Agilent 60501B Operations Guide

OPERATING MANUAL

150 WATT ELECTRONIC LOAD MODULE

Agilent Model 60501B

FOR MODULES WITH SERIAL NUMBERS:

3118A-00101 AND ABOVE

Agilent Part No. 60501-90009 Printed in U.S.A.
Microfiche No. 60501-90010 June, 1991

DECLARATION OF CONFORMITY

according to ISO/IEC Guide 22 and EN 45014

Manufacturer’s Name: Agilent Technologies
Manufacturer’s Address: New Jersey Division

140 Green Pond Road
Rockaway, NJ 07866 U.S.A.

declares that the product

Product Name: Load mainframe and modules
Model Number(s): Agilent 6050A, 6051A mainframes with modules

Agilent 60501A/B, 60502A/B, 60503A/B, 60504A/B, 60507A/B

conform(s) to the following Product Specifications:

Safety: IEC 348:1978 / HD401 S1:1981

1

EMC: CISPR 11:1990 / EN 55011:1991 - Group 1, Class B

IEC 801-2:1991 / EN 50082-1:1992 - 4kV CD, 8 kV AD
IEC 801-3:1984 / EN 50082-1:1992 - 3 V/m
IEC 801-4:1988 / EN 50082-1:1992 - 0.5 kV Sig. Lines, 1 kV

Power Lines

Supplementary Information:

The product herewith complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC
Directive 89/336/EEC and carries the CE-marking accordingly.

Note 1: The product family was introduced prior to 12/93

New Jersey January 1997
Location Date Bruce Krueger / Quality Manager

European Contact: Your local Agilent Technologies Sales and Service Office or Agi l ent Technologies GmbH,
Department TRE, Herrenberger Strasse 130, D-71034 Boeblingen (FAX:[phone])

150-Watt Module

About This Manual

This manual provides information for the Agilent 60501B 150-Watt Electronic Load Module. It is designed as a
supplement to the Agilent 6050A/6051A Multiple Input Mainframe Electronic Load Operating Manual (part number 06050-

90001). Four tables provide the following module-specific information:

Table 60501-1 lists both the specifications and supplemental characteristics of the module. Specifications indicate
warranted performance in the 25 °C ± 5 °C region of the total temperature range (0 to 55° C). Supplemental characteristics

indicate non-warranted, typical performance and are intended to provide additional information by describing performance
that has been determined by design or type testing.

Table 60501-2 lists the ranges that can be programmed in constant current, constant resistance, and constant voltage modes.
It shows the maximum and minimum programming values for each range. Refer to this table when programming the
module locally as described in Chapter 4, or remotely as described in Chapter 5 of the operating manual.

Table 60501-3 gives the factory default values of the module. Unless you have saved your own wake-up settings, the
module will be set to the factory default values whenever power is applied. See Chapter 4 in the ope rating manual.

Table 60501-4 provides calibration information for the module. This information is needed to perform the annual
calibration procedure described in Chapter 6 of the operating manual.

Module Installation and Operation

Except for the module-specific information in this manual, all installation, operation, and calibration instructions are given
in the Mainframe Operating Manual. The Agilent Electronic Load Family Programming Reference Manual (part number
06060-90005) contains complete programming details that apply to all Electronic Load models.

Note: The following information in Chapter 2 of the Mainframe Operating Manual does not apply to electronic

load modules with the serial numbers listed on the title page of this manual: The section titled "Extended
Power Operation", and the section titled "Extended Power Limit". Also for these modules, change the 3­second delay referred to under "Nominal Power Limit" to 50 milliseconds.

Items Supplied

In addition to this manual, a 10-pin connector plug is also shipped with your Electronic Load module. Refer to Chapter 3 in
the operating manual for more information.

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Table 60501-1. Specification and Supplemental Characteristics

SPECIFICATIONS

DC Input Rating:

Current: 0 to 30 A
Voltage: 3 to 60 V (minimum dc operation from 0 to 2 V for 0 to 30 A)
Power: 150 W at 40 °C (derated to 112 W at 55 °C)

A. OPERATING CHARACTERISTICS B. DERATED CURRENT DETAIL

Constant Current Mode:

Ranges: 0 to 3 A; and 0 to 30 A
Accuracy: (after 30 second wait): ± 0.1% ± 40 mA (both ranges)
Resolution: 0.8 mA (3 A range); 8 mA (30 A range)
Regulation: 10 mA (both ranges)
Temperature Coefficient: 100 ppm/°C ± 3 mA/°C (both ranges)

