TM 11-6625-2980-14
To use this feature, place the DD 501 in the delay
interval mode of operation by moving the wire strap as
shown in Fig. 1-5 or changing connections, depending
on the DD 501 available. Connect the PG 508 and the
DD 501 as shown in Fig. 1-6. Use ten inch (Tektronix
Part Number 012-0208-00) or shorter cables for
interconnecting the two units to reduce delays.
Make certain the PG 508 TRIG/GATE IN input
impedance is set for 50 n. (See External Triggering and
Gating discussion and Fig. 1-2.) Set the controls of the
PG 508 for the desired output waveform with the PG
508 in FREE RUN. Do not use the SQ WAVE mode.
Place the PG 508 in the + SLOPE, SYNC GATE mode
and set the TRIG/GATE LEVEL control at the 2 o'clock
position. Select SLOPE, START + SLOPE
and place the EVENTS and START LEVEL controls at
the 2 o'clock position on the DD 501. The three TRIG'D
lights on the DD 501 and the TRIG'D/GATED light on
the PG 508 will be off until the DD 501 is triggered.
Upon receipt of a trigger, all lights will illuminate. If not,
check the setup and slightly adjust the LEVEL controls
as necessary.
Set the EVENTS DELAY COUNT on the DD
501 for one less than the desired number of counts up to
PG 508 repetition rates of about 20 MHz. See below for
further information. If necessary, a single trigger may be
obtained by rotating the DD 501 START LEVEL control
through the 0 position, with no external trigger applied. A
single trigger may also be obtained by using the
TEKTRONIX manual (One Shot) Trigger Generator,
Tektronix Part Number 016-0597-00. All other DD 501
and PG 508 operating controls function normally.
Due to propagation delays in the PG 508, DD 501
and the interconnecting cables, one or more pulses in
addition to the desired number are generated when the
PG 508 repetition rates are set between 20 MHz and 50
MHz. These extra pulses are consistent for any given
frequency irrespective of the desired EVENTS DELAY
COUNT setting. To determine the number of extra
pulses for a given PG 508 period, set the PG 508 and
the DD 501 controls as previously described. Now adjust
the PG 508 TRIG/GATE LEVEL or the DD 501 EVENTS
LEVEL for the same number of extra pulses at DD 501
EVENTS DELAY COUNT setting of zero and nine.
Fig . 1-7 . Typical propagation delays using PO 508 with DD 501 In counted burst mode at 50 MHz repetition rate .
1-7
Summary of Contents for PG 508
Page 44: ......
Page 51: ... BACKSIDE TRANSITION TIMING BOARD Α3 ...
Page 53: ...HIGH LOW LEVEL LEVEL Trigger Generator PG 508 ...
Page 56: ......
Page 61: ......
Page 62: ......
Page 63: ......
Page 64: ......
Page 65: ......
Page 66: ......
Page 67: ......
Page 68: ......
Page 69: ......
Page 70: ......
Page 71: ......
Page 72: ......
Page 73: ......
Page 74: ......
Page 75: ......
Page 76: ......
Page 77: ......
Page 78: ......
Page 79: ......
Page 87: ......
Page 88: ......
Page 93: ...M30603 Change Reference DESCRIP riON LEVEL CONTROL MULTIPLIER Partial ...
Page 100: ...TM 11 6625 2980 14 Figure 1 0 Pulse generator AN USM 359A vi ...
Page 145: ...TM 11 6625 2980 14 POWER MODULE INTERFACE PIN ASSIGNMENTS FRONT VIEW A 15 ...
Page 146: ...TM 11 6625 298014 DETAILED BLOCK DIAGRAM A 16 ...
Page 165: ...TM 11 6625 2980 14 FO 2 Block Diagram 4 3 4 4 blank ...
Page 166: ...TM 11 6625 2980 14 FO 3 Input circuit schematic diagram 4 5 4 6 blank ...
Page 167: ...TM 11 6625 2980 14 FO 4 Period generator schematic diagram 4 7 4 8 blank ...
Page 168: ...TM 11 6625 2980 14 FO 5 Delay generator schematic diagram 4 9 4 10 blank ...
Page 170: ...TM 11 6625 2980 14 FO 7 Transition time generator schematic diagram 4 13 4 14 blank ...
Page 171: ...TM 11 6625 2980 14 FO 8 Level control multiplier schematic diagram 4 15 4 16 blank ...
Page 172: ...TM 11 6625 2980 14 FO 9 Output amplifier schematic diagram 4 17 4 18 blank ...
Page 173: ...TM 11 6625 2980 14 FO 10 Tracking voltage supply schematic diagram 4 19 4 20 blank ...
Page 174: ...TM 11 6625 2980 14 FO 11 PG 508 power supply schematic diagram 4 21 4 22 blank ...
Page 175: ...TM 11 6625 2980 14 FO 12 TM 503 power supply schematic diagram 4 23 4 24 blank ...
Page 176: ...TM 11 6625 2980 14 FO 13 A2 board component locations 5 3 5 4 blank ...
Page 177: ...TM 11 6625 2980 14 FO 14 A3 board component locations 5 5 5 6 blank ...
Page 178: ...TM 11 6625 2980 14 FO 15 A4 board component locations 5 7 5 8 blank ...
Page 179: ...TM 11 6625 2980 14 FO 16 PG 508 exploded view 5 9 5 10 blank ...
Page 180: ...TM 11 6625 2980 14 A 17 A 18 blank ...
Page 181: ...TM 11 6625 2980 14 TM 503 POWER MODULE A 23 A 24 blank ...
Page 182: ......