Difference between revisions of "Molectron"
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Information on Molectron / coherent laser power meters. Ultimately for the ezlaze project. I'm mostly interested in pyroelectric heads for pulsed power. | Information on Molectron / coherent laser power meters. Ultimately for the ezlaze project. I'm mostly interested in pyroelectric heads for pulsed power. | ||
+ | |||
=Ecosystem= | =Ecosystem= | ||
+ | {| class="wikitable" | ||
+ | |+Summary | ||
+ | !Family | ||
+ | !Connector | ||
+ | !Sensor | ||
+ | !Compatible | ||
+ | Meters | ||
+ | !Memory | ||
+ | ! | ||
+ | |- | ||
+ | |J | ||
+ | |DB25 | ||
+ | |Joule: | ||
+ | J8 | ||
+ | J25 | ||
+ | |||
+ | J50 | ||
+ | |||
+ | J100 | ||
+ | |||
+ | |||
+ | Power: | ||
+ | |||
+ | OP-2 | ||
+ | |||
+ | S10 | ||
+ | |3sigma | ||
+ | FieldMax-TOP | ||
+ | |||
+ | FieldMax-TO | ||
+ | |||
+ | FieldMate | ||
+ | |25LC320 | ||
+ | (SPI) | ||
+ | |Joule sensor: J25 is the most common followed by J50. J8 seems rare | ||
+ | |||
+ | Power sensor: OP-2 might be the most common. S10 seems rare | ||
+ | |||
+ | |||
+ | I've been calling these JSA due to "JSA-BNC", but that name might not be correct | ||
+ | |- | ||
+ | |LM | ||
+ | (LabMax) | ||
+ | |DB25 | ||
+ | |LM-2 | ||
+ | LM-10 | ||
+ | |||
+ | LM-30 | ||
+ | |||
+ | LM-45 | ||
+ | |||
+ | LM-100 | ||
+ | |4omega?<br /> | ||
+ | |24C04 | ||
+ | (I2C) | ||
+ | | | ||
+ | |- | ||
+ | |LM-P | ||
+ | |DB25 | ||
+ | |LM-P10 | ||
+ | | | ||
+ | | | ||
+ | |LM-P EEPROM looks slightly different than LM and in fact the LabMax-TOP user manual mentions these sensors are not compatible | ||
+ | |- | ||
+ | |PM | ||
+ | (PowerMax) | ||
+ | |DB25 | ||
+ | |PM10 | ||
+ | PM150 | ||
+ | |||
+ | PM-P (PowerMax-Pro) | ||
+ | |PM5200 | ||
+ | |93C46N | ||
+ | (SPI) | ||
+ | |Even if it was electrically compatible w/ JSA EEPROM format is completely different | ||
+ | |} | ||
Line 8: | Line 85: | ||
**Interface: DB25 | **Interface: DB25 | ||
**Also known as JSA? | **Also known as JSA? | ||
− | **3sigma, FieldMax-TOP, FieldMax-TO, FieldMate | + | **3sigma, FieldMax-TOP, FieldMax-TO, FieldMate |
**Intended to be used with J25, J50 power probes | **Intended to be used with J25, J50 power probes | ||
**I also have an S10 energy probe, seems to be compatible | **I also have an S10 energy probe, seems to be compatible | ||
Line 16: | Line 93: | ||
Warning: J25 and LM are not compatible. | Warning: J25 and LM are not compatible. | ||
+ | |||
+ | Other DB25 probes (none are known to be compatible): | ||
+ | |||
+ | *Ophir | ||
+ | *Laserpoint | ||
+ | *Gentec | ||
+ | *Newport | ||
+ | |||
+ | List of Molectron related power meters: | ||
+ | |||
+ | *3sigma | ||
+ | *4omega | ||
+ | *FieldMate | ||
+ | *FieldMax-TO | ||
+ | *FieldMax-TOP | ||
+ | *Fieldmaster | ||
+ | *LabMax-TOP | ||
+ | **Compatible with LM-, PM-, and PS- model thermopile sensors, and OP-2 and LM-2 model optical sensors. No adapters required. | ||
+ | **Measures energy to 10000 pps and captures every pulse to 1000 pps with J-model and EnergyMax sensors | ||
