small typos in afe.rst

Author: kcaisley

docs/source/afe.rst

@@ -165,7 +165,7 @@ Exercises
 
 The pre-lab exercises (Exercise 0) are questions which must be answered before coming to the lab, with the method of your choosing, although Latex may be preferable to avoid duplicating effort with the report.
 
-The in-lab exercises (Exercise 1-3) are grouped into three section. In the first part the basic functionality of the analog front-end is tested. This is accomplished by implementing a script to enable the charge injection and to observe waveforms of the charge sensitive amplifier, shaper, and comparator with an external oscilloscope and/or the fast ADC on the Raspberry Pi base board. In the second part methods to extract analog performance parameters from the digital hit information will be developed. Finally, the full analog signal processing chain will be characterized as a function of shaping time and detector capacitance. 
+The in-lab exercises (Exercises 1-3) are grouped into three section. In the first part the basic functionality of the analog front-end is tested. This is accomplished by implementing a script to enable the charge injection and to observe waveforms of the charge sensitive amplifier, shaper, and comparator with an external oscilloscope and/or the fast ADC on the Raspberry Pi base board. In the second part methods to extract analog performance parameters from the digital hit information will be developed. Finally, the full analog signal processing chain will be characterized as a function of shaping time and detector capacitance. 
 
 .. admonition:: Exercise 0: Pre-lab questions
 
@@ -183,6 +183,7 @@ The in-lab exercises (Exercise 1-3) are grouped into three section. In the first
   #. Draw an optimum threshold in your amplitude histogram.
   #. The term 'equivalent-noise-charge' (ENC) represents the quantity of electrons at the input of an ideal (i.e. noise-free) signal chain that would produce the same  amplitude at the output as the noise alone would in a real system. What is the ENC value for a noise amplitude of 10 mV given the charge sensitivity calculated above?
 
+
 .. admonition:: Exercise 1. Characterizing an analog front-end
 
   The first set of exercises is intended to familiarize you with the analog front-end hardware and the control software. The goal is to observe the different signals of the analog front-end chain (CSA, SHA, COMP) and to understand the effect of the different circuit parameters on the signal shape. To monitor the signal waveform, connect an oscilloscope to the LEMO socket **OUTPUT**. Use the jumper bank in front of the LEMO socket to select the signal to be monitored manually (**CSA, HPF, SHA, COMP**) or use the setting **MUX** to select the signal to be monitored via your program code with the **SPI** interface. Note: As mentioned in the circuit description above, the shaper circuit adds a total gain of 1000 to the CSA output signal. This gain is split in three gain stages with G=10 that are distributed along the signal chain in front of the **CSA**, the **HPF**, and the **SHA** output, respectively. The **CSA** output is amplified by 10, the **HPF** accumulated amplification is 100 and the shaper output **SHA** finally accumulates the total gain of 1000.