Common Control Equipment Installation
34
Adding DC Backup
To use 12 V
DC
as a backup to the AC supply
1. Measure the voltage at the BATT terminal (on the front of the supply) relative to
GND.
2. Measure the voltage at the +12V terminal.
3. Turn the 12V ADJ potentiometer clockwise until the +12V voltage is at least 0.2V
higher than the BATT voltage.
Table 6: Power Support Voltage Selection
Adjusting the Power Supply
The test points on the front of the unit are used to monitor the voltage levels. The +12V
DC
has been set at the factory for +13.5V
DC
. There is an adjustment potentiometer for this
setting. The
-
12V
DC
supply has no adjustment and should be -11.7 ± 0.5 V
DC
. The 5V
DC
test point reads the common voltage in a two-power-supply system. Use the following
adjustment procedure to verify the voltage being read is the supply being adjusted.
Single Power Supply
To adjust a system with one power supply
• Monitor the +5V
DC
test point and turn the ADJ potentiometer until the test point
reads 5.18V
DC
.
• Monitor the +12V
DC
test point and turn the ADJ potentiometer until the test point
reads 13.5V
DC
.
Input Supply
JP1
JP2
Universal AC
YES
NO
12 V
DC
only
NO
YES
AC and DC
YES
YES
Note
The 5V
DC
supply has been adjusted to your system at the factory,
but adding or removing cards changes the load and may require
you to adjust the 5V
DC
value.
Содержание 4000 Series
Страница 1: ...Series 4000 Communication Control System Installation and Configuration 025 9533Y...
Страница 6: ...6 025 9533Y...
Страница 28: ...Introduction 28 025 9533Y...
Страница 88: ...Common Control Equipment Installation 88 025 9533Y Figure 22 Console Duplex Wall Jacks...
Страница 110: ...Common Control Equipment Installation 110 025 9533Y...
Страница 172: ...Console Installation 172 025 9533Y...
Страница 192: ...Audio Level Adjustments 192 025 9533Y...
Страница 230: ...Accessory Installation 230 025 9533Y...
Страница 236: ...Console ANI Programming 236 025 9533Y...
Страница 339: ...339 RSMP Operation Figure 99 Main Screen...
Страница 350: ...Radio System Management Program 350 025 9533Y...
Страница 362: ...Appendix B Troubleshooting 362 025 9533Y...
Страница 417: ...417 Index wiring accessories 164 wall jack 86 wiring diagram for M4219 244 X XMT button labels 332 XP settings 247...
Страница 418: ...Index 418 025 9533Y...