolerance: max ± 6° for 1 Hz to 50 MHz
40 dB
10 dB
40 dB
20 dB
40 dB
30 dB
If you measure a higher gain/phase deviation, please send the Bode 100 in for calibration.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 18 of 21
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1.9 Quick check of AC coupling capacitors at input channels 1 & 2
Measurement Setup:
Figure 39: DC-Block - measurement setup
Attention:
Make sure that the 50 Ohm termination of CH1 and CH2 are switched OFF before you
connect the DC voltage. Otherwise the inputs of the Bode 100 will be destroyed!
Please use a DC Voltage Supply with low ripple and noise to avoid overload caused by the ripple on
the DC voltage.
Equipment setup:
First, select the measurement type “Gain / Phase” and start a continuous measurement.
Figure 40: DC- Block –measurement type
Afterwards, connect the 12 VDC and switch it on.
Expected Measurement result:
A short overload might appear when switching on the 12 VDC (up to 2 seconds).
No continuous OVERLOAD should occur.

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 19 of 21
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1.10 Check of internal connections & output impedance
In the following, the internal connections from the receivers to the 50 Ω output impedance are tested.
Additionally, the output of the Bode 100 will be checked.
Measurement Setup:
OPEN:
SHORT:
LOAD
(50 Ω):
Equipment Setup:
Figure 41: Internal connection check - measurement mode
Use the “One-Port” impedance measurement method and set the frequency to “Fixed” as well as
follows:
Figure 42: Internal connection check - measurement settings

Bode 100 - Information
Detailed Functional & Calibration Check of Bode 100
Page 20 of 21
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After that, please start a continuous sweep.
Expected measurement results:
Receiver levels should look similar to the following when source frequency is set to 1 kHz:
OPEN
SHORT
LOAD (50 Ω)
In the following, the source frequency must be changed between 1 kHz and 100 kHz.
1 kHz
100 kHz
OPEN
>85 kΩ (typ. 100 kΩ)
>75 kΩ (typ. 90 kΩ)
SHORT
<20 mΩ (typ. 10 mΩ)
<50 mΩ (typ. 10 mΩ)
LOAD (50 Ω)
<51 Ω & >49 Ω (typ. 50 Ω)
<51 Ω & >49 Ω (typ. 50 Ω)
2 Calibration service
ISO9001 Factory Calibration
Calibration and adjustment of the Bode 100 is performed in our ISO 9001-2008 certified development
center. If a unit is sent in for calibration, we perform a complete factory calibration including
adjustment like during manufacturing. This ensures that the Bode 100 has the same accuracy as
when it was manufactured.
IEC17025 Calibration
Together with an external calibration lab we offer an ISO/IEC17025 calibration as an add-on to our
factory calibration.
For further information please contact our support team: [e-mail]