
Specifications:
Installation Instructions:
1. Mount unit in desired location.
2. Set power switch on power distribution board marked [PD] to OFF position for models ALTV248UL or
ALTV248ULCB (Figs. 1, 2, pg. 5).Set power disconnect circuit breaker to OFF position for all
other models (Figs. 3A-10A, pgs. 6-10).
3. All units are factory set for 24VAC operation.
For 28VAC operation adjust unit prior to mounting and applying power as follows:
Change the wire position so that the wire marked [28V] is connected to the terminal marked [P] and
the wire marked [24V] is connected to the terminal marked [S].
Note:ALTV248ULCB set for 28VAC operation is not Class 2 Rated, not power limited.
4. Connect AC power to the black and white flying leads of the transformer(s) (Figs. 1-10, pgs. 5-10),
secure green lead to earth ground. Use 18 AWG or larger for all power connections.
Keep power limited (PTC protected outputs only) wiring separate from non-power limited wiring.
Minimum .25” spacing must be provided. Use separate knockouts.
5. Set power switch on power distribution board marked [PD] to ON position for models ALTV248UL or
ALTV248ULCB (Figs. 1, 2, pg. 5).Set power disconnect circuit breaker to RESET (ON) position for
all other models (Figs. 3A-10A, pgs. 6-10).
6. Measure output voltage before connecting devices. This helps avoid potential damage.
Terminals marked [1P - 8P] are of the same polarity.
CAUTION: Determine the maximum operating voltage of the equipment being powered before adjusting
the output voltage.
7. Set power switch on power distribution board marked [PD] to OFF position for models ALTV248UL or
ALTV248ULCB (Figs. 1, 2, pg. 5).Set power disconnect circuit breaker to OFF position for all
other models (Figs. 3A-10A, pgs. 6-10).
8. Connect devices to terminals marked [1P - 1N through 4P - 4N] on PD4/PD4CB board (Figs. 9, 10, pgs. 9, 10)
or terminals marked [1P - 1N through 8P - 8N] on PD8/PD8CB board (Figs. 1-8, pgs. 5-8), carefully
observing polarity.
9. Set power switch on power distribution board marked [PD] to ON position for models ALTV248UL or
ALTV248ULCB (Figs. 1, 2, pg. 5).Set power disconnect circuit breaker to RESET (ON) position for
all other models (Figs. 3A-10A, pgs. 6-10)
10.Green LED will illuminate when power is present.
11.Upon completion of wiring, secure enclosure door with screws (supplied). Installation of cam lock is optional.
Caution: Equipment to be installed/serviced by authorized/trained personnel only.
Shut branch circuit power before installing/servicing equipment.
WARNING:To reduce the risk of fire or electric shock, do not expose the unit to rain or moisture.
This installation should be made by qualified service personnel and should conform to all local codes
and in accordance with the National Electrical Code. Use 75º C or higher rated UL insulated wiring for
connecting the unit to the mains. Replace fuses with the same type and rating (refer to Eight (8) Output
ALTV248UL Reference Chart, pg. 2)
-3-
•UL Listed for Commercial CCTV Equipment (UL 2044).
CUL Listed - CSA Standard C22.2 No.1-98, Audio,
Video and Similar Equipment.
• Surge suppression.
• AC power LED indicator.
• Power ON/OFF switch (ALTV248UL, ALTV248ULCB).
• Illuminated power disconnect circuit breaker
with manual reset (all other models).
• Unit maintains camera synchronization.
• Ease of installation saves time & eliminates costly labor.
• Spare fuses included (on fuse protected models).
Enclosure Dimensions:
ALTV248UL, ALTV248ULCB, ALTV248300ULM,
and ALTV248300ULCBM:
8.5"H x 7.5"W x 3.5"D
ALTV248175UL, ALTV248175ULCB,
ALTV248300UL and ALTV248300ULCB:
12"H x 7.75"W x 4.5"D
ALTV248600UL and ALTV248600ULCB:
13"H x 13.5"W x 3.5"D