Page 2
Selecting a Mounting Location . . .
The logical choice for a mounting area would be a trunk or similar compartment.
However, due to the wide variety of vehicles onto which the ISP148 can be installed,
this is not always possible. The following guidelines will help the installer select an
acceptable alternative:
A) The unit should be mounted on a metal surface to aid heat dissipation. Be sure
that this surface is not one that either generates or is exposed to excessive
heat during normal operation of the vehicle.
B) Do not select a location where the power supply will be exposed to potential
damage from any unsecured or loose equipment in the vehicle.
C) Be sure the area selected will not allow the ISP148 to be exposed to water!
D) When routing the wires, it is important to choose a path that will keep these
wires away from excessive heat and from any vehicle equipment that could
compromise the integrity of the wires (ex. trunk lids, door jams, etc.).
E) Be sure your mounting location does not block the cooling fan in the rear of the
unit. (See last page)
WARNING: All customer supplied wires, that connect to the positive (+)
terminal of the battery, must be sized to supply at least 125% of the maximum
operating current, and fused “at the battery” to carry the load!
WARNING: When extending the communication wires (BLUE & GREY), use
either the Whelen 25ft cable (P/N 46-9641638250) or similar “twisted pair”
wires!
CAUTION: As it will be necessary to drill holes into the mounting surface, the
installer MUST be sure that no vehicle components or other vital parts could be
damaged by the drilling process. Check both sides of the mounting surface
before drilling begins!
Operating Instructions . . .
The ISP148 has been designed to emulate the operations of four existing Whelen
power supplies:
The UPS-188C (Alternating Pairs) - ALT 2X2X4
The DOT-188C (Simultaneous Pairs) - SIMUL. 2X2X4
The DOT-188MN (Simultaneous) - SIMUL. 2X2X4
The BL188C - B-LINK
Selecting the desired operational mode is accomplished by configuring dip switches
#1, #2 #3 & #8, located on the front panel of the power supply. The use of Dip
Switches #4 & #5 is explained in the “Hi-Lo Power” section. The following section will
explain how to place the ISP148 into each of these respective modes, as well as
outline the operational procedures for each mode.
Section 1: Emulation Modes . . .
Applying +12VDC to the control wires indicated in each mode (using customer
supplied switches) will cause the results indicated. For a listing of the available flash
patterns refer to Section 2: Flash Patterns.
ALT. 2X2X4 Mode (Default Configuration) . . .
Dip Switches
The dip switch configuration for UPS188C-mode is:
Dip Switch 1 - OFF Dip Switch 3 - OFF
Dip Switch 2 - OFF Dip Switch 8 - OFF
Control Wires
Control Wire #1 = Outlets 1 & 2 Enabled
Control Wire #2 = Outlets 3 & 4 Enabled
Control Wire #3 = 5, 6, 7 & 8 Enabled
SIM 2X2X4 Mode . . .
Dip Switches
The dip switch configuration for DOT-188C mode is:
Dip Switch 1 - ON Dip Switch 3 - OFF
Dip Switch 2 - OFF Dip Switch 8 - OFF
Control Wires
Control Wire #1 = Outlets 1 & 3 Enabled
Control Wire #2 = Outlets 5 & 7 Enabled
Control Wire #3 = 2, 4, 6 & 8 Enabled
SIM 2X2X4MN Mode . . .
Dip Switches
The dip switch configuration for DOT188MN Mode:
Dip Switch 1 - OFF Dip Switch 3 - OFF
Dip Switch 2 - ON Dip Switch 8 - OFF
Control Wires
Control Wire #1 = Outlets 2 & 4 Enabled
Control Wire #2 = Outlets 6 & 8 Enabled
Control Wire #3 = Outlets 1, 3, 5 & 7 Enabled
ALT 2X2X2X2 Mode . . .
Dip Switches
The dip switch configuration for ALT 2X2X2X2 Mode:
Dip Switch 1 - ON Dip Switch 3 - OFF
Dip Switch 2 - ON Dip Switch 8 - OFF
Control Wires
Control Wire #1 = Outlets 1 & 2 Enabled
Control Wire #2 = Outlets 3 & 4 Enabled
Control Wire #3 = Outlets 5 & 6 Enabled
Control Wire #4 = Outlets 7 & 8 Enabled
NOTE: If Hi/Lo is to be used turn on dip switch 6 and use the pattern 4 control wire.
SIM 2X2X2X2 Mode . . .
Dip Switches
The dip switch configuration for SIM 2X2X2X2 Mode:
Dip Switch 1 - OFF Dip Switch 3 - ON
Dip Switch 2 - OFF Dip Switch 8 - OFF
Control Wires
Control Wire #1 = Outlets 1 & 3 Enabled
Control Wire #2 = Outlets 2 & 4 Enabled
Control Wire #3 = Outlets 5 & 7 Enabled
Control Wire #4 = Outlets 6 & 8 Enabled
NOTE: If Hi/Lo is to be used turn on dip switch 6 and use the pattern 4 control wire.
BL188C Mode . . .
When the ISP148 is configured to emulate the BL188C, it is important to understand
that the connections and operational procedures used are quite different from any of
the other modes.
Dip Switches
BL188C emulation is accomplished by placing Dip Switch 8 in the ON position. At this
point, the remaining Dip Switches (1 thru 3) are used to configure the address of the
ISP148 for use in a B-LINK system. The addressing properties function as follows:
To Configure Address 1 To Configure Address 2
Dip Switch 1 - ON Dip Switch 1 - OFF
Dip Switch 2 - OFF Dip Switch 2 - ON
Dip Switch 3 - OFF Dip Switch 3 - OFF
To Configure Address 3
Dip Switch 1 - OFF
Dip Switch 2 - OFF
Dip Switch 3 - ON
Control Wires
In this configuration, control wires 1, 2, 3 & 4 are not used to enable outlets or control
Hi/Lo power activation, as with the previous modes. Outlet control and Hi/Lo power
activation is handled by the B-LINK Multi-Purpose Controller.
Section 2: Flash Patterns
The ISP148 can generate any of 16 available flash patterns simply activating the 4
Pattern Control wires, either individually or in combination. Table 1 on Page 3 outlines
all of the available patterns and the wire activations needed to produce them.
Section 3: Hi/Lo Power
Hi/Lo power activation and functionality can be configured in any of 4 available
modes, depending upon how Dip Switches 4 & 5 are positioned. Table 2 on Page 3
outlines each of the 4 configurations and their attributes.
NOTE: In BL188C emulation mode, Hi/Lo power activation is controlled with the B-
LINK Multi-Purpose Controller.
Section 4: Diagnostix™ (Optional)
The optional Diagnostix™ display allows the operator to confirm proper operation of
not only the 8 outlets on the ISP148, but of the strobe light and strobe cable
connected to these outlets as well. Each LED indicator on the Diagnostix™ display,
provides diagnostic information for one outlet. For example; LED #1 monitors Outlet
#1, etc. The LED’s appearance indicates the condition of it’s corresponding outlet.
Refer to Table 3 on Page 3.
Section 5: Phasing
When you turn dip switch 7 on, you will cause outlets 1-4 to drift slowly in and out of
sync with outlets 5-8. Lights will work as described in each mode. The result will be a
more eye catching or random flash pattern.
