Operating Basics
14
TSG 1001 Programmable TV Generator User Manual
9. Frame input — A 78
Ω
“BNO” connector for input of an external frame reset
signal. The external frame reset pulse must be accompanied by a clock pulse
present at the Clock input.
10. RS-232 (serial) communications port — A female DB25 connector for both
data transfer into RAM and serial remote control.
11. Parallel communications port — A male DB25 connector for fast parallel
downloads of test signal data into RAM.
12. Ground-closure remote control port — Allows the control of all front panel
operations through ground-closure remote control, typically with a user-built
interface.
13. H Drive output — A 75
Ω
BNC that can provide TTL-compatible (high or
low) output. Intended for the output of a high or low pulse at the horizontal
rate. The level of this output is determined by instructions in the signal-
source program. See the SDP1000 manual for more information.
14. V Drive output — A 75
Ω
BNC that can provide TTL-compatible (high or
low) output. Intended for the output of a high or low pulse at the vertical
(frame) rate. The level of this output is determined by instructions in the
signal-source program. See the SDP1000 manual for more information.
Downloading Test Signals Into RAM
A mixed-format signal set is loaded into RAM when the TSG 1001 is assembled.
This signal set is intended for test and demonstration purposes and should be
replaced with one of the single-format signal sets supplied as part of the
SDP1000 software, or with a signal or signal set created by the user. The
procedures involved in creating (or modifying) and downloading signals and
signal sets are detailed in the SDP1000 manual; the general techniques are
outlined below. Note that downloading new information into RAM will
over-write the previous contents of memory.
1. Install the SDP1000 software on an IBM-compatible PC running MS- or
PC-DOS 3.0 or higher.
2. Connect the PC to the TSG 1001 through either the parallel (recommended)
or serial port. Run COM1000, an SDP1000 utility, to set the communica-
tions parameters.
3. Run ED1000, the SDP1000 waveform editor. Open the appropriate
waveform equation file and display the waveform of interest, or create a new
waveform description.
4. When the desired waveform is displayed on the ED1000 screen, press the F3
key of the PC. The waveform will be sent to TSG RAM; when the download
Downloading a
Single Test Signal