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Figure 1 Display Panel
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1.0 INTRODUCTION
The Phaser-Strobe is an extremely sophisticated instrument with many features never before available
in a stroboscope, yet remains simple to operate. Select only the features you need. Its internal
microprocessor with “Direct Digital Synthesis” enables precise settings and measurement which
are unique to the Phaser-Strobe, providing the widest flash range of any stroboscope.
The unit can store and recall three full, user programmed settings in non-volatile memory, as well as
last used settings so that the unit “remembers” all the settings when the power is turned off.
The Auto Step mode enables the user to view high speed moving parts in slow motion, with both the
rate and step size user programmable.
1.1 Direct Digital Synthesis
“Direct Digital Synthesis” is the method by which the Phaser-Strobe’s internal microprocessor
generates all the signals required to set internal flash rates, time delays and phase shifts. In
analog stroboscopes, these values are adjusted using a single or multiple turn potentiometer
(knob), which generally lack sensitivity and tend to drift with time. It is very difficult to set
absolute values on analog stroboscopes. The Phaser-Strobe, however, synthesizes all signals
digitally, in small, very precise steps, all derived from a stable crystal oscillator. In the internal
flash mode, these steps are as small as 0.05 flashes per minute. Thus absolute values may be
dialed in very easily and accurately. See section 3.1 Using the Knob for more details.
1.2 Display Panel
The display panel consists of a backlit display with six alphanumeric digits that indicate modes,
flash rates, delays, etc. (see Figure 1). Below the six digits are five small chevrons (!) which
indicate the present mode of value displayed, and are described below:
AUTO Indicates Auto mode
is active
PHASE Indicates Phase Delay is
on the display
TIME Indicates Time Delay is on
the display
FPS Flashes Per Second (hertz)
is on the display
FPM Flashes Per Minute is on
the display
Other icons in the display include the following:
! On Target Indicator -
Blinks at input frequency
- - - - - Indicates input frequency
exceeds the limit of
the stroboscope
LO BAT Flashes on display when the battery is getting low. It is on steady when the
strobe must be recharged.
Below the display are six membrane buttons that control the operation of the Stroboscope.
The operation of these buttons is explained within section 3.0 Operation. The red LEDs in the
top left corner of the DELAY and EXT buttons and the chevrons above AUTO, PHASE and
TIME indicate the operating mode.
Adjustment Knob
all ranges and models
Rotory knob with 32 detents per rev. Any value can be
changed in decade steps (powers of 10) from 0.0001 per
detent to 10,000 per detent (depends on mode selected).
Time Base
Ultra stable Crystal Oscillator Controlled
INTERNAL MODE
Flash Range 30.0 - 32,500.0 FPM (Flashes per Minute)
0.5 - 541.67 FPS (Flashes per Second)
Update Rate Instantaneous
Flash Rate Resolution and
Accuracy (setting)
100.00 to 2999.95 FPM (Flashes per Minute)
3000.0 to 32500.0 FPS (Flashes per second)
EXTERNAL MODE
Flash Range and Display
Display only (no flash)
External flash rates to 0 are acceptable
0.0833 to 541.67 ±0.01% Accuracy - FPS
5.0000 to 9,999.9 ±0.01% Accuracy - FPM
10,000 to 32,500 ±0.01% Accuracy - FPM
33,000 to 200,000 ±0.01% Accuracy - FPM
550.00 to 3,333.3 ±0.01% Accuracy - FPS
Update Rate 0.5 Seconds typical
Delay - Degrees *
(and display)
0 to 359 ± 0.1 100 to 3499.9 FPM
0 to 355 ± 0.1 3500 to 9999.9 FPM
0 to 350 ± 0.1 10000 to 32000 FPM
Delay - Time * 0 to 6500 milliseconds ± 0.0001 seconds
Auto Step Mode
-Step Size
-Step Rate
0.0 - 180° -see note
0.0001 to 6.5 seconds per step
Memory
Store three full settings in non-volatile memory.
Last settings before power down remembered and
restored on next power up.
Display
6-digit alphanumeric display shows information in English.
Battery charge and low battery indication.
Individual chevrons for mode display.
Light Power - Average
Instantaneous (per flash)
(auto change over)
10W
150 mJoule Low Flash Rate
50 mJoule High Flash Rate
Flash Duration 10 - 30 microseconds typical
Input Power Internal Rechargable Batteries. External 7VDC 18W
Weight 2 1/2 lbs (1.2 kg) including batteries
Options Line Powered Supply / Charger
Interface Cables, Remote Optical Sensor.
Output Pulse 500υsec 5VDC typical
Input Pulse 20υs min, TTL to 24VDC max
Sensor Power Supply 6VDC @ 50mA
Calibration NIST traceable calibration certificate. (standard)
Note *
Minimum delay is 50
υ
sec in all delay modes
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9.0 SPECIFICATIONS