Specifications

Chapter 2 Service
Troubleshooting the Counter
Assembly-Level Service Guide 153
Table 2-6 below lists the power supply voltages and their tolerances.
4 If the +15 V is bad or missing, replace the AC Power Supply (p/n
0950-2496).
5 If the +3.3 V or +5 V are bad or missing, the GPIB will likely fail.
6 If the +15 V is present, but one or more of the other voltages are
incorrect or missing, replace the motherboard.
7 After verifying the correct voltages, perform the counter Self-Test
as described on page 159.
Checking the Battery and Battery Charger
The Option 300 Internal DC Battery is a Lithium-Ion battery that, when
fully charged, provides +12 VDC voltage to the motherboard for normal
operation. When fully charged, the internal DC battery can power the
counter for approximately 3 hours with external AC power removed.
Table 2-6. DC Power Supply Voltages
Test Point Voltage Tolerance
T1000 +3.30 V ±0.250 V
T1001 +3.30V ±0.250 V
T1002 +5.00 V ______
T1003 +5.00 V ______
T1004 +2.50 V ±0.6 V
T1005 +1.20 V ______
T1006 -5.00 V ±1.2 V
T1007 +10.0 V --------
J1000 (pins 1,2) +15.0 V --------