Owner manual

ABC 040104

2-3

2.3 SOURCE POWER REQUIREMENTS

This power supply operates from single phase a-c mains power over the specified voltage and

frequency ranges (Table 1-3) without any need for range selection.

2.4 COOLING

The power devices used within the power supply are maintained within their operating tempera-

ture range by means of internal heat sink assemblies cooled by convection. Periodic cleaning of

the power supply interior is recommended. If the power supply is located within a confined space,

care must be taken that the ambient temperature, which is the temperature of the air immediately

surrounding the power supply, does not rise above the specified limits (see Table 1-3).

2.5 PRELIMINARY OPERATIONAL CHECK

A simple operational check after unpacking and before equipment installation is advisable to

ascertain whether the power supply has suffered damage resulting from shipping.

Refer to Figures 2-1 and 2-3 for location of operating controls and electrical connections. Tables

3-1 and 3-2 explain the functions of operating controls/indicators and keypad keys, respectively.

1. With POWER switch set to off position, connect the power supply to source power.

2. With no load connected, set POWER switch to the ON position. Each time the unit is turned

on an internal self-test is performed. If the test is successful the indications of step 3 are vis-

ible.

3. The alphanumeric display (LCD) indicates the model and GPIB address. After approximately

2 seconds, the display changes to the power on default values: Local mode, Constant Volt-

age (CV) mode, 0.000V, 0.000A, output enabled, command entry status (see Figure 2-3).

Overcurrent and Overvoltage protection are set to the maximum values (Table 1-2), but are

not displayed.

TABLE 2-3. RS232C PORT INPUT/OUTPUT PIN ASSIGNMENTS

CONNECTOR PIN SIGNAL NAME FUNCTION

Adapter Cable (P/N KIT 219-0436)

PIN FUNCTION

RS 232

PORT

(connector A1J5)

1 RTN Return 1 Signal Ground

2 Not Used Not Used 2 Receive Data

3 TXD Transmit Data 3 Transmit Data

RXD Receive Data

Data Terminal Ready (protocol not

used)

5 RTN Return 5 Signal Ground

Not Used Not Used

Data Set Ready (protocol not

used)

RTN Return

Request To Send (protocol not

used)

8 RTN Return 8 Clear To Send (protocol not used)

9 Signal Ground