+ | **LabMax is not compatible with the legacy LM-P model energy sensors <br /> | ||
+ | |||
+ | PM official pinout for thermopile sensors | ||
+ | |||
+ | * COHERENT_LaserPowerSensors_FlowRequirements_FittingSpecs_PinAssignments_04-2017mp.pdf | ||
+ | * https://laserpointerforums.com/threads/help-with-lpm-wiring-db25-pinout-pm5200-to-attach-thermopile-sensor.107079/page-2 | ||
Lots of good info: | Lots of good info: | ||
− | * Energy Sensors Coherent J25.pdf | + | *Energy Sensors Coherent J25.pdf |
− | * 2009_LMCCatalog86.pdf | + | *2009_LMCCatalog86.pdf |
There was a conversion box you could buy at one point though (thermal-smartsensor-adapter-data-sheet.pdf), so it might just be different EPROM format | There was a conversion box you could buy at one point though (thermal-smartsensor-adapter-data-sheet.pdf), so it might just be different EPROM format | ||
− | * JSA-BNC Adapter | + | *JSA-BNC Adapter |
− | * 0012-2340: JSA-BNC Adapter for use with 3sigma, FieldMax-TOP, and FieldMax-P | + | *0012-2340: JSA-BNC Adapter for use with 3sigma, FieldMax-TOP, and FieldMax-P |
− | * 1056827: SmartSensor Adapter for use with 3sigma, FieldMax-TOP, FieldMax-TO,and FieldMate | + | *1056827: SmartSensor Adapter for use with 3sigma, FieldMax-TOP, FieldMax-TO,and FieldMate |
− | * Automatically configures itself to work with LM-model sensors | + | *Automatically configures itself to work with LM-model sensors |
<br /> | <br /> | ||
Line 47: | Line 149: | ||
3sigmaWinApps.zip | 3sigmaWinApps.zip | ||
+ | Battery | ||
+ | |||
+ | Ni-MH BATTERY | ||
+ | 7.2V 3.8 A-h | ||
+ | MOLECTRON | ||
+ | P/N 0012-0100 | ||
==JD1000== | ==JD1000== | ||
Line 52: | Line 160: | ||
Power supply: CS-1203000 (12V @ 3A, center positive) | Power supply: CS-1203000 (12V @ 3A, center positive) | ||
==McMaster== | ==McMaster== | ||
+ | |||
+ | |||
+ | ===J25LP-4 sensor=== | ||
+ | |||
+ | Came with 3 sigma in the trash | ||
+ | |||
+ | 3Sigma output: | ||
+ | Probe Resp: 1.827E+01 V/J @ 248 nm | ||
+ | Probe Cal Date Dec 8 2008 | ||
+ | |||
+ | Head label: | ||
+ | Responsivity | ||
+ | 1.828e+1 V/J | ||
+ | Cal: 248 nm | ||
+ | |||
+ | COHERENT | ||
+ | Model: J25LP-4 | ||
+ | |||
+ | COHERENT CALIBRATION TAG | ||
+ | DATE CALIB 12/08/08 | ||
+ | TECH KH | ||
+ | NEXT DUE 12/08/09 | ||
+ | |||
+ | Item #: 0010-8145 | ||
+ | Serial #: 0437E03 | ||
+ | |||
+ | Shell label: | ||
+ | COHERENT | ||
+ | PROBE SERIAL NO. 0437E03 | ||
+ | |||
===J25LP sensor=== | ===J25LP sensor=== | ||
Line 65: | Line 203: | ||
337.1 nm | 337.1 nm | ||
− | === | + | ===S10 sensor=== |
+ | |||
+ | From 3Sigmal (eBay) | ||
+ | |||
3Sigma output: | 3Sigma output: | ||
Probe Resp: 2.570E-1 A/W @ 514 nm | Probe Resp: 2.570E-1 A/W @ 514 nm | ||
Probe Cal Date Sep 10 2003 | Probe Cal Date Sep 10 2003 | ||
− | |||
− | |||
− | |||
DB25 label: | DB25 label: | ||
− | + | Molectron | |
+ | MODEL NO.: S10 | ||
+ | SERIAL NO. 0338H03 | ||
+ | |||
+ | DB25 label: | ||
+ | Molectron | ||
+ | SER NO 0338H03 | ||
+ | CAL DATE 9/18/03 | ||
+ | CAL DUE 9/18/04 | ||
+ | TECH B DUNLAP | ||
+ | 0011-6322 | ||
