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phaser: clarify J1 termination; scope configuration 

* spacing, spelling, wording

Signed-off-by: Robert Jordens <rj@m-labs.hk>
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Joe Britton 2017-01-11 17:32:36 -05:00 committed by Robert Jordens
parent 6805feb494
commit 93a71b9f77
1 changed files with 2 additions and 2 deletions
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README_PHASER.rst
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@ -88,8 +88,8 @@ Setup
* Refer to the ARTIQ documentation to configure an IP address and other settings for the transmitter device.
If the board was running stock ARTIQ before, the settings will be kept.
* A 300 MHz clock of roughly 10 dBm (0.2 to 3.4 V peak-to-peak into 50 Ohm) must be connected to the AD9154-FMC-EBZ J1.
The RTIO clock, DAC deviceclock, FPGA deviceclock, and SYSREF are derived from this signal.
* A 300 MHz clock of roughly 10 dBm (0.2 to 3.4 V peak-to-peak into 50 Ohm) must be connected to the AD9154-FMC-EBZ J1. The input is 50 Ohm terminated. The RTIO clock, DAC deviceclock, FPGA deviceclock, and SYSREF are derived from this signal.
* Configure an oscilliscope to trigger at 0.5 V on rising edge of ttl_sma (user_gpio_n on the KC705 board). Monitor DAC0 (J17) on the oscilloscope set for 100 mV/div and 200 ns/div.
* An example device database, several status and test scripts are provided in ``artiq/examples/phaser/``. ::
cd artiq/examples/phaser