Monarch Instrument Nova Strobe DB Plus - Manual (Page 5)

selected. The ALT chevron toggles whenever the Alt function button is pressed, and when this
chevron is on, the buttons will perform their alternate function listed in the white (lower)
section of each button. The FPS/HZ chevron is on when the display is displaying Flashes Per
Second or Hertz (Hz). The FPM/RPM chevron is on when the display is displaying Flashes
Per Minute.
Other icons in the display include the following:
! Remote Sensor On Target Indicator
- - - - - Indicates input frequency exceeds the limit of the stroboscope
LO BAT (Battery Powered Model Only) Flashes on display when the battery
is getting low. It is on steady when strobe must be recharged.
Below the display are six membrane buttons which control the operation of the Stroboscope.
The operation of these buttons is explained within section 3.0 Operaton.
2.0 PREPARATION FOR USE
The Strobe may be hand held or mounted on a tripod or other user supplied bracket using the
¼-20 UNC bushing at the base of the handle.
2.1 Power
The AC powered strobe must have its power cord plugged into an AC outlet (115VAC or
230VAC).
The battery powered strobe has internal rechargeable batteries. The unit should be charged
before use (see section 6.2). This model can operate continuously in excess of 55 minutes at
6000 flashes per minute from fully charged batteries. The strobe has a protection feature that
prevents the strobe from operating if the battery voltage is low. This condition is indicated by
no flash and the display shows “LO BAT”. At this time the batteries must be recharged. The
actual operating time of the stroboscope depends on the flash rate and duty cycle of operation.
Slower flash rates increase the operating time.
2.2 Input / Output Connections
The strobe has input and output jacks on the left side of the stroboscope
(see Figure 2). These can be used for external triggering or
synchronization (daisy chaining two or more strobes). These jacks accept
1/8" (3.5mm) phone plugs (input - stereo, output - mono). The jacks’
outer connection (barrel) is common and the inner or center connection
is the signal. The input jack also has a middle connection which provides
power to an input sensor. The input and output are TTL compatible.
The input jack (" pointing
into socket) enables an
external signal to trigger the
strobe. Inserting a plug into
the input jack will put the
strobe into the External
mode. The range for
triggering is from 0 flashes
per second to 233 flashes
2
! ! ! ! ! ! ! ! ! !
Out In
# # # # # " " " " "
Figure 2 Input/
Output Jacks
Signal Input
+6V Out to
Sensor
Common
(GND)
Common
(GND)
+6V Out to
Sensor
Signal Input
Figure 3 Input Connector Connection Detail
7.0 SPECIFICATIONS
9
Internal Mode
Flash Rate Resolution (Setting)
Flash Rate Accuracy (Setting)
Update Rate
30.0 - 14,000.0 FPM (Flashes per Minute)
0.5 - 233.33 FPS (Flahes per Second)
±0.1 FPM
The greater of ±0.5 FPM or ±0.01% of reading
Instantaneous
External Mode
Flash Range and Display
Update Rate
Tachometer Measurements
5.0 to 14,000.0 FPM
0.08 to 233.33 FPS
External flash rates to 0 are acceptable
1 Second Typical
5.0 to 99999.9 FPM ±0.1 FPM Resolution
100,000 to 200,000 FPM ±1 FPM Resolution
±0.01% of reading Accuracy
Time Base Ultra stable Crystal Oscillator
Light Power
Average
Instantaneous (per flash)
(Battery Powered) 10W
(AC Powered) 15W
220mJoule
Flash Duration 10 - 30 microseconds typical
Memory 6 preset user programmable Flash Rates.
100, 500, 1000, 3600, 7200, 14000 FPM
Last settings befor power down remembered and
restored on next power up.
Knob Adjusment - all ranges and modes Rotary Switch with 36 detents per rev.
Display 6 digit alphanumeric backlit LCD display.
Low Battery Indication (Battery powered only).
Individual chevrons for mode display.
Input Power (Battery powered) Internal Rechargable Batteries
6VDC. External AC fast recharger.
(AC powered) 115VAC or 230VAC
Input Pulse
Trigger to Flash Delay
20 µsec min positive pulse, TTL to 24VDC max
< 5 µsec
Output Pulse 100 µsec positive pulse, 5VDC typical
Remote Sensor Power Supply 5VDC @50mA
Weight (Battery powered) 2½ lbs (1.2 kg) including
batteries
(AC powered) 1½ lbs (0.68 kg)