+ | TRACETABLE TO NIST | ||
+ | |||
+ | Cable label: 0012-2530 | ||
− | Sensor | + | |
− | + | ||
+ | 25LC320 | ||
+ | |||
+ | *32K SPI Bus Serial EEPROM | ||
+ | |||
+ | {| class="wikitable" | ||
+ | |+ | ||
+ | !Pin | ||
+ | !Function | ||
+ | !Notes | ||
+ | |- | ||
+ | |1 | ||
+ | | | ||
+ | |Silkscreen: Th | ||
+ | |- | ||
+ | |2 | ||
+ | | | ||
+ | |Silkscreen: Py | ||
+ | |- | ||
+ | |3 | ||
+ | |Sensor + | ||
+ | |Silkscreen: SG | ||
+ | |- | ||
+ | |4 | ||
+ | | | ||
+ | |Silkscreen: S1 | ||
+ | |||
+ | |||
+ | 4, 6, 14,16 shorted | ||
+ | |||
+ | W3 to W4 jumper | ||
+ | |- | ||
+ | |5 | ||
+ | |EEPROM CSn | ||
+ | |Pullup resistor to VCC | ||
+ | |- | ||
+ | |6 | ||
+ | | | ||
+ | |4, 6, 14,16 shorted | ||
+ | |- | ||
+ | |7 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |8 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |9 | ||
+ | |Jumper | ||
+ | |N/C | ||
+ | |- | ||
+ | |10 | ||
+ | |Jumper | ||
+ | |10-12 shorted | ||
+ | |- | ||
+ | |11 | ||
+ | |Jumper | ||
+ | |10-12 shorted | ||
+ | |- | ||
+ | |12 | ||
+ | |Jumper | ||
+ | |10-12 shorted | ||
+ | |- | ||
+ | |13 | ||
+ | |EEPROM VSS | ||
+ | | | ||
+ | |- | ||
+ | |14 | ||
+ | | | ||
+ | |4, 6, 14,16 shorted | ||
+ | |- | ||
+ | |15 | ||
+ | |Sensor - | ||
+ | | | ||
+ | |- | ||
+ | |16 | ||
+ | | | ||
+ | |4, 6, 14,16 shorted | ||
+ | |- | ||
+ | |17 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |18 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |19 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |20 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |21 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |22 | ||
+ | |EEPROM SCK | ||
+ | | | ||
+ | |- | ||
+ | |23 | ||
+ | |EEPROM SI | ||
+ | | | ||
+ | |- | ||
+ | |24 | ||
+ | |EEPROM SO | ||
+ | | | ||
+ | |- | ||
+ | |25 | ||
+ | |EEPROM VCC | ||
+ | |2.5-5.5V | ||
+ | |} | ||
+ | |||
+ | {| class="wikitable" | ||
+ | |+ | ||
+ | EEPROM wiring for read out | ||
+ | !EEPROM pin | ||
+ | !Function | ||
+ | !DB25 pin | ||
+ | !Note | ||
+ | |- | ||
+ | |1 | ||
+ | |CSn | ||
+ | |5 | ||
+ | | | ||
+ | |- | ||
+ | |2 | ||
+ | |SO | ||
+ | |24 | ||
+ | | | ||
+ | |- | ||
+ | |3 | ||
+ | |WPn | ||
+ | |25 | ||
+ | |VCC | ||
+ | |- | ||
+ | |4 | ||
+ | |VSS | ||
+ | |13 | ||
+ | | | ||
+ | |- | ||
+ | |5 | ||
+ | |SI | ||
+ | |23 | ||
+ | | | ||
+ | |- | ||
+ | |6 | ||
+ | |SCK | ||
+ | |22 | ||
+ | | | ||
+ | |- | ||
+ | |7 | ||
+ | |HOLDn | ||
+ | |25 | ||
+ | |VCC | ||
+ | |- | ||
+ | |8 | ||
+ | |VCC | ||
+ | |25 | ||
+ | | | ||
+ | |} | ||
===J-25MB-HE sensor=== | ===J-25MB-HE sensor=== | ||
− | |||
− | |||
− | |||
Cable label: | Cable label: | ||
Line 92: | Line 404: | ||
Responsitivity | Responsitivity | ||
− | 6.694e + 0 V/J | + | 6.694e+0 V/J |
Cal 1064 nm | Cal 1064 nm | ||
Line 100: | Line 412: | ||
Relatively cheap impulse buy to compare EEPROM formats | Relatively cheap impulse buy to compare EEPROM formats | ||
+ | |||
+ | Significantly more complicated inside. Instead of being a simple BNC out there is a whole bundle of cases. Think this is "heated" version maybe though and there might be a dumber version | ||
