---
name: "spotread"
section: "1"
platform: "linux"
package: "argyll"
version: "3.3.0+repack-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/spotread"
---

# spotread(1)

Read Print Spot values.

## NAME

Measure - Read Print Spot values.

## DESCRIPTION

Measure spot values, Version 1.6.3

## SYNOPSIS

**spotread** \[-options\] \[logfile\]

- **-v**

  Verbose mode

- **-s**

  Print spectrum for each reading

- **-S**

  Plot spectrum for each reading

- **-c** listno

  Set communication port from the following list (default 1)

-

  \*\* No ports found \*\*

- **-t**

  Use transmission measurement mode

- **-e**

  Use emissive measurement mode (absolute results)

- **-eb**

  Use display white brightness relative measurement mode

- **-ew**

  Use display white point relative chromatically adjusted mode

- **-p**

  Use telephoto measurement mode (absolute results)

- **-pb**

  Use projector white brightness relative measurement mode

- **-pw**

  Use projector white point relative chromatically adjusted mode

- **-a**

  Use ambient measurement mode (absolute results)

- **-f**

  Use ambient flash measurement mode (absolute results)

- **-I** illum

  Set simulated instrument illumination using FWA (def **-i** illum): M0, M1, M2, A, C, D50, D50M2, D65, F5, F8, F10 or file.sp\]

- **-i** illum

  Choose illuminant for computation of CIE XYZ from spectral data & FWA: A, C, D50 (def.), D50M2, D65, F5, F8, F10 or file.sp

- **-Q** observ

  Choose CIE Observer for spectral data or CCSS instrument: 1931\_2 (def), 1964\_10, S&B 1955\_2, shaw, J&V 1978\_2 (Choose FWA during operation)

- **-F** filter

  Set filter configuration (if aplicable):

- n

  None

- p

  Polarising filter

- 6

  D65

- u

  U.V. Cut

- **-E** extrafilterfile

  Apply extra filter compensation file

- **-x**

  Display Yxy instead of Lab

- **-h**

  Display LCh instead of Lab

- **-V**

  Show running average and std. devation from ref.

- **-T**

  Display correlated color temperatures and CRI

- **-N**

  Disable auto calibration of instrument

- **-H**

  Start in high resolution spectrum mode (if available)

- **-X** file.ccmx

  Apply Colorimeter Correction Matrix

- **-X** file.ccss

  Use Colorimeter Calibration Spectral Samples for calibration

- **-Y** r\|n

  Override refresh, non-refresh display mode

- **-Y** R:rate

  Override measured refresh rate with rate Hz

- **-Y** A

  Use non-adaptive integration time mode (if available).

- **-W** n\|h\|x

  Override serial port flow control: n = none, h = HW, x = Xon/Xoff

- **-D** \[level\]

  Print debug diagnostics to stderr

- logfile

  Optional file to save reading results as text