Differences

This shows you the differences between two versions of the page.

--- hv [2023/11/24 12:51] – reno
+++ hv [2023/12/01 14:23] (current) – andrew
@@ Line 1: / Line 1: @@
-===== HV =====
+===== High Voltage Test (HV) =====
-=== High Voltage Test (SB¹) ===
+The high voltage test is used to determine the PMT response depending on the voltage provided to it. Upon entering the HV command, you will be prompted with the following.
+<konsole>
+Measure Voltage at HV Input
+ Enter photomultiplier serial number: (default 026)
+ Enter preamp voltage level: (default -30)
+ Enter min voltage: (default 1000)
+ Enter max voltage: (default 1600)
+ Enter increment: (default 50)
+</konsole>
+The defaults may change from instrument to instrument, however those defaults values can be overridden by entering a different value and pressing enter. See [[hv#suggested_values|here]] for some suggested values. Once completed, move on to [[hv#high_voltage_test_sb|HV for single boards]] or [[hv#high_voltage_test_mb|HV for multiboard]] electronics.
-The HV command invokes a test used to determine the optimum high voltage setting for the photomultiplier. Once the instrument is properly setup (see Appendix F - jumper J2 on the high voltage module must be moved from Pins 2-3 to Pins 1-2 after the Brewer power is turned off, then the power returned to perform the test.  After the test is performed the brewer power must again be turned off and the jumper J2 on the high voltage module must be returned from Pins 1-2 back to Pins 2-3, and then the power restored for normal operation).  The HV command starts an automatic high voltage test and writes the results to HVJJJYY.III.\\
+==== High Voltage Test (SB¹) ====
+The HV command invokes a test used to determine the optimum high voltage setting for the photomultiplier. The instrument has to be properly setup before the test is run, to do this jumper J2 on the high voltage module must be moved from Pins 2-3 to Pins 1-2 after the Brewer power is turned off (Ref - Appendix F). The instrument power must be turned back on to perform the HV test.  After the test is performed the brewer power must again be turned off and the jumper J2 on the high voltage module must be returned from Pins 1-2 back to Pins 2-3, and then the power restored for normal operation.  The HV command starts an automatic high voltage test and writes the results to HVJJJYY.III.\\
 ^Operating Position^HV Test Position^
 |{{:pictures:20231122_092953.jpg?400|Operating Position}}|{{:pictures:20231122_093001.jpg?400|HV Test Position}}|
@@ Line 13: / Line 24: @@
 See the [[hvset|HVSET]] command, and Appendix F for more details on the HV test.
- To run a manual high voltage test for multiboard (old electronics) use [[hvb|HVB]].
+==== High Voltage Test (MB²) ====
-=== Suggested Values ===
+  - Ensure the instrument is able to run diagnostic data (As it still required to measure the SL Bulb)
+  - Turn the instrument off
+  - Take the lid off the Brewer.
+  - Take the cover off the Secondary power supply
+  - Turn the brewer on
+  - Run the command "HVB" in dosbox
+  - Follow the dosbox prompt (See Suggested Values for more info)
+  - During the lamp warm up, set the multimeter to the voltage setting, and insert the leads to GND and HV on the panel beside the secondary power supply
+  - Once the lamp has warmed up and is waiting for the high voltage to be set, adjust the R202 pot until you are at the correct voltage - Refer to the table below for more info. Press the top left sighting button to when you have set the voltage.\\ {{:pictures:sps_pots.png?400|}}
+  - The Iris will move to the from the middle to the open position, then back to the middle, Once it is at the middle you may proceed to next voltage
+  - Repeat until you have completed the High voltage test
+Note: Prior to version 7.33, to run a high voltage test for multiboard electronics, you will need to use the [[hvb|HVB]] command instead.
+==== Suggested Values ====
 ^ ^Description^Suggested values^
 |Photomultiplier serial Number:|Enter the brewer serial number|IE: 046|
@@ Line 43: / Line 67: @@
 |1800|-9.00|
-==== Notes ====
+===== Notes =====
-SB¹ - Indicates Single board electronics
+SB¹ - Indicates Single board electronics\\
 MB² - Indicates Multi-board electronics