+ | |||
+ | |||
+ | Atmel 24C04 | ||
+ | |||
+ | *4KB I2C | ||
+ | *PDIP8 | ||
+ | *I was going to make an adapter and figure out pinout, but I decided to just clip on instead | ||
+ | |||
+ | {| class="wikitable" | ||
+ | |+ | ||
+ | !Pin | ||
+ | !Function | ||
+ | !Notes | ||
+ | |- | ||
+ | |1 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |2 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |3 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |4 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |5 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |6 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |7 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |8 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |9 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |10 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |11 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |12 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |13 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |14 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |15 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |16 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |17 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |18 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |19 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |20 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |21 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |22 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |23 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |24 | ||
+ | | | ||
+ | | | ||
+ | |- | ||
+ | |25 | ||
+ | | | ||
+ | | | ||
+ | |} | ||
+ | |||
===3Sigma (eBay) meter=== | ===3Sigma (eBay) meter=== | ||
Line 116: | Line 545: | ||
Capacitor exploded when plugged in (presumably due to age). Didn't work after, although some lights turned on. Scrapped | Capacitor exploded when plugged in (presumably due to age). Didn't work after, although some lights turned on. Scrapped | ||
+ | |||
+ | ==Newport 835== | ||
+ | Newport project: http://hololaser.kwaoo.me/electronics/Newport835.html | ||
+ | |||
+ | I just happen to also have a few Newport 835s. Unfortunately my inventory is: | ||
+ | |||
+ | *Newport 835, S/N 1477: calibrated for 818-SL, S/N 3190 | ||
+ | *Newport 835, S/N 1502: calibrated for 818-SL, S/N 3165 | ||
+ | *Newport 818-SL, S/N 3191 | ||
+ | |||
+ | ...which is close but doesn't entirely match. Dumped the EPROM / calibration data though in case I want to play with it in the future | ||
+ | |||
+ | ==Liconix 45PM== | ||
+ | My oldest laser power meter. Meter + head both have S/N 9110014. | ||
+ | |||
+ | Completely analog / calibrated via pots. | ||
+ | |||
+ | ==More info== | ||
+ | Source code: https://github.com/JohnDMcMaster/molectron | ||
+ | |||
+ | <br /> |
Latest revision as of 05:11, 12 November 2021
Information on Molectron / coherent laser power meters. Ultimately for the ezlaze project. I'm mostly interested in pyroelectric heads for pulsed power.
