Tietz camera installation and setup using EM-MENU¶

Many Tietz cameras are controlled by a computer separated from the microscope¶

Please read Using_Leginon_on_a_system_where_the_microscope_and_camera_are_controlled_by_different_computers first.

Extra Package and Installation¶

package	pip installation version
CAMC4.exe	(Should come with the camera)
comtypes for 64-bit machine	1.1.7

install comtypes 1.1.7 from cmd terminal (internet connection needed)
or you can go through steps to save the download on another computer (google search pip download) and then copy it to the scope computer to install.

pip install comtypes==1.1.7

Run updatecom.py¶

• From a command line window:
  

  cd C:\python27\Lib\site-packages\pyscope
  C:\python27\python.exe checkcom.py

• The output sould contain this output
  

  checking TVIPS EmMenu
  Found COM typelib named: EMMENU4.EMMENYApplication.1
  

You can ignore error messages regarding other com modules.

Create Leginon Viewport¶

include{{Create_Leginon_view_port}}

instruments.cfg¶

Current available classes are

##   - tietz2.EmMenuF416
##   - tietz2.EmMenuF416_GPU (gpu functions not implemented
##   - tietz2.EmMenuF216

For example, instruments.cfg for F416 looks like this:

[Tietz Camera]
class: tietz2.EmMenuF416
zplane: 5
height: 4096
width: 4096

• I use zplane of 5 because this is a bottom-mount camera that does not retract. Therefore it is always the lowest.

Setup tvips.cfg¶

• A template for tvips.cfg is in the installed pyscope directory as "tvips.cfg.template". Copy it to
  

  C:\Programs\myami\instruments.cfg

• Unless you plan to use the unreleased recorder functions, just leave that part as default.

Testing with pyscope¶

F416 camera is used in this case

1. Open TVIPS TCL/EMMENU
2. From python command shell or IDLE:

from pyscope import tietz2
t = tietz2.EmMenuF416()
a=t.getImage()
a.shape

You should get (4096,4096) matching the camera dimension.

If you print a, you get

You should expect these to run without error. The getImage() command should give a 2D numpy array like

array([[1000, 3400, 2300, ..., 1000,1200,3000],
         [1000, 3400, 2300, ..., 1000,1200,3000],
         [1000, 3400, 2300, ..., 1000,1200,3000],
         ...,
         [1000, 3400, 2300, ..., 1000,1200,3000],
         [1000, 3400, 2300, ..., 1000,1200,3000],
         [1000, 3400, 2300, ..., 1000,1200,3000],dtype=int16)

The number and dtype depends on the camera.

a.shape command should give a tuple of the camera dimension matching your camera.
For example, (4096,4096)

If you use python shell to do this test, some of the error will cause the shell window to close immediately. Use Python IDLE instead in that case

Trouble shooting¶

Programs to open before Leginon Client: None. EMMENU must be opened¶