Manufacturer: SIEMENS (GERMANY)
Model: Oscillar I/14, S#???
Vintage: 1956
Purpose: General Purpose
Condition: Working
Comments:
Here is another masterpiece by SIEMENS. The model name I/14 is clearly derived from the maximum bandwidth = 14MHz. This was surpassed only by the Tektronix 545 at that time. The only other major differences are that the 545 is DC coupled on the Y input, while the I/14 is AC coupled and requires a minimum of 1Hz. On the other hand the X input at the I/14 is DC coupled and has a bandwidth of 750kHz, compared to 240kHz of the 545.
But all these comparisons are academic, every year new records were achieved and the race in scope development was in full gear. It just shows that there were comparable scopes to Tektronix and they are easily overlooked with the dominance Tektronix had. It seems the late 1950s and early 1960s were the years when even companies like SIEMENS, AEG... gave in to the rising giant from Oregon.
There are some very interesting features with this scope...
- Very simple organization and location of operation knobs. I am sure it was not difficult to operate it in the darkness.
- There were a few accessories available to simplify graph examination. I am lucky to have the "Nachzeichnengeraet", which is a trace viewer with fine scale, see pictures below. Note that the bezel has receiving notches / hooks for these accessories.
Some other comments... I don't think the BNC connectors are original, they would have been UHF connectors. The CRT is a DG13-54 and you know it is a valuable scope because the Y amplifier section uses EL84s.
Model: Oscillar I/14, S#???
Vintage: 1956
Purpose: General Purpose
Condition: Working
Comments:
Here is another masterpiece by SIEMENS. The model name I/14 is clearly derived from the maximum bandwidth = 14MHz. This was surpassed only by the Tektronix 545 at that time. The only other major differences are that the 545 is DC coupled on the Y input, while the I/14 is AC coupled and requires a minimum of 1Hz. On the other hand the X input at the I/14 is DC coupled and has a bandwidth of 750kHz, compared to 240kHz of the 545.
But all these comparisons are academic, every year new records were achieved and the race in scope development was in full gear. It just shows that there were comparable scopes to Tektronix and they are easily overlooked with the dominance Tektronix had. It seems the late 1950s and early 1960s were the years when even companies like SIEMENS, AEG... gave in to the rising giant from Oregon.
There are some very interesting features with this scope...
- Very simple organization and location of operation knobs. I am sure it was not difficult to operate it in the darkness.
- There were a few accessories available to simplify graph examination. I am lucky to have the "Nachzeichnengeraet", which is a trace viewer with fine scale, see pictures below. Note that the bezel has receiving notches / hooks for these accessories.
Some other comments... I don't think the BNC connectors are original, they would have been UHF connectors. The CRT is a DG13-54 and you know it is a valuable scope because the Y amplifier section uses EL84s.
Documentation:
| siemens_oscillar_i-14_manual.pdf |