Contents
Ecosystem
Family | Connector | Sensor | Compatible
Meters |
Memory | |
---|---|---|---|---|---|
J | DB25 | Joule:
J8 J25 J50 J100
OP-2 S10 |
3sigma
FieldMax-TOP FieldMax-TO FieldMate |
25LC320
(SPI) |
Joule sensor: J25 is the most common followed by J50. J8 seems rare
Power sensor: OP-2 might be the most common. S10 seems rare
|
LM
(LabMax) |
DB25 | LM-2
LM-10 LM-30 LM-45 LM-100 |
4omega? |
24C04
(I2C) |
|
LM-P | DB25 | LM-P10 | LM-P EEPROM looks slightly different than LM and in fact the LabMax-TOP user manual mentions these sensors are not compatible | ||
PM
(PowerMax) |
DB25 | PM10
PM150 PM-P (PowerMax-Pro) |
PM5200 | 93C46N
(SPI) |
Even if it was electrically compatible w/ JSA EEPROM format is completely different |
Ecosystems:
- J DB-25 smart probes
- Interface: DB25
- Also known as JSA?
- 3sigma, FieldMax-TOP, FieldMax-TO, FieldMate
- Intended to be used with J25, J50 power probes
- I also have an S10 energy probe, seems to be compatible
- LM DB-25 smart probes
- Interface: DB25
- Intended to be used with LM probes
Warning: J25 and LM are not compatible.
Other DB25 probes (none are known to be compatible):
- Ophir
- Laserpoint
- Gentec
- Newport
List of Molectron related power meters:
- 3sigma
- 4omega
- FieldMate
- FieldMax-TO
- FieldMax-TOP
- Fieldmaster
- LabMax-TOP
- Compatible with LM-, PM-, and PS- model thermopile sensors, and OP-2 and LM-2 model optical sensors. No adapters required.
- Measures energy to 10000 pps and captures every pulse to 1000 pps with J-model and EnergyMax sensors
- LabMax is not compatible with the legacy LM-P model energy sensors
PM official pinout for thermopile sensors
- COHERENT_LaserPowerSensors_FlowRequirements_FittingSpecs_PinAssignments_04-2017mp.pdf
- https://laserpointerforums.com/threads/help-with-lpm-wiring-db25-pinout-pm5200-to-attach-thermopile-sensor.107079/page-2
Lots of good info:
- Energy Sensors Coherent J25.pdf
- 2009_LMCCatalog86.pdf
There was a conversion box you could buy at one point though (thermal-smartsensor-adapter-data-sheet.pdf), so it might just be different EPROM format
- JSA-BNC Adapter
- 0012-2340: JSA-BNC Adapter for use with 3sigma, FieldMax-TOP, and FieldMax-P
- 1056827: SmartSensor Adapter for use with 3sigma, FieldMax-TOP, FieldMax-TO,and FieldMate
- Automatically configures itself to work with LM-model sensors
J25
TODO: figure out pinout, EEPROM format so I can recal and upgrade adapters
LM
3Sigma
File archive:
3sigmaAppQuickRef.pdf 3sigmaLVDriverUG.pdf 3sigma_LV_Driver.zip 3sigma Users Manual.pdf 3sigmaWinApps.zip
Battery
Ni-MH BATTERY 7.2V 3.8 A-h MOLECTRON P/N 0012-0100
JD1000
Power supply: CS-1203000 (12V @ 3A, center positive)
McMaster
J25LP-4 sensor
Came with 3 sigma in the trash
3Sigma output:
Probe Resp: 1.827E+01 V/J @ 248 nm Probe Cal Date Dec 8 2008
Head label:
Responsivity 1.828e+1 V/J Cal: 248 nm
COHERENT Model: J25LP-4
COHERENT CALIBRATION TAG DATE CALIB 12/08/08 TECH KH NEXT DUE 12/08/09
Item #: 0010-8145 Serial #: 0437E03
Shell label:
