Monarch 1071-4833-121 Specifications, Introduction, Direct Digital Synthesis, Display Panel

9.0 SPECIFICATIONS

Adjustment Knob	Rotory knob with 32 detents per rev. Any value can be
all ranges and models	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	100.00 to 2999.95 FPM (Flashes per Minute)
Accuracy (setting)	3000.0 to 32500.0 FPS (Flashes per second)
EXTERNAL MODE	External flash rates to 0 are acceptable
Flash Range and Display	0.0833 to 541.67 ±0.01% Accuracy - FPS
Display only (no flash)	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 *	0 to 359 ± 0.1		100 to 3499.9 FPM
(and display)	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	0.0 - 180°	-see note
-Step Rate	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	10W
Instantaneous (per flash)	150 mJoule	Low Flash Rate
(auto change over)	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	500υ sec 5VDC typical
Input Pulse	20υ s min, TTL to 24VDC max
Sensor Power Supply	6VDC @ 50mA
Calibration	NIST traceable calibration certificate. (standard)
Note *	Minimum delay is 50υ sec in all delay modes

1.0 INTRODUCTION

The Phaser-Strobeis 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
PHASE	is active
	Indicates Phase Delay is
TIME	on the display
	Indicates Time Delay is on
FPS	the display
	Flashes Per Second (hertz)
FPM	is on the display
	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		Figure 1 Display Panel
	exceeds the limit	of
LO BAT	the stroboscope
	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.

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