Constant Resistance Mode:

Ranges: 0.067 to 2 Ω; 2 Ω to 2 kΩ; and 20 Ω to 10 k
Accuracy: ± 0.8% ± 16 mΩ with ≥ 6 A at input (2 Ω range);

Resolution: 0.54 mΩ (2 Ω range); 0.14 mS (2 kΩ range); 0.014 mS (10 kΩ range)
Regulation: 10 mV with remote sensing (2 Ω range); 10 mA (2 k and 10 kΩ ranges)
Temperature Coefficient: 800 ppm/°C ± 0.8 mΩ/°C (2 Ω range);

Constant Voltage Mode:

Range: 0 to 60 V
Accuracy: ± 0.1% ± 50 mV
Resolution: 16 mV
Regulation: 5 mV (remote sense); 40 mV (local sense)
Temperature Coefficient: 100 ppm/°C ± 5 mV/°C

Ω

± 0.3% ± 5 mS with ≥ 6 V at input (2 k and 10 kΩ ranges)

300ppm/°C ± 0.5 mS/°C (2 k and 10 kΩ ranges)

2

Table 60501-1 Specifications and Supplemental Characteristics (continued)

Transient Operation:

Continuous Mode

Frequency Range: 0.25 Hz to 10 kHz
Frequency Resolution: 4%
Frequency Accuracy: 3%
Duty Cycle Range: 3% to 97% (0.25 Hz to 1 kHz); 6% to 94% (1 kHz to 10 kHz)
Duty Cycle Resolution: 4%
Duty Cycle Accuracy: 6% of setting ± 2%

Pulsed Mode
Pulse Width: 50

Transient Current Level (0 to 3 A and 0 to 30 A ranges):

Resolution: 13 mA (3 A range); 130 mA (30 A range)
Accuracy: ± 0.1% ± 40 mA (3 A range); ± 0.1% ± 200 mA (30 A range)
Temperature Coefficient: 100 ppm/°C ± 5 mA/°C

Transient Resistance Level (0.067 to 2 Ω, 2 Ω to 2 kΩ, and 20 Ω to 10 kΩ ranges):

µ

s ± 3% minimum; 4 s ± 3% max imum

Resolution: 8.6 mΩ (2 Ω range); 2.1 mS (2 kΩ range); 0.2 mS (10 kΩ range)
Accuracy: ± 0.8% + 16 mΩ with > 3 A at input (2 Ω range)

Transient Voltage Level (0 to 60 V):

Resolution: 260 mV
Accuracy: ± 0.1% ± 300 mV
Temperature Coefficient: 150 ppm/°C ± 5 mV/°C

Current Readback:

Resolution: 9 mA (via GPIB); 10 mA (front panel)
Accuracy: (after 30 minute wait): ± 0.06% ± 40 mA
Temperature Coefficient: 65 ppm/

Voltage Readback:

Resolution: 17 mV (via GPIB); 20 mV (front panel)
Accuracy: ± 0.05% ± 45 mV
Temperature Coefficient: 50 ppm/°C ± 1.2 mV/°C
Maximum Readback Capability: 65 to 70 V (typical)

± 0. 3% + 5 mS with ≥ 6 V at input (2 kΩ range)
± 0.3% + 5 mS with ≥ 6 V at input (10 kΩ range)

°

C ± 3 mA/ °C

Power Readback:

Accuracy: ±0.2% ± 2 W

3

Table 60501-1 Specifications and Supplemental Characteristics (continued)

External Analog Programming 0 to 10 V (dc or ac):

Bandwidth: 10 kHz (3 db frequency)
Accuracy: ± 4.5% ± 40 mA (0 to 3 A range)

± 4.5% ± 130 mA (0 to 30 A range)
± 0.8% ± 200 mV (0 to 60 V range)

Temperature Coefficient: 100 ppm/°C ± 3 mA/°C (current ranges)

100 ppm/°C ± 1 mV/°C (voltage range)

External Current Monitor (0 to 10 V):

Accuracy: ± 4% ± 40 mA (referenced to analog common)
Temperature Coefficient: 60 ppm/°C ± 3 mA/°C

External Voltage Monitor (0 to 10 V):

Accuracy: ± 0.25% ± 40 mV (referenced to analog common)
Temperature Coefficient: 50 ppm/

Remote Sensing: 5 Vdc maximum between sense and input binding posts

Maximum Input Levels:

Current: 30.6 A (programmable to lower limits)
Voltage: 75 V

°

C ± 0.2 mV/ °C

Minimum Operating Voltage: 2 V (derated to 0 V at 0 A)
PARD (20 Hz to 10 MHz noise):

Current: 2 mA rms/20 mA p-p
Voltage: 5 mV rms

DC Isolation Voltage: ± 240 Vdc between + or - input binding post and chassis ground

Digital Inputs:

Vlo: 0.9 V maximum at Ilo = -1 mA
Vhi 3.15 V minimum (pull-up resistor on input)

Digital Outputs:

Vlo: 0.72 V maximum a t Ilo = 1 mA
Vhi: 4.4 V minimum at Ilo - 20 µA

SUPPLEMENTAL CHARACTERISTICS

Programmable Slew Rate (For any given input transition, the time required will be either the total slew time or a minimum
transition time, whichever is longer. The minimum transition time increases when operating with input currents under 1 A.
The following are typical values; ±25% tolerance):

4

Table 60501-1 Specifications and Supplemental Characteristics (continued)

Current Slew Rate:*

Rate # 30 A Range Step 3 A Range Step Transition Time

1 0.5 A/ms 0.05 A/s 8.0 ms
2 1.2 A/ms 0.12 A/s 3.2 ms
3 2.5 A/ms 0.25 A/ms 1.6 ms
4 5 A/ms 0.5 A/ms

5 12 A/ms 1.2 A/ms
6 25 A/ms 2.5 A/ms
7
8

9
10
11
12

Voltage Slew Rate:

Rate # Voltage Range Step Transition Time*

1 1 V/ms 8.0 ms

2 2.5 V/ms 3.2 ms

3 5 V/ms 1.6 ms

4 10 V/ms

5 25 V/ms

6 50 V/ms

7

8

9

0.05 A/µs

0.12 A/µs

0.25 A/µs

0.5 A/µs 0.05 A/µs 12 µs

1.2 A/µs 0.12 A/µs 12 µs

2.5 A/µs 0.25 A/µs 12 µs
*AC performance specified from 3 to 60 V.

0.1 V/µs 85 µs

0.25 V/µs 85 µS

0.5 V/µs 85 µS

*Transition time based on low capacitance current source.

5 A/ms
12 A/ms
25 A/ms

800 µs
320 µs
160 µs

800 µs
320 µs
160 µs
80 µs
32 µs
16 µs

Resistance Slew Rate (2 Ω range): Uses the value programmed for voltage slew rate.

Resistance Slew Rate (2 k and 10 kΩ ranges): Uses the value programmed for current slew rate.

Transient Current Overshoot (When programmed from 0A):

Range Transient Current Level Current Slew Rate Overshoot*

30 A 3-30 A All slew rates 0

1.5 A

1.5 A

3 A 3 A All slew rates 0

1.5 A

1.5 A

*Overshoot may be higher during first five seconds of pro gramming if unit has been operating at full current. Overshoot
values assume a total inductance of lµH, or less, in the load leads connected to the D.U.T.

0.5 A/µs to 2.5 A/µs

0.5 A/ms to 0.25 A/µs

0.13 A/µs and 0.25 A/µs

0.05 A/ms and 0.05 A/µs

5

6%

0

3%

0

Table 60501-1 Specifications and Supplemental Characteristics (continued)

Source Turn-On Current Overshoot: Less than 10% of final value (in CC and CR modes when connected to power

supplies with voltage rise times of greater than 500µs).

Programmable Short Circuit: 0.066 Ω (0.04 Ω typical)

Programmable Open Circuit: 20 kΩ (typical)

Drift Stability (over an 8 hour interval):

Current: ± 0.03% ± 5 mA
Voltage: ± 0.01% ± 10 mV

Reverse Current Capacity: 50 A when unit is on; 20 A when unit is off

Weight: 3.2 kg (7 lbs.)

