021-0374-00

Tektronix 021-0374-00 GPIB Decoder
GPIB Interface 021-0374-00 front Compatible with 7000-series scopes Produced from 1986 to (?) Manuals Tektronix 021-0374-00 Manual (All manuals in PDF format unless noted otherwise)

Manuals – Specifications – Links – Pictures

The Tektronix 021-0374-00 GPIB Decoder is a 7000-series plug-in designed to allow GPIB control of 7A16P or 7A29P programmable amplifiers and/or a 7B90P programmable time base module in a 7854 mainframe. (The manual warns that of all 7000 series mainframes, only the 7854 has adequate +5 V supply capacity.)

The -P type plugins were originally designed for the 7000 series digitizers like the 7912AD that have a built-in GPIB interface.

The 021-0374-00 replicates the functions of that interface, receiving commands from GPIB and translating them to the internal serial format expected by the plugins. It is based on a Motorola 6802 microcontroller and a TMS9914 GPIB interface chip.

The interface must be installed in the left horizontal (A timebase) bay. It addresses left vertical, right vertical and right horizontal plugins through GPIB sub-addresses 1, 2 and 3, respectively. Data connections from the 021-0374-00 the plugins require flat cables because the relevant bus lines are n/c on the 7854 backplane.

Links

021-0374-00 @ amplifier.cd

Pictures

Front view of an early GPIB Decoder
Front view of a late GPIB Decoder
GPIB Decoder with 7A16P & 7B90P in a 7854
Left side
Closeup of left side
Right side
Closeup of right side
Rear view of the front panel
Angeled view

Mounting Procedure

Location of electrical components

A late version of the 7A16P plugin is needed
Location of the connectors for the GPIB decoder on a 7A16P
Right side of a 7A29P plugin
Location of the connectors for the GPIB decoder on a 7A29P
A late version of the 7B90P plugin is needed
Location of the connectors for the GPIB decoder on a 7B90P
Location of the zener diode V330 on a late 7B90P
Location of the connectors to the plugins on the GPIB decoder

Mechanical components

Bracket for mounting the programmable plugins to the decoder
Bracket for mounting the programmable plugins to the decoder
Bracket for mounting the programmable plugins to the decoder
Bracket for mounting the programmable plugins to the decoder

Firmware (uploaded BIN files)

Part number	Location	Used in
160-3533-00.bin (?)	U4060	up to #B010190
160-3533-01.bin (?)	U4060	#B010191 and newer

Components

Some Parts Used in the 021-0374-00

Part	Part Number(s)	Class	Description	Used in
Motorola 6800	156-0426-00 • 156-2413-00 • 156-5472-01	Monolithic integrated circuit	8-bit microprocessor	021-0206-00 • 021-0374-00 • 067-0902-00 • 067-1137-99 • 222 • 222A • 222PS • 2424L • 2445 • 2465 • 2467 • 4051 • 7250 • 7912 • 7912AD • 7A16P • 7A29P • 7B81P • 7B90P • 833 • 834 • 835 • 836 • CG5001 • CG551AP • CG5010 • CG5011 • DF1 • DF2 • DM5010 • FG5010 • MI5010 • SI5010 • PS5004 • PS5010 • SG5010 • Keithley 181 • Keithley 182 • Keithley 175 • Keithley 175A • Keithley 191 • Keithley 192 • Keithley 195 • Keithley 195A • Keithley 197 • Keithley 220 • Keithley 224 • Keithley 230 • Keithley 263 • Keithley 485 • Keithley 580 • Keithley 617
TMS9914	156-1444-00 • 156-1444-01	Monolithic integrated circuit	GPIB controller	11301 • 11301A • 11302 • 11302A • 2221 • 2230 • 2424L • 2440 • 4052A • 4054A • 021-0374-00 • 067-1137-99 • AM700 • DC5009 • DC5010 • DM5010 • DM5110 • DM5120 • DM5520 • FG5010 • MI5010 • SG5010 • SG5030 • SI5010 • PS5004 • PS5010 • Keithley 182 • Keithley 193A • Keithley 195 • Keithley 195A • Keithley 196 • Keithley 197 • Keithley 199 • Keithley 220 • Keithley 224 • Keithley 230 • Keithley 263 • Keithley 617