INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-108-
Each Amplifier Module obtains its input signal from the Current Limit Board. These three input signals are identified aso/
A SIG,o/ B SIG ando/ C SIG. A 5.00 VRMS input signal will generate a full scale output voltage at the output of the AC
Power System and 100.0 VRMS on the primary of the output transformer.
Each Amplifier Module re300 DC, +15 VSW, and the +15 VSW1 supplies. The +300 VDC supply comes from
the Input Power Supply through a 15 amp fuse on the Power Mother Board.
The Amplifier Module has a thermoswitch mounted on its heatsink. If the heatsink temperature reaches 100
°
C, a
control signal is sent to the Oscillator Module. A logic low on the
OVER TMP
control line will cause the error message
TEMP FAULT to be generated.
5.9 OSCILLATOR
MODULE
The Oscillator Module is identified with the reference designator, A11. The module consists of three printed circuit
assemblies. These three assemblies are interconnected with a small mother board, A11A2. The oscillator Display
Assembly connects to the Oscillator Module with a short ribbon cable. The Display Assembly is mounted on the front
panel. The block diagram of the Oscillator Module is shown in Figure 5-2.
Figure 5-2
OSCILLATOR MODULE BLOCK DIAGRAM
5.10 CPU/GPIB
BOARD
The CPU/GPIB board, A11A3, provides the control and measurement functions of the module. A microprocessor
circuit accepts commands from the GPIB on the front panel keyboard. It sends digital programming information to set
Summary of Contents for 2750L-P Series
Page 119: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 115 Figure 6 1 MODULE LOCATION...
Page 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
Page 148: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 144 FIGURE 2...