Table 60501-2. Programming Ranges

Function Front Panel Front Panel HPSL Command Range of Values

Key Display (Short Form)

Constant Current

Set Range C:RNG value "CURR:RANG value"
Low Range
High Range
Set Main Level CURR value "CURR value"
Low Range 0 to 3 A

High Range 0 to 30 A
Set Slew Rate

Low Range
High Range
Set Transient Level C:TLV value "CURR:TLEV value" same as main level
*Set Triggered Leve l "CURR:TRIG value " same as main level

Constant Resistance

Set Range R:RNG value "RES:RANG value"
Low Range
Middle Range
High Range
Set Main Level RES value "RES value"
Low Range
Middle Range
High Range
Set Slew Rate
Low Range V:SLW value "VOLT:SLEW value" same as voltage slew

Middle/High Range C:SLW value "CURR:SLEW value" same as c urrent slew
Set Transient Level R:TLV value " RES:TLEV value" same as main level

*Set Triggered Leve l "RES:TRIG value" same as main level

Constant Voltage

Set Main Level VOLT value "VOLT value" 0 to 60 V
Set Slew Rate
Set Transient Level V:TLV value "VOLT:TLEV value" same as main level
*Set Triggered Level "VOLT:TRIG value" same as main level

(shift)

(shift)

(shift)

C:SLW value "CURR:SLEW value"

V:SLW value "VOLT:SLEW value"

≥

0 and ≤ 3 A

> 3 A and ≤ 30 A

0.00005 to 0.25 (A/µs)

0.0005 to 2.5 (A/µs)

≥

0 and ≤ 2
> 2 Ω and ≤ 2 k
>2 kΩ and ≤ 10 k

0 to 2
2 Ω to 2 k
20 Ω to 10 k

0.001 to 0.5 (V/µs)

Ω

Ω

Ω

Ω

Ω

Ω

6

Table 60501-2. Programming Ranges (continued)

Transient Operation

Set Frequency FREQ value "TRAN:FREQ value" 0.25 Hz to 10 kHz
Set Duty Cycle

*Set Pulse Width "TRAN:TWID value" 0.00005 to 4 s

Trigger Operation

*Set Trigger Period "TRIG:TIM value" 0.000008 to 4 s

Current Protection

*Set Current Level "CURR:PROT value" 0 to 30.6 A
*Set Delay Time "CURR:PROT:DEL value" 0 to 60 s

Function Settings Function Setting

CURR level 0 A Mode (CC, CR, CV) CC
CURR transient level 0 A Input (on/off) on
*CURR slew rate

CURR range 30 A

*CURR protection (on/off) off ***TRAN mode continuous
**CURR protection level 30.6 A (continuous, pulse, toggle)
**CURR protection delay 15 s T RAN frequency 1 kHz

RES level
RES transient level
RES range

VOLT level 60 V **TRIG period 0.001 s
VOLT transient level 60 V **PORT0 output (on/off) off (logic 0)
VOLT slew rate

The *RST command resets the CURR slew rate to 2.5 A/µ, not to the factory default.

(shift)

*Can only be programmed remotely via the GPIB.

DCYCLE value "TRAN:DCYC value" 3-97% (0.25 Hz-1 kHz)

6-94% (1 kHz-10 kHz)

Table 60501-3. Factory Default Settings

0.5 A/µs

Ω

2 k

Ω

2 k

Ω

2 k

5 V/µs

Short (on/off) off

Transient operation (on/off) off

TRAN duty cycle 50%
**TRAN pulse width 0.5 ms

**TRIG source hold
(bus, external, hold, timer, line)

**CAL mode (on/off) off

**Can only be programmed remotely via the GPIB.
***Cont inuous transient mode is the only mode available at the front p anel . Pulsed , toggled, and continu ous modes can
all be programmed remotely via the GPIB.

7

Table 60501-4. Calibration Information
Ranges and
Calibration Points

High Current Range Hi_curr_rng 30 5 V/31 A 100 A
High Current Offset Hi_curr_offset 0.013
Low Current Range Lo_curr_rng 3 5 V/10 A 15 A
Low Current Offset Lo_curr_offset 0.013
Voltage Range N/A N/A 61 V/2 A N/A
Voltage Hi point Volt_hipt 60
Voltage Lo point Volt_lopt 2.7
Low Resistance Range Lo_res_rng 2 15 V/5.5 A 15 A
Low Resistance Hi point Lo_res_hipt 1.9
Low Resistance Lo point Lo_res_lopt 0.067
Middle Resistance Range Mid_res_rng 20 10.9 V/8 A 15 A
Middle Resistance Hi point Mid_res_hipt 60
Middle Resistance Lo point Mid_res_lopt 2.1
High Resistance Range Hi_res_rng 2002 60 V/5 A 15 A
High Resistance Hi point Hi_res_hipt 200
High Resistance Lo point Hi_res_lopt 24

Variables Variables

Value

Power Supply

Settings

Current

Shunt

8

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