--- a/content/hp3562a_3.rst Thu Nov 05 22:14:33 2020 +0100 +++ b/content/hp3562a_3.rst Thu Nov 05 22:15:16 2020 +0100 @@ -9,7 +9,7 @@ :series_index: 3 This is the part 3 of the series about my -`HP 3562A Digital Signal Analyzer <{static}hp3562a.rst>`_, +`HP 3562A Digital Signal Analyzer <{filename}/hp3562a.rst>`_, quickly describing the Analog Section of the instrument. @@ -26,7 +26,7 @@ Analog Source ------------- -.. image:: {static}images/hp3562a/hp3562a_a30_block_diagram.png +.. image:: {static}/images/hp3562a/hp3562a_a30_block_diagram.png This board is mainly a DAC converting signal signal from the Digital Source board (for sin waves). It also generates Pseudo Random Noise @@ -37,9 +37,9 @@ this is implemented is quite interesting: the analog signal from the main DAC is used a reference voltage for a multiplying DAC. -.. image:: {static}images/hp3562a/a30_analog_source.jpg +.. image:: {static}/images/hp3562a/a30_analog_source.jpg -.. image:: {static}images/hp3562a/a30_analog_source_dac.jpg +.. image:: {static}/images/hp3562a/a30_analog_source_dac.jpg Trigger ------- @@ -49,7 +49,7 @@ possible trigger sources: external, channel 1, channel 2 and the calibration. -.. image:: {static}images/hp3562a/trigger_level.png +.. image:: {static}/images/hp3562a/trigger_level.png The trigger clock circuit produces the 20.48MHz clock using a VCXO. From this signal are derived the 10.24MHz clock used by many @@ -59,15 +59,15 @@ When an external clock is provided, a PLL is used to lock this 20.48MHz. The external signal can be 1, 2, 5 or the standard 10MHz. -.. image:: {static}images/hp3562a/trigger_clock.png +.. image:: {static}/images/hp3562a/trigger_clock.png -.. image:: {static}images/hp3562a/a31_trigger.jpg +.. image:: {static}/images/hp3562a/a31_trigger.jpg Input ADC --------- -.. image:: {static}images/hp3562a/hp3562a_a32_block_diagram.png +.. image:: {static}/images/hp3562a/hp3562a_a32_block_diagram.png The ADC board converts analog data from the input board into 13-bits @@ -78,14 +78,14 @@ from the input (hold) signal and the result is multiplied then digitized a second time to produce the remaining 5-bits of resolution. -.. image:: {static}images/hp3562a/a32_input_adc.jpg -.. image:: {static}images/hp3562a/a32_input_adc_bb.jpg +.. image:: {static}/images/hp3562a/a32_input_adc.jpg +.. image:: {static}/images/hp3562a/a32_input_adc_bb.jpg Input ----- -.. image:: {static}images/hp3562a/hp3562a_a33_block_diagram.png +.. image:: {static}/images/hp3562a/hp3562a_a33_block_diagram.png The input assembly implements the voltage ranges and conditions the input signal. It mostly consist in a pair switch attenuators (the @@ -93,11 +93,11 @@ conditionners. The balanced signal is then fed into a differential amplifier followed by a amplifier and an attenuator. -.. image:: {static}images/hp3562a/a33_input.jpg +.. image:: {static}/images/hp3562a/a33_input.jpg Next ==== -In the `next part <{static}hp3562a_4.rst>`_, we will describe the +In the `next part <{filename}/hp3562a_4.rst>`_, we will describe the HP 1345A Digital Display used in the instrument.