5
Constant Resistance Mode (CR)
Ω
Ω
Ω
Ω
±0·5% ± 2 digits ± 30 mA.
< 2% for 90% load power change (V > 2 Volts, using remote sense).
< (±0·04% ± 5 mA ) per ºC.
(2)
Slew Rate Ranges:
10 Ω range: 1 Ω per s to 100 Ω per ms.
Ω
Ω
Ω
(3)
Constant Conductance Mode (CG)
Conductance Ranges: <0·01 to 1 A/V (1 mA/V resolution)
and <0·2 to 40 A/V (0·01 A/V resolution).
± 0·5% ± 2 digits ± 30 mA.
< 2% for 90% load power change (V > 2 Volts, using remote sense).
< (±0·04% ± 5 mA) per ºC.
(2)
Slew Rate Ranges:
1 A/V range: 0·1 A/V per s to >10 A/V per ms.
40 A/V range: 4 A/V per s to >400 A/V per ms.
(3)
Minimum transition time:
Constant Voltage Mode (CV)
Voltage Ranges:
V
min
to 8 V (1 mV resolution) and V
min
to 80 V (10 mV resolution).
V
min
depends on current: typically <100mV at 4A to <2V at 80A.
< 30 mV for 90% load power change (using external sense).
(2)
Slew Rate Ranges:
8 V range: 0·8 V per s to 80 V per ms.
80 V range: 8 V per s to 800 V per ms.
(3)
Minimum transition time:
150 µs.
TRANSIENT CONTROL
Transient Generator
Adjustable from 0·01Hz (100 seconds) to 10kHz.
1% to 99% (percentage of period at Level A).
Slew Rate Control
The slew rate control applies to all changes of level whether caused by manual selection, remote
control or the transient generator.
The level change is a linear slew between the two level settings. The range available in each
mode is shown above.
± 10% (on linear part of slope, excluding high frequency aberrations).
Variation in Level Settings:
± 5 digits of specified setting resolution for present mode and range.
Oscillator Sync Output
Connection: Terminal block on rear panel. Opto-isolated open collector output
conducts during Level B phase of internal transient generator.
Max. off-state Voltage: 30V. On-state sink current: 2mA (typical).