Agilent Technologies 664xA, 665xA, 667xA, 668xA, AGILENT Model 6653A: 3145A-00551, Model 6641A: 3217A-00111, Model 6645A: 3215A-00111, Model 6651A: 3130A-00171, Model 6652A: 3201A-00381, Model 6654A: 3148A-00391, Model 6655A: 3152A-00176, Model 6671A: 3129A-00218, Model 6672A: 3138A-00101, Model 6673A: 3138A-00101, Model 6674A: 3133A-00161, Model 6675A: 3138A-00101, Model 6680A: 3302A-00101, Model 6681A: 3250A-00101, Model 6682A: 3339A-00101, Model 6683A: 3339A-00161, Model 6684A: 3339A-00101

User Connections

1 = Voltage programming source 0 to -5 V

2 = Current programming source 0 to +5 V

3 = Current programming source 0 to -5 V

4 = Current programming source floating 0 to 5 V

* Maximum potential between -IP and ↓P or between +IP and ↓P is ±15 V

Figure 4-5g. Series 668xA Analog Programming Connections

Programming

Note from Figure 4-1 that you have three options for programming the current. You can use a voltage source that is positive,

negative, or floating with respect to Common P. Do not exceed +15 V with respect to Common P.

Make certain that the common connection for your voltage programming source is isolated from the load.

Failure to do this may cause damage to the power supply.

The effect of the analog programming source is always summed with the values programmed over the GPIB or from the front

panel. The voltage source can act alone only if you set the other program sources to zero. Keep the total programmed setting of

the supply (the analog input summed with the GPIB or front panel settings) at or under the output ratings specified in Table 1-3a.

Exceeding the output ratings will not damage the supply, but it may not be able to regulate its output the higher levels. If this

happens, the Unr annunciator will light to warn you that the output is unregulated.

Controller Connections

Figure 4-6 shows two basic ways of connecting your power supply to a controller. They are "linked" and "stand-alone

configurations.

Stand-Alone Connections

See Figure 4-6A. Each stand-alone power supply has its own GPIB bus address. Stand-alone power supplies may be

connected to the bus in series configuration, star configuration, or a combination of the two. You may connect from

1 to 15 stand-alone power supplies to a controller GPIB interface.

Linked Connections

See Figure 4-6B. Up to 16 power supplies may be used at a single GPIB primary bus address by making linked

connections. (You cannot use linked connections if you intend to program power supplies with the Compatibility

Language - see the power supply “Programming Guide".)