COHERENT PROBE SERIAL NO. 0437E03
J25LP sensor
Came with JD1000. BNC output but no 25 pin adapter
Back:
MODEL NO: J25LP SERIAL NO: 238 RESPONSITIVITY 5.10 VOLT/JOULE 337.1 nm
S10 sensor
From 3Sigmal (eBay)
3Sigma output:
Probe Resp: 2.570E-1 A/W @ 514 nm Probe Cal Date Sep 10 2003
DB25 label:
Molectron MODEL NO.: S10 SERIAL NO. 0338H03
DB25 label:
Molectron SER NO 0338H03 CAL DATE 9/18/03 CAL DUE 9/18/04 TECH B DUNLAP 0011-6322 TRACETABLE TO NIST
Cable label: 0012-2530
25LC320
- 32K SPI Bus Serial EEPROM
Pin | Function | Notes |
---|---|---|
1 | Silkscreen: Th | |
2 | Silkscreen: Py | |
3 | Sensor + | Silkscreen: SG |
4 | Silkscreen: S1
W3 to W4 jumper | |
5 | EEPROM CSn | Pullup resistor to VCC |
6 | 4, 6, 14,16 shorted | |
7 | ||
8 | ||
9 | Jumper | N/C |
10 | Jumper | 10-12 shorted |
11 | Jumper | 10-12 shorted |
12 | Jumper | 10-12 shorted |
13 | EEPROM VSS | |
14 | 4, 6, 14,16 shorted | |
15 | Sensor - | |
16 | 4, 6, 14,16 shorted | |
17 | ||
18 | ||
19 | ||
20 | ||
21 | ||
22 | EEPROM SCK | |
23 | EEPROM SI | |
24 | EEPROM SO | |
25 | EEPROM VCC | 2.5-5.5V |
EEPROM pin | Function | DB25 pin | Note |
---|---|---|---|
1 | CSn | 5 | |
2 | SO | 24 | |
3 | WPn | 25 | VCC |
4 | VSS | 13 | |
5 | SI | 23 | |
6 | SCK | 22 | |
7 | HOLDn | 25 | VCC |
8 | VCC | 25 |
J-25MB-HE sensor
Cable label:
COHERENT Item# 1110748 Model: J-25MB-HE Serial#: 0984E07R
Responsitivity 6.694e+0 V/J Cal 1064 nm
LM-10
LM-10 HTD 250-10600nm 10mW-10w 500mJ/cm2 10ns @ 1064n Laser
Relatively cheap impulse buy to compare EEPROM formats
Significantly more complicated inside. Instead of being a simple BNC out there is a whole bundle of cases. Think this is "heated" version maybe though and there might be a dumber version
Atmel 24C04
- 4KB I2C
- PDIP8
- I was going to make an adapter and figure out pinout, but I decided to just clip on instead
Pin | Function | Notes |
---|---|---|
1 | ||
2 | ||
3 | ||
4 | ||
5 | ||
6 | ||
7 | ||
8 | ||
9 | ||
10 | ||
11 | ||
12 | ||
13 | ||
14 | ||
15 | ||
16 | ||
17 | ||
18 | ||
19 | ||
20 | ||
21 | ||
22 | ||
23 | ||
24 | ||
25 |
3Sigma (eBay) meter
Came with CW sensor
3Sigma (dumpster dive) meter
Came w/ sensor + BNC adapter
Screen is messed up
Came with Lemo cable. Doesn't fit trigger ports or anything I can tell
JD1000 meter
Capacitor exploded when plugged in (presumably due to age). Didn't work after, although some lights turned on. Scrapped
Newport 835
Newport project: http://hololaser.kwaoo.me/electronics/Newport835.html
I just happen to also have a few Newport 835s. Unfortunately my inventory is:
- Newport 835, S/N 1477: calibrated for 818-SL, S/N 3190
- Newport 835, S/N 1502: calibrated for 818-SL, S/N 3165
- Newport 818-SL, S/N 3191
...which is close but doesn't entirely match. Dumped the EPROM / calibration data though in case I want to play with it in the future
Liconix 45PM
My oldest laser power meter. Meter + head both have S/N 9110014.
Completely analog / calibrated via pots.
More info
Source code: https://github.com/JohnDMcMaster/molectron