DENNARD TYPE 880 & 883 INFRA RED ILLUMINATOR INSTRUCTION
SHEET
Installation Notes:
(1) When the I.R. Illuminator is powered from a Dennard 12 Volt electronic transformer, it must be
connected direct to the Illuminator flying lead. Do not extend the lead as the line voltage drop
will reduce the light output.
(2) To replace a bulb:-
a. Remove the two M4 pan head screws located towards the rear of the cylindrical body and pull
the body free
b. The old bulb has a two pin push in fitting and is simply pulled out and discarded.
c. When fitting the replacement bulb, care should be taken not to touch the filament glass
envelope or the concave part of the reflector, as finger marks will reduce lamp life.
d. Use genuine Dennard replacement bulbs which have been specially modified for use in I.R.
illuminators.
(3) Setting up the Illuminator for correct alignment is easily achieved by loosening the two rear hex.
head trunnion fixings and the single cradle mount fixing, adjusting to the desired pointing angle
and re-tightening.
Specification:
Illuminator
Beam Angle 12V-20WF38
Bulb
Weight
I.R. Filter
Transmission
This table shows the lux (white light) values at given distances. The camera will only receive 10% of the scene illumination
Distance
1 Metre
2 Metre
4 Metre
8 Metre
16 Metre
32 Metre
64 Metre
DENNARD
Type 880N20 Type 880M20 Type 880N50 Type 880M50 Type 883N75 Type 883M75
spot
24 Degrees 36 Degrees 24 Degrees 36 Degrees 24 Degrees 36 Degrees
350g 350g 350g 350g 350g 350g
Type 880 or 883 microlight
Type 880N20
1200 600 3600 2000 4800 2700
300 150 900 500 1200 675
75 37.5 225 125 300 169
18.8 9.4 56.3 31.3 75 42.2
4.7 2.3 14 7.8 18.8 10.5
1.2 0.6 3.5 1.9 4.7 2.6
1.2 0.7
12V-20WF35
medium flood
Dichroic toughened glass 3mm thick 715nm or 830nm
Brown
Blue
Type 880M20 Type 880N50 Type 880M50 Type 883N75 Type 883M75
12V-50WF33
T.B.
White
White
12V-50WF34
spot
Better than 90%
12V a.c. 230V a.c.
50 Hz
Output Input
medium flood
Electronic
Transformer
12V-75WF51
Brown
Blue
spot
T.B.
12V-75WF50
medium flood
200-250V a.c.
50 Hz
Supply Input
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DENNARD LTD
55, Fleet Road, Fleet, Hampshire GU13 8PN England Tel: + 44 (0) 1252 614884 Fax : + 44 (0) 1252 626013
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