Sandy Horton-Smith has written a brief summary of the scope panels that control the new Tek680B scopes that are gradually replacing the obsolete Tek 2467B analog scopes. The Tek 680B is the only high bandwidth digital scope available that can trigger at close to 120Hz. There will be a manual in the control room area.

The Tektronix 680B and 780A series Oscilloscopes

Scope panels:

1. Main panel

Contains buttons for display parameters such as intensity and display style. On/off for all channels. Acquire mode and run/stop. Acquire mode sample is nominal. Buttons to go to all other panels.

2. Channel 1 & 2 control panel

Horizontal controls for channels 1 and 2 - volts/div, impedance, coupling, bandwidth, offset. Nominal impedance is 50 ohm; nominal coupling is DC. Also math displays on/off. Math1 is defined as Ch1+Ch2; Math2 as Ch1-Ch2; Math3 as 1/Ch1 - but these can be redefined.

3. Aux 1 & 2 control panel

Same as channel 1 & 2 control for next 2 channels. You can only have 2 channels on at one time with the 680B scopes.

4. Time control panel

Vertical controls - time/div, positioning, some triggering functions, set record length (500, 1000, 2500, etc. points). The time/div given on the buttons corresponds to 500 point record length, so 500 is the normal value to use. With different record length, these buttons behave differently. Pretrigger position determines how much of the trace gets displayed from before the trigger. Nominal pretrigger is 0.

5. Trigger control panel

Trigger set-up - level, mode, edge, coupling, source. Some delay trigger set-up - part of the fancy trigger stuff with these scopes, not part of the standard setup.

6. Reference and setup control panel

Save channels to reference trace, turn references on/off. Save and recall scope setups.

7. Cursor control

Cursors on/off - horizontal, vertical and paired cursors. Units for horizontal cursor position is in volts and for vertical cursor position is in time. Select channel, reference, or math display that determines cursor measurement.

8. Measurement panel

Choose measurement source from channels, references, or math. Choose measurement to perform, e.g. period, frequency, amplitude, peak to peak. Query for measurement value and units.

9. Zoom control panel

Select active channel. Turn zoom mode on/off, dual zoom on/off. Zoom displays a section of the trace. Zoom preview shows two screens - one the original trace and the other what will be displayed in the zoom screen.

North/ South Kicker scopes:

The kicker scopes are TDS680B scopes. There are a set of button macros for each scope which all perform the following functions (not necessarily in this order):

1. Deactivate scope trigger on all beams
2. Activate trigger on some beams at a certain time (varies by macro)
3. Reset GPIB bus
4. Recall scope set-up. The set-up numbers are given on the last line of the button. While the scope is performing the recall, a clock image will appear on the scope face.
5. Print a message to the scope face indicating N(orth) or S(outh), Inj or Ext and the signal name.
6. Push the appropriate mux signal button.
7. Activate trigger on beam code 10 or 11 with appropriate timing.