Configure Amps To Volts Ratio - Pacific UPC-32 Operation Manual

3.4.2 CONFIGURE AMPS TO VOLTS RATIO

NOTE: Most users will not need to concern themselves with the following configuration issue as it is set
at the factory if the UPC is packaged with a power source.
The ammeter scale is selected by the AMPS TO VOLTS RATIO SWITCH multiplied by a factor of 10.
The AMPS TO VOLTS RATIO scales the voltage fed into the ammeter circuit input to represent a given
amount of current. This switch may be set from 1 to 15, 10-150 or 100-500. If 5 is selected then the
amps to volts ratio is:
5 A (load current) = 1 V (input to ammeter circuit) = 5 A displayed.
In this case, the ammeter range is 50 A (5 x 10).
Set the AMPS TO VOLTS RATIO of the UPC to match the Power Source. Refer to the Power Source
Manual to determine the AMPS TO VOLTS RATIO of the Power Source model. The ratio is set by the
AMPS TO VOLTS RATIO SWITCH on the UPC METERING PCB (figure 3.4.1). The 4 LSB's of the Dip-
switch are binary weighted. See section 3.4.4 for information on configuration switch S2-7. Shown
below are sample settings. Note that not all allowable values are shown:
WEIGHT:
RATIO
NA
(DO NOT USE)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
20
50
100
200
400
NOTE: S2-7 MUST be set "ON" if the attached power source has only 2 power amplifiers.
S2-6 S2-5
X100 X10
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON OFF
DIP-SWITCH SETTING
S2-4 S2-3
8 4
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF ON
OFF ON
OFF ON
OFF ON
ON OFF
ON OFF
ON OFF
ON OFF
ON ON
ON ON
ON ON
ON ON
OFF OFF
OFF ON
OFF OFF
OFF OFF
OFF ON
25
SECTION 3 INSTALLATION
S2-2 S2-1
2 1
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
OFF OFF
OFF ON
ON OFF
ON ON
ON OFF
OFF ON
OFF ON
ON OFF
OFF OFF