Re: Sony/Tektronix 318 manual with full schematic
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| I have that manual, I cannot find half of A02 board.
The full symptoms are these: - 20ns clock?disappeared; - there are 4 selectable groups in the setup screen; - each group has 16 bits available for display; - only 2 pods can be selected for input (pod A and pod B), the rest are unavailable; - all tests pass, including acq and sram; - the pods are capturing external signals properly (checked them with the available calibration
output);
I have noticed that the instrument can be "used" without the?acquisition?board, albeit you can only browse the menus.
Excerpt from the manual:? "The chip select latch (A04U114) is used to enable each 8-bit pair of the acquisition memory and foridentifying instrument type. It is written by the MPU with the WRITE BS signal from the A03 ACQ Control board."
I have checked that circuit for continuity of traces and they are all ok. On the schematic there is a jumper wire called W118 which in the 338 is mounted and in the 318 is not mounted, checked that as well and it is not
mounted. |
--- On Tue, 3/12/13, sbirdasn wrote:
From: sbirdasn
Subject: [TekScopes] Re: Sony/Tektronix 318 manual with full schematic
To: TekScopes@...
Date: Tuesday, March 12, 2013, 4:41 AM
?
Try www.ebaman.com.
It contains a copy of the army version service manual, it is complete and a good scan.
You have to register to get access to the files, but it's free.
You will find it in the Test Equipment-> Tektronix-> Logic Analyzers section.
It's a direct copy from the original Tektronix service manual, complete with typographical errors, etc. that exist in the Tektronix service manual.
I'm curious as to the full symptoms of your 318 other than being unable to select 20nS clock rate.
I don't see how it could limit the clock sample rate, and not show some other indication that it thinks it's a 338, like incorrect setup menus such as the Setup menu being populated with 4 pods of signals (318 only populates Groups 1 & 2 w/ signal names for pods A & B, respectively). Or, not fail numerous tests of the hardware in respect to ACQ/Glitch capture SRAM. Either in the normal startup diagnostics, or any of the manual diagnostic tests.
Keep us posted on your progress.
Sbirdasn.
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