TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? - UK Vintage Radio Repair and Restoration Discussion Forum

Chris55000 · 25th Feb 2020, 8:20 pm

Hi!

Just a quickie one!

Can anyone tell me what the differences between the TQ D1010/D1011 and the D1015/D1016 range of Oscilloscopes are?

I've downloaded both PDFs appertaining to this range, which both mention "D1011" in some of the drawings, and from what I can tell from the absolutely atrocious quality of both of these documents, the PCBs in both series of these instruments appear to be identical!

Chris Williams

MotorBikeLes · 25th Feb 2020, 9:50 pm

Chris, I think they are something like this. D1015/16 are 15Mhz Y bandwith. 1016 differs from 1015 by having a dedicated switched Y amp for XY displays, the two Y channels can be added (and possibly an invert to allow subtraction, not sure) and finally 1016 has a variable on the sweep speed.
Not sure about 1010/1011, but I would guess they are 10MHz bandwidth, with similar differences as with 1015/16.
Les.

Chris55000 · 25th Feb 2020, 10:22 pm

Hi!

AH!

Much obliged Les!

I have got an unbound (supposedly original!) D1015/D1016 manual coming, so if it turns out to have TQ's original blue/yellow PCB drawings I'll get them scanned & posted for everyone to use – this info will help D1010/D1011 owners as well!

Chris Williams

WME_bill · 26th Feb 2020, 7:25 pm

Telequipment D1010/11 and D1015/16 family of scopes.
MotorbikeLes's memory is as usual right.
The D1011/16 also have a X5 on either Y channel,as well as Add and invert Channel 2. 10Mhz or 15Mhz bandwidth.

There seem to have been undocumented changes to the circuits and boards.
In particular, they originally used a single 16 pin transistor array CA3083 in the TB. This was changed later to the 14 pin CA3046/ CA3086, as always used in the Y Amps, and the board layout amended.
The FET pairs used in the Y Amps and the TB were 8 pin DIP style Teledyne SU2603K, with one pin-out arrangement or the SU2603M with a different pin- out. The board can take either.
I have also seen the Siliconix U406, which is readily available and the unlisted Philips BFW1118, both in TO71 style cases.

The troublespot with these Scopes is the dinky little lever switches on the front panel. The plastic mouldings will fall to bits when you look at them. I and others have repaired them- do a search on the forum.

The tube was originally the Philips/Mullard D14-250. Used here and in Advance OS250 /255 and others.
It later appears in these and other scopes under contract numbers 58610, 58619, 56803, 56825, 56840 with presumably different phosphors, screen markings or alignment coil arrangements.
There was also the D14-251 low heater current and D14-252 quick heatup versions.
Very rapidly Philips seem to have introduced improved tubes, the D14-360 /361/ 362 family, but with different base connections.
There was clearly a big market for mono-accelerator tubes of this size and performance, as Brimar produced the almost identical D14-270 at the same time, and Toshiba the 150BT-P31, used in the early wave of Japanese servicing and school scopes.
wme_bill

MotorBikeLes · 26th Feb 2020, 9:37 pm

Not memory this time Bill. i have a 1015 manual. It tells you on the intro page. I was fairly sure the 1010 was a 10 meg.
You are right about those switches. I had a couple in for repair in the late '80's. When Tek announced all TQ parts were ending on a particular date, I ordered a few parts, and I decided to get some switches. 6 of one, ditto a second and a dozen of the more common one. Can't remember which now. Anyway, when I (tried) to move on from 'scopes etc, I sold them to a Pal in Northhampton.
When I got this 1015, i rang him, but they had all gone.
But I bought back a D67 transformer I had sold him.
Les.

25th Feb 2020, 8:20 pm	#1
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,868	TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? Hi! Just a quickie one! Can anyone tell me what the differences between the TQ D1010/D1011 and the D1015/D1016 range of Oscilloscopes are? I've downloaded both PDFs appertaining to this range, which both mention "D1011" in some of the drawings, and from what I can tell from the absolutely atrocious quality of both of these documents, the PCBs in both series of these instruments appear to be identical! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!

25th Feb 2020, 9:50 pm	#2
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,350	Re: TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? Chris, I think they are something like this. D1015/16 are 15Mhz Y bandwith. 1016 differs from 1015 by having a dedicated switched Y amp for XY displays, the two Y channels can be added (and possibly an invert to allow subtraction, not sure) and finally 1016 has a variable on the sweep speed. Not sure about 1010/1011, but I would guess they are 10MHz bandwidth, with similar differences as with 1015/16. Les.

25th Feb 2020, 10:22 pm	#3
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,868	Re: TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? Hi! AH! Much obliged Les! I have got an unbound (supposedly original!) D1015/D1016 manual coming, so if it turns out to have TQ's original blue/yellow PCB drawings I'll get them scanned & posted for everyone to use – this info will help D1010/D1011 owners as well! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!

26th Feb 2020, 7:25 pm	#4
WME_bill Octode Join Date: Oct 2007 Location: Exeter, Devon, UK. Posts: 1,554	Re: TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? Telequipment D1010/11 and D1015/16 family of scopes. MotorbikeLes's memory is as usual right. The D1011/16 also have a X5 on either Y channel,as well as Add and invert Channel 2. 10Mhz or 15Mhz bandwidth. There seem to have been undocumented changes to the circuits and boards. In particular, they originally used a single 16 pin transistor array CA3083 in the TB. This was changed later to the 14 pin CA3046/ CA3086, as always used in the Y Amps, and the board layout amended. The FET pairs used in the Y Amps and the TB were 8 pin DIP style Teledyne SU2603K, with one pin-out arrangement or the SU2603M with a different pin- out. The board can take either. I have also seen the Siliconix U406, which is readily available and the unlisted Philips BFW1118, both in TO71 style cases. The troublespot with these Scopes is the dinky little lever switches on the front panel. The plastic mouldings will fall to bits when you look at them. I and others have repaired them- do a search on the forum. The tube was originally the Philips/Mullard D14-250. Used here and in Advance OS250 /255 and others. It later appears in these and other scopes under contract numbers 58610, 58619, 56803, 56825, 56840 with presumably different phosphors, screen markings or alignment coil arrangements. There was also the D14-251 low heater current and D14-252 quick heatup versions. Very rapidly Philips seem to have introduced improved tubes, the D14-360 /361/ 362 family, but with different base connections. There was clearly a big market for mono-accelerator tubes of this size and performance, as Brimar produced the almost identical D14-270 at the same time, and Toshiba the 150BT-P31, used in the early wave of Japanese servicing and school scopes. wme_bill

26th Feb 2020, 9:37 pm	#5
MotorBikeLes Nonode Join Date: Dec 2012 Location: Kirk Michael, Isle of Man Posts: 2,350	Re: TQ D1010/D1011 & D1015/D1016 Oscilloscope Differences? Not memory this time Bill. i have a 1015 manual. It tells you on the intro page. I was fairly sure the 1010 was a 10 meg. You are right about those switches. I had a couple in for repair in the late '80's. When Tek announced all TQ parts were ending on a particular date, I ordered a few parts, and I decided to get some switches. 6 of one, ditto a second and a dozen of the more common one. Can't remember which now. Anyway, when I (tried) to move on from 'scopes etc, I sold them to a Pal in Northhampton. When I got this 1015, i rang him, but they had all gone. But I bought back a D67 transformer I had sold him. Les.