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Measurement Preparation
SELECT : SYNC.
INT 60.0Hz
<Changing the Synchronizing Frequency for INT>
Select INT as explained above, and enter the desired frequency using the number-key.
<Relationship between Measurement Speed and SYNC Mode>
The measurement time (sampling time) is determined by the selected SYNC mode.
The measurement speed (the number of measurements and outputs per second) is determined by the SYNC mode
and the following conditions.
• Luminance of the display to be measured
• Measurement mode
• Data output (RS-232C or USB)
• In cace RS-232C, Baud rate
• Number of measuring probes to be used (when the optional 4-Probe Expansion Board is used)
The table below shows the measurement speed for each SYNC mode when measurement is performed under the
following conditions.
RS232C
• Luminance of the display to be measured .... No errors and warnings, and the luminance is stable.
• Display mode................................................ xyLv or Flicker**
• Baud rate....................................................... 38,400 bps
• Number of connected measuring probes......... 1
xyLv Flicker
FAST SLOW —
NTSC 17 measurements/sec. 4.5 measurements/sec.*
1
16 measurements/sec.
PAL 15 measurements/sec. 4 measurements/sec. 14 measurements/sec.
EXT*
2
17 measurements/sec. 4.5 measurements/sec. 16 measurements/sec.
UNIV. 7 measurements/sec. 1.5 measurements/sec. —
INT*
2
17 measurements/sec. 4.5 measurements/sec. 16 measurements/sec.
*1 Applies when luminance Lv is 0.1 cd/m
2
or higher for Measuring ø27 probe (CA-PU32/35, CA-P32/35), or 0.3 cd/m
2
or higher
for Measuring ø10 probe (CA-PSU32/35, CA-PS32/35).
If Lv is lower than mentioned above, 3.5 measurements/sec. spplies.
*2 The measurement speed for EXT and INT when the vertical scanning frequency is 60 Hz is given.
USB
• Luminance of the display to be measured .... No errors and warnings, and the luminance is stable.
• Display mode................................................ xyLv or Flicker**
• Number of connected measuring probes......... 1
xyLv Flicker
FAST SLOW —
NTSC 20 measurements/sec. 5 measurements/sec.*
1
16 measurements/sec.
PAL 17 measurements/sec. 4 measurements/sec. 14 measurements/sec.
EXT*
2
20 measurements/sec. 5 measurements/sec. 16 measurements/sec.
UNIV. 8 measurements/sec. 1.5 measurements/sec. —
INT*
2
20 measurements/sec. 5 measurements/sec. 16 measurements/sec.
*1 Applies when luminance Lv is 0.1 cd/m
2
or higher for Measuring ø27 probe (CA-PU32/35, CA-P32/35), or 0.3 cd/m
2
or higher
for Measuring ø10 probe (CA-PSU32/35, CA-PS32/35).
If Lv is lower than mentioned above, 4 measurements/sec. spplies.
*2 The measurement speed for EXT and INT when the vertical scanning frequency is 60 Hz is given.
4. Press the key to confirm the selection.
*To use EXT mode, the vertical synchronizing signal used for the display must be input to the instrument. (Page 28)
* By default (factory setting), the instrument is set so that EXT mode will be selected automatically when the POWER switch is set to ON.
If you want to change this setting, refer to page 29.
**Flicker Mode is a function which can be used only when LED Flicker Measuring ø27 Probe(CA-P32/35) or LED Flicker Measuring ø10
Probe(CA-PS32/35) is connected.