Tektronix 11A16 Two-Channel Current Amplifier

The Tektronix 11A16 is a dual-channel current amplifier that extends the measurement capabilities of compatible Tektronix oscilloscopes. This plug-in module delivers high-sensitivity current analysis by operating with A6302 and A6303 current probes, automatically detecting probe type and scaling display values accordingly. The 11A16 enables precise current measurements across DC to 50 MHz bandwidth with the A6302, or DC to 15 MHz with the A6303, supporting deflection factors from 1 mA/Div to 2 A/Div. Each channel incorporates an M377 amplifier chip and features selectable AC, DC, or Off coupling, calibrated DC offset adjustment, polarity inversion, and probe degaussing capability.

– Technical Specifications

Bandwidth and Sensitivity
• DC to 50 MHz with A6302 Current Probe
• DC to 15 MHz with A6303 Current Probe
• Deflection factor (A6302): 1 mA/Div to 2 A/Div in 1-2-5 increments
• Deflection factor (A6303): 5 mA/Div to 10 A/Div in 1-2-5 increments
• Rise time: 7 ns or less
• Dynamic range: up to 10,000,000:1
• Input impedance: 50 Ω per channel

Noise Performance
• A6302 probe: 0.3 Div @ 1 mA/Div, 0.2 Div @ 2 mA/Div, 0.1 Div @ 5 mA/Div, 0.05 Div above
• A6303 probe: 0.3 Div @ 5 mA/Div, 0.2 Div @ 10 mA/Div, 0.1 Div @ 25 mA/Div, 0.05 Div above

Offset and Control
• Coarse DC offset: 0.25 divisions/increment
• Fine DC offset: 0.025 divisions/increment
• Selectable coupling: AC, DC, or Off
• Independent polarity inversion for display and trigger

– Key Features

• Two independent current amplification channels
• Automatic probe type detection and display scaling
• 12-pin Amphenol 165-12 input connectors per channel
• Probe degaussing feature
• Programmable via mainframe GPIB and RS-232 interfaces

– Compatibility & Integration

Designed for plug-in installation with Tektronix 11000-series, 11400-series, DSA 600, and select CSA Series mainframes. Not compatible with 11800 Series mainframes. Operates exclusively with A6302 and A6303 Current Probes. Physical dimensions: 8 × 6 × 4 inches; weight: 5 lbs.