7A19

The 7A19 is a one-channel vertical plug-in for 7000-series scopes.

{{{manufacturer}}} Vertical Amplifier
600 MHz amplifier 7A19 front view Compatible with [[7000-series scopes]] Produced from {{{introduced}}} to {{{discontinued}}} Manuals Tektronix 7A19 Manual (PDF) Tektronix 7A19 Manual (OCR, PDF) (All manuals in PDF format unless noted otherwise) [[Category:Introduced in {{{introduced}}}]]

Manuals – Specifications – Links – Pictures

An option (#4) was available that added a variable signal delay, intended to match timing between multiple channels.

The pre-charge setting on the input coupling switch is intended for situations where there might be residual charge on the input coupling capacitor that could overload the input. To use it, one sets the switch to PRE-CHG before connecting the inout signal, then waits two seconds before switching to AC (LF point is 1 kHz). The PRE-CHG setting also serves as a ×100 attenuator having a 5 kΩ input impedance in series with 2 μF, extending LF cutoff down to 20 Hz. In the AC GND position, the input is disconnected from the amplifier and terminated in a capacitively coupled 50 Ω load.

The 7A19 uses the 155-0068-00 amplifier IC.

Specifications

Key Specifications

Input impedance	50 Ω
Bandwidth	600 MHz (500 MHz in 7904)
Deflection	10 mV/Div to 1 V/Div, 1—2—5 sequence. Pre-charge circuit may be used as a calibrated ×100 attenuator.
Maximum input	2 W average or 50 Div, in AC mode 100 V DC+peak AC
Variable delay (Opt.4)	-0.5 ns to +0.5 ns

Pictures

7A19 without option
7A19 with Opt. 4 (Variable Delay).

Earlier model

Left side (early model with Weinschel attenuator)
Right side (early model with Weinschel attenuator)

Later model (B030000+)

Left side
Right side
Front right, Tek-built attenuator
Rear right
Front left
Front right
Top view
Attenuator switch contacts
Contacts detail
Contacts detail