Agilent Technologies, Inc.
DisplayPort Test Implementation Group 11 Agilent J-BERT N4903B & 90000A/X/Q Series Sink Draft2
Note: The introduction to each step is the method described in the PHYCTS 1.2b for
HBR/HBR2 is in italics. The sub-steps to each numbered step are the detailed procedure.
RBR calibration is very similar to HBR/HBR2 calibration except that all calibration is
done at TP3 instead of TP3_EQ, so it is described as such in each setup.
9.1 ISI Verification
1. The SSG shall be turned on with amplitude set to differential and shall be AC coupled. An attenuator
shall be used to maintain sufficiently large amplitude coming from the SSG so to stay out of the noise
floor of the SSG.
a. Ensure J-BERT N4903B and DSA have reached temperature and have been calibrated as
described in the pretest procedure above.
b. Make sure the J-BERT N4903B Data Signals are turned off while making connections.
c. Connect the following Channel for each of the bit rates from DATA/DATA# of the J-BERT
N4903B:
Connected from
DATA/DATA# Output of
JBERT-B, add the following
components in the order listed:
2 ea. DC Blocks
1 Meter Phase Matched *
ISI Channel, e.g. N4915A-006
(TP3 RBR Connections) with
150ps 20% to 80% TTCs.
1 Meter Phase Matched *
1 ea. VESA Approved DP Plug
Adapter
1 ea. VESA Approved DP
Receptacle Fixture
2 ea. SMA-Male to SMA-Male
Adapters (or short cables if
required by fixture design)
Connected to CH1/CH3 of
Scope
Connected from
DATA/DATA# Output of
JBERT-B, add the following
components in the order listed:
2 ea. DC Blocks
1 Meter Phase Matched *
ISI Channel, e.g.:
• 24” ISI Channel (Opt. J20)
with 60ps 10% to 90%
TTCs in combination with
Wilder plug fixture
• 20” ISI Channel (Opt. J20)
with 100ps 10% to 90%
TTCs in combination with
Agilent plug fixture
1 Meter Phase Matched
Cables*
1 ea. VESA Approved DP Plug
Adapter
1 ea. VESA Approved DP
Receptacle Fixture
2 ea. SMA-Male to SMA-Male
Adapters (or short cables if
required by fixture design)
Connected to CH1/CH3 of
Scope
Connected from DATA/DATA#
Output of JBERT-B, add the
following components in the
order listed:
2 ea. DC Blocks
1 Meter Phase Matched *
ISI Channel, e.g.:
• 32” ISI Channel (Opt. J20)
with 60ps 10% to 90% TTCs
in combination with Wilder
plug fixture
• 28” ISI Channel (Opt. J20)
with 100ps 10% to 90%
TTCs in combination with
Agilent plug fixture
1 Meter Phase Matched Cables*
1 ea. VESA Approved DP plug
Fixture.
1 ea. Wilder DP Receptacle
Fixture
2 ea. SMA-Male to SMA-Male
Adapters (or short cables if
required by fixture design)
Connected to CH1/CH3 of Scope
* ISI is highly dependent on the type, length, and quality of the cables used for testing.
It is recommended to adjust cable lengths or add SMA connectors to the channel as
needed to ‘fine tune’ the ISI to the target value +/- 5%. Alternatively the ISI can be
(124 